Parts for White Outdoor 137-656-190 / 1987: Rear Drive Assembly Parts

This part is a hex cap screw that is used on a variety of outdoor power equipment. A hex cap screw is used to fasten components together securely. The head of the screw is shaped like a hexagon, hence the name "hex cap screw."A new hex cap screw may be needed if the current one is stripped, broken, or missing. Since screws are such a small component, it is important to place them in a safe place so that they are not lost. Remember to wear gloves when operating or performing care and maintenance on any outdoor power equipment.This hex cap screw is a genuine Husqvarna part. It is sold individually. This particular hex cap screw is compatible with chippers, shredders, lawnmowers, lawn tractors, snowblowers, and vacuums that are manufactured by the following brands: Husqvarna, Craftsman, Bolens, Husky, Yard Machines, Yard-Man, MTD, and Troy-Bilt.

This lock washer is used frequently for a number of applications on power yard equipment. The size, 5/16, is the default for many small engine housing and manifold applications. Lock washers are used with machined bolts to fasten engine blocks to the housing of the equipment being used. The compressed washer is able to handle the constant vibration of the small gasoline engine without losing the seal between the screw or bolt and the housing. Typically these lock washers only need to be replaced when they are misplaced during repairs or when the screws that attach them have to be chiseled or cut away, meaning the washers are destroyed as well. These OEM certified replacement washers have been manufactured to the same specifications as the originals they are replacing. In addition to lawn mowers, lock washers of this type and size are frequently used on blowers, lawn tractors, cultivators, snowblowers, and trimmers. Brands compatible with this type of washer are Murray, Husky, Poulan, Bolens, Yard-Man, Cub Cadet, Troy-Bilt, Yard Machines, MTD, and Ryobi.

This bell washer is a genuine MTD part, sold individually. This bell washer can be used as a replacement part for a lawn tractor, chipper shredder, tiller, or lawnmower. This bell washer adds spacing on a shaft in the tool.If the user of the appliance notices that a washer is missing, it should be replaced. General wear and tear is very normal for outdoor appliances, and if it occurs, the washer should be removed and replaced with this genuine OEM replacement part.This is an OEM part sourced directly from the manufacturer. It is sold individually. This bell washer is compatible with the following outdoor appliance brands: MTD, Yard Man, Yard Machines, and Troy-Bilt.

This square key is a genuine MTD part, sold individually. This square key can be used as a replacement part in lawnmowers, snowblowers, tillers, leaf blowers, edgers, log splitters, and wood chippers. The purpose of the square key for one of these small engine outdoor appliances is to fit tightly into the gears, cams, sprockets, and pulleys within the general internal machinery of the appliances to keep the parts affixed to the shaft.The square key in a small engine outdoor appliance might have to be replaced if the square key is lost or misplaced, as it is a small component that can easily go missing without announcing its absence. The square key can also be damaged from general wear and tear over long-term use, meriting its replacement by this genuine OEM replacement part.This component is a genuine OEM replacement part sourced directly from the manufacturer. It is sold individually. This square key is compatible with the following outdoor appliance brands: MTD, Craftsman, Cub Cadet, Yard Machines, Huskee, Montgomery Wards, Yard-Man, Turf King, and MasterCut.

The variable speed belt goes around the engine pulley and the variable speed pulley. It is used on machines that have variable speed pulley drives and that need to be able to operate at different speeds. hese belts will wear down over time and need to be replaced. If the belt breaks, stretches too much or is worn down, replace it with a v-belt that fits properly. A screwdriver, pliers, socket set, and a wrench set will be needed to replace the belt. This is a genuine OEM part for lawn tractors, as well as other types of equipment with variable speeds, such as a snowblower, tiller, wood chipper, or log splitter. It is sold individually, and it will work on lawn tractors from many brands, including Ryobi, MTD, Craftsman, Yard Machines, Yard-Man, Turf King, and Mastercut.

This replacement part is a flanged bearing. This is a genuine replacement part made by MTD. A flanged bearing is similar to a regular bearing but it contains an extension around the outer lip to allow for an easier mounting in the needed position. A new flanged bearing might be needed if the current one is missing or damaged in any way. This can be caused by wear and tear after years of normal use. Bearings often experience friction over time. This can cause the part to become worn down. When this happens, be sure to replace this part as soon as possible. Refer to the specific user manual before attempting to replace this part. This part is sold individually and is sourced directly from the manufacturer to ensure proper fit. This part is a genuine OEM replacement part made for long-lasting use.

This hex nut is designed for use with select trimmers and mowers. It is a standard hardware part that may have multiple applications depending on the type of unit and model. The nut is typically used to secure engine components or housing elements to provide safe use of the machine. These nuts are durable, but they are small and can become lost during other repairs. The constant exposure to vibrations and use can also cause them to strip or become damaged over time. Either way, a replacement with this genuine hex nut will resolve the issue and get equipment back in working order. This genuine OEM hex nut is manufactured to exact standards and sourced from the manufacturer. It can be used with trimmers and mowers from RYOBI, MTD, Bolens, Troy-Bilt, Yard Machines, Huskee, Yard Man, and Cub Cadet. Check the parts diagram for exact application and location of this nut and note that it may have multiple uses on select models. This hex nut is sold individually, and additional nuts will require the purchase of multiple pieces. In order to replace this nut, a hex socket wrench and driver will be required. Always wear gloves for safety.

This is a genuine washer lock that is designed to be used in various applications on lawn and garden equipment. It is a standard piece of hardware that provides a strong seal and distributes pressure between the two connected components. Because of the exposure to high pressure and vibrations, these washers can become damaged or broken over time. If they are not replaced promptly, the connection between the two different parts may be affected. These washers are small and can also get lost while doing other repairs, so it may be helpful to keep some extras on hand. This genuine OEM lock washer is manufactured to exact standards and is compatible with several lawn and garden machines from Husky, Cub Cadet, MTD, RYOBI, Yard Machines, Troy Bilt, Yard Man, and Bolens. It can be used with over 150 models of tractors, blowers, cultivators, trimmers, and snowblowers. Consult the parts diagram for the exact location(s) and application(s) of this washer. Replacing this washer will require a screwdriver or socket set to attach the screws or bolts that the washer is securing. Always wear gloves for hand protection when replacing engine components like this lock washer.

This hex nut is designed for use with select trimmers and mowers. It is a standard hardware part that may have multiple applications depending on the type of unit and model. The nut is typically used to secure engine components or housing elements to provide safe use of the machine. These nuts are durable, but they are small and can become lost during other repairs. The constant exposure to vibrations and use can also cause them to strip or become damaged over time. Either way, a replacement with this genuine hex nut will resolve the issue and get equipment back in working order. This genuine OEM hex nut is manufactured to exact standards and sourced from the manufacturer. It can be used with trimmers and mowers from RYOBI, MTD, Bolens, Troy-Bilt, Yard Machines, Huskee, Yard Man, and Cub Cadet. Check the parts diagram for exact application and location of this nut and note that it may have multiple uses on select models. This hex nut is sold individually, and additional nuts will require the purchase of multiple pieces. In order to replace this nut, a hex socket wrench and driver will be required. Always wear gloves for safety.

This hex screw is a genuine MTD part. It is a replacement part for lawn tractors, edgers, lawn mowers, snow blowers, tillers, string trimmers, chainsaws, log splitters, and wood chippers. It is a standard-sized part and it may be compatible with other machines as well.This particular screw is a one-inch metal screw and may be found in various places on the pieces of equipment. Refer to a parts diagram to find out where it is used on the equipment.This hex screw is a genuine OEM part sourced directly from the manufacturer. It is sold individually. Most machines have multiple screws; check others to see if more need replacement. It is compatible with several makes, including but not limited to Bolens, MTD, Troy-Bilt, Yard-Man, Yard Machines, Ryobi, Husky, Cub Cadet, Montgomery Ward, MasterCut, Turf King, and more.

A hex screw fastens and holds two components together. It has a hexagonal head and features threading starting underneath the shoulder down to the tip. Its all-metal construction offers rigidity and longer lifespan. It is also threaded, so you can conveniently loosen or tighten in position. It measures 1/4-20 x 0.5 inch and comes in brass or gold color. Take note that this replacement hex screw may beused in different locations of a machine. Double check the device’s model number for compatibility. To install this hex screw, you will need a hex wrench or a hex socket. This hex screw is a replacement made by MTD. This screw/bolt may be used on lawn mowers, snowblowers, tillers, string trimmers, leaf blowers, edgers, chainsaws, pole pruners, log splitters, or wood chippers made by Craftsman, Toro, Cub Cadet, Ryobi, Troy-Bilt, Husky, Murray, Yard Machines, MTD, Huskee, Montgomery Wards, Bolens, Yard-Man, Turf King, or MasterCut. This OEM hex screw is sold individually.

This flat washer is a genuine MTD part, sold individually. This flat washer can be used as a replacement part in lawnmowers, snowblowers, tillers, string trimmers, leaf blowers, edgers, log splitters, and wood chippers. The purpose of a flat washer for one of these small engine outdoor appliances is to prevent friction between one or more components while also creating spacing between components.The flat washer in a small engine outdoor appliance is a very small component that can be easily lost or misplaced at any point during its typical lifespan. The flat washer could also suffer damage during the course of general use, and if the damage to the flat washer precludes it from reducing friction and spacing one or more components, the flat washer should be removed and replaced by this genuine OEM replacement part.Sourced directly from the manufacturer, this component is a genuine replacement part that is sold individually. This flat washer is compatible with the following outdoor appliance brands: MTD, Craftsman, Cub Cadet, Ryobi, Troy-Bilt, Yard Machines, Huskee, Montgomery Wards, Yard-Man, Turf King, and MasterCut.

This is a simple extension spring with an outside diameter of 0.38 and a slack length of 2.5. It is primarily used as an extension spring for snowblowers, but may be compatible with other lawn equipment. It’s designed to apply tension as the throttle is applied. The more gas there is, the more resistance will be present. Under most circumstances, replacement is easy. When the spring breaks or gets rusty, look at both points of attachment. Memorize where it’s attached, or take a picture, and remove the old spring using a pair of pliers if necessary. Install the new spring and the tool is ready to use. This is an OEM part sourced directly from MTD, and it is sold individually. It’s black in color and was initially designed for Troy-Bilt lawnmowers. However, because this is a versatile part, it has since been repurposed for a number of MTD and related machines in other brands. These include lawn tractors and snowblowers, as well as lawnmowers, in brands such as Ryobi, Yard Machines, Husky, and Cub Cadet.

This tubeless air valve attaches to wheels, allowing air into and out of the tires on various lawn equipment. Regularly replacing this part is considered a part of routine maintenance. Make sure that you use appropriate pliers and other tools for easy installation. Be sure to use gloves when replacing these valves and work with caution so as not to damage the sensitive parts. This OEM tubeless air valve can be the perfect fit for compatible wheels on equipment such as lawn mowers, snowblowers, tillers, edgers, log splitters, and wood chippers. It is designed for use with select models from MTD, including Craftsman, Troy-Bilt, Bolens, Remington, Yardman, RYOBI, Husky, Power Pro, and many others. There is a limited parts warranty on this valve, which is made of durable rubber and metal and designed to offer a high-quality replacement. Sold individually.

The hex screw is a specialty screw that has various uses on lawn and garden equipment engines and housings. Over time, screws are known to become worn, corroded, lost, or otherwise damaged. This is an identical replacement that will have many locations and applications, but when it becomes damaged or gets lost it should be replaced as soon as possible. This is a specialty screw that is not designed for general use. Refer to parts diagrams for the appropriate location and installation of this screw for a guaranteed fit. This OEM hex screw is manufactured to exact standards and can be used in more than 150 different brands of machines. It is compatible with snow throwers, lawn mowers, and blowers from RYOBI, Yard Machines, Yard Man, Poulan, Troy-Bilt, MTD, Bolens, Cub Cadet, and Husky. This high-quality hex screw is made of metal and sold as an individual unit. Those who need more than one screw will have to purchase multiple quantities. A wrench is required to replace this screw. Always allow engines to cool completely before performing any repairs and wear gloves for hand protection.

This replacement part is a brake spring. This is a genuine replacement part made by MTD. Brake springs assist in ensuring that the brake is able to properly stop the equipment. A new brake spring might be needed if the current one is missing or damaged in any way. Due to the nature of the spring, it could become brittle and snap after years of normal use. If this is the case, be sure to replace this spring as soon as possible. Work gloves are recommended as this part can be dangerous if handled improperly. This is a genuine OEM replacement part. This part is sold individually and is sourced directly from the manufacturer.

This extension spring attaches to the axle support bracket and the drive belt idler pulley on many types of lawn and garden equipment. It creates additional tension to the drive belt idler pulley. Sometimes the extension spring can be stretched out or may break, often caused through excess use. If this is the case, the spring will need to be replaced.If the spring is broken or no longer creates the appropriate amount of tension, replacement is required. It is an easy process that only requires a set of pliers. The pliers can be used to take the old spring off of the yard equipment before attaching the new extension spring. Make sure the equipment is on a stable surface and powered off when working with it. Remove the spark plug wire to prevent accidents.This extension spring is an authentic OEM replacement part sourced directly from the manufacturer. It is sold as an individual component. The spring is made to be used with lawnmowers, lawn tractors, and tillers created by MasterCut, Yard-Man, Bolens, Huskee, MTD, Yard Machines, Murray, Troy-Bilt, Cub Cadet, and Craftsman.

This part is a replacement flange bearing. This is a genuine OEM part made by MTD and has been sourced directly from the manufacturer. It is intended to replace a defective, worn, or broken flange bearing in various models of outdoor power equipment.Bearings reduce friction between moving parts and thus are essential to proper equipment functionality. Bearings may become worn, corroded, or ineffective over time and thus will need to be replaced with a genuine OEM replacement part. Wear work gloves to protect the hands and check that equipment is powered off and cooled down before starting the repair process. For more accurate information on how and where to use this flanged bearing, the appropriate owner's manual and equipment diagrams should be referred to. This flange bearing is a genuine OEM part made of durable metal and is sold individually. It is suitable for use with outdoor power equipment models that have been manufactured by MTD, Craftsman, Troy-Bilt, and other brands.

This flat idler pulley is intended for use with some lawn tractor models. The idler pulley fits between the pulley and the variable speed pulley. It helps to ensure the tractor is operating efficiently by providing tension and guiding the drive belt in the engine. One of the common signs of a problematic idler pulley is a squealing sound when the engine is idling.The pulley could become damaged due to wear and tear over time. There is also a chance for corrosion, although this is rare except in machines that have had the same pulleys for many years. They will need to replace problematic pulleys to make sure their tractor runs properly. The owner can replace the pulley on their own using pliers, a screwdriver, and a wrench set.The flat idler pulley is for use with select lawn tractors from MTD, Ryobi, Yard Machines, Yard-Man, and Husky. The part is sold individually. It is a genuine OEM replacement part that has been sourced from the manufacturer.

This lock washer is a genuine MTD part, sold individually. This lock washer can be used as a replacement part in lawn mowers, snowblowers, tillers, string trimmers, leaf blowers, edgers, log splitters, and wood chippers.The lock washer in a small engine outdoor appliance is a small component that can easily be lost or misplaced during the typical lifespan of the appliance. If this occurs, it should be replaced once the operator of the appliance notices its absence. The washer can also be stripped away as a result of general wear and tear, in which case it should be removed and replaced by this genuine OEM replacement part.This is a genuine OEM replacement part sourced directly from the manufacturer. It is sold individually. This lock washer is compatible with the following outdoor appliance brands: MTD, Craftsman, Cub Cadet, Troy-Bilt, Husky, Broan, Yard Machines, Huskee, Montgomery Wards, Yard Man, Turf King, and MasterCut.

This V-belt is a genuine MTD part, sold individually. This V-belt can be used as a replacement part in a lawn mower or a lawn tractor. The purpose of the V-belt in a lawn mower or lawn tractor is to facilitate the self-propelling feature of the appliance through rotation.The V-belt of a lawn mower or a lawn tractor might need to be replaced if the V-belt is worn out or damaged. If the V-belt is frayed, torn, ripped, scraped, dented, eroded, or warped to the point that it cannot rotate and drive the lawn mower, the V-belt should be removed and replaced by this genuine OEM replacement part. It is a simple replacement process that can be easily performed with only basic tools, in accordance with the proper instructions sourced from a relevant appliance manual.Sourced directly from the manufacturer, this component is a genuine replacement part that is sold individually. This V-belt is compatible with the following outdoor appliance brands: MTD and Yard Machines.

This replacement part is a washer. This part is a genuine replacement part made by MTD. Washers are an important part of many different types of appliances. These small pieces work together with nuts and screws to help different parts of the machine stay in place and secure so that everything operates smoothly. A new washer might be needed if the current one is missing or damaged in any way. It is possible that washers can become stripped over time and might not stay in place. If this is the case it is recommended that it be replaced. This repair should be fairly easy and only require a screwdriver and possible pliers. Be sure to wear work gloves during this repair. This is a genuine OEM replacement part. This part is sold individually and is sourced directly from the manufacturer to ensure proper fit and long-lasting use.

This variable speed pulley is a genuine MTD part, sold individually. This variable speed pulley can be used as a replacement part in a lawn mower. The purpose of a variable speed pulley in a lawn mower is to regulate and manage the speed at which the motor runs so that the speed can be kept within a stable range for the safety of the operator of the appliance.The variable speed pulley in a lawn mower might have to be replaced if the variable speed pulley can no longer properly manage the speed of the lawn mower. This could occur if the variable speed pulley suffers damage from general wear and tear with long-term use or as the result of an accidental collision with a hard object that warps the variable speed pulley beyond functionality. This replacement should be executed in accordance with the proper instructions sourced from a relevant appliance manual.This component is a genuine OEM replacement part sourced directly from the manufacturer. It is sold individually. This variable speed pulley is compatible with the following outdoor appliance brands: MTD.

This spring clip is a genuine MTD replacement part for lawn tractors and lawnmowers. The function of a spring clip is to fasten individual components together by maintaining spring tension. This spring clip is a metal part that most commonly clips the frame of the lawnmower or tractor to the deck.A lawnmower or lawn tractor spring clip might have to be replaced if there is damage to the part that loosens the spring tension and releases the components that it is meant to clamp together. If the spring clip is damaged, it must be removed and replaced immediately, as all components of the lawnmower or lawn tractor must be held together to ensure safe appliance use. Remember to always wear gloves when handling, repairing, and operating outdoor equipment. This spring clip is compatible with the following brands: MTD, Yard Man, Troy-Bilt, and Yard Machines. This part sold individually.

This replacement part is a washer. This is a genuine replacement part made by MTD. This specific washer is an important part of various machinery. These small pieces are responsible for working together with other small parts to help ensure the proper functioning of any machine. It also allows for parts to stay in secure during use. A new washer might be needed if the current one is visibly missing or damaged. Washers can become stripped over time and might not stay in place. If this is the case it is recommended that it be replaced. This repair should be easy and only require a screwdriver. Be sure the engine is completely powered down before attempting this repair. This part is sold individually and is sourced directly from the manufacturer. This washer is a genuine OEM replacement part.

This screw is a genuine MTD part. A screw can be used as a replacement part in lawn mowers, snowblowers, tillers, chainsaws, log splitters, and wood chippers. The purpose of this genuine OEM part is to rotate and pierce into one or more components within the internal or external machinery of the appliance so that the stability of those components is maintained throughout general use of the appliance.The screw in an lawn equipment might need to be replaced if it has been lost, misplaced, or has suffered enough damage as to loosen the components that it is supposed to secure.This component is a genuine OEM replacement part sourced directly from the manufacturer. It is sold individually. This screw is compatible with equipment manufactured by MTD, Craftsman, Cub Cadet, Ryobi, Troy-Bilt, Murray, Yard Machines, Huskee, Montgomery Wards, Yard Man, Turf King, and MasterCut.

This is a replacement bell washer, a flat washer that can be used with a wide range of various types of lawn and garden equipment. The inner dimension of this washer is 0.40 inches, while the outer dimension is 0.88 inches. Washers are typically used as a way to help ensure a tight connection when used with bolts or screws. They will also help to distribute the pressure of the connection and reduce the risk of corrosion. Washers will also provide some protection from damage during installation. Washers could need to be replaced for any number of reasons. In some cases, they might have become corroded or worn down over time. This could mean they no longer provide a solid and secure connection. Other times, the washer could become lost while working on the machine. Owners should always be sure that they replace any lost or damaged washers right away. Not using washers can reduce the lifespan of the machine. This is a genuine OEM bell washer that is sold individually. It is typically used in lawn mowers, snowblowers, tillers, leaf blowers, string trimmers, log splitters, wood chippers, edgers, and chainsaws. It is compatible with Craftsman, Cub Cadet, Ryobi, Troy-Bilt, Husky, Murray, Yard Machines, MTD, Huskee, Montgomery Wards, Bolens, Yard-Man, Turf King, and MasterCut brands.

This replacement part is a cotter pin. It is a genuine replacement part made by MTD. Cotter pins are also sometimes known as clevis pins and are responsible for fastening two metals together. This allows the machine to work properly and operate smoothly. A new cotter pin might be needed if the current ones are damaged in any way or even missing. This part is small so it can be misplaced after years of normal wear and tear. It is possible that this part become stripped or lodged in place over time. The repair should be fairly easy and only require common tools. Be sure the engine is completely powered down before beginning this repair. This pin is sold individually. This is a genuine OEM replacement part sourced directly from the manufacturer to ensure a proper fit.

This replacement part is a hex screw, and it is intended for use in different types of lawn equipment. This is a genuine replacement part made by MTD. This screw can be used in a variety of ways depending on the repair needed. Hex screws are similar to normal screws except they have a six-sided head, like a hexagon. A new hex screw might be needed if the current one is damaged or missing. It is common that screws may become stripped or loose overtime, causing them to fall out. If any parts of the lawn mower are becoming loose or falling off, the hex screw might be missing. This replacement should be fairly easy and should only require a screwdriver and possibly pliers. This part is a genuine OEM replacement part and is sold individually. Be sure to purchase the correct amount as some appliances require more than one hex screw.

A flat washer is used with many types of lawn and garden equipment, such as lawnmowers and log splitters. In many cases, the washer is used to hold a bolt in place on a blade. It will often be found between the blade surface and the bolt. The washer is flat with a center hole and ensures the main components of the equipment stay stable and held together when the machine is being used.Over time, the washers on lawn equipment can start to become damaged or break which can result in subpar performance. If a visual inspection shows that the flat washer has warped or is broken, it will need to be replaced. The process is fairly easy and will require nothing more than a screwdriver or socket wrench. The screw or bolt near the washer will need to be removed so the washer can be replaced.This washer is a genuine OEM replacement part that comes as an individual component sourced directly from the manufacturer. It fits lawnmowers, wood chippers, snowblowers, and log splitters by MasterCut, Craftsman, Yard-Man, Toro, Bolens, Cub Cadet, Bolens, Ryobi, Montgomery Wards, Troy-Bilt, Huskee, Murray, MTD, and Yard Machines.

This is a ferrule from MTD. This particular ferrule is designed for use in the lawn mower's driveshaft. The wire rope (or tension spring) is attached to the variable speed pulley and engages the driveshaft/transmission system.A faulty ferrule on a lawn mower may cause the wire rope to snap or become disconnected from the driveshaft. The rope doesn't necessarily have to break to signal a malfunctioning ferrule. The rope may lose torque and cannot provide the tension needed to make adjustments to the driveshaft. In simpler terms, the lawn mower may lose its ability to shift between different speeds.The ferrule is located near the variable speed pulley (drive pulley) of the lawn mower. The deck will need to be removed to make any repairs to the ferrule. The belts will need to be removed also. Always make sure the brake is engaged before starting any repairs on this section of the lawn mower. This part is compatible with Craftsmen, TroyBilt, and MTD lawn mowers.

This spring washer has a conical shape with an open center. It has a shape like a traditional washer but is smaller than a typical coiled spring. These washers can handle a larger load than a coiled spring and are used in lawn and garden equipment to cushion heavy loads. Over time, these washers can experience wear and tear which will lead to damage or breakage. When this occurs, the spring washer will need to be replaced.Visually inspect the spring washer for damage like scratches, breaks, and dents. If these occur or the washer is warped, it needs to be replaced. The process involves removing the nut or screw above the washer with a screwdriver or other tool. After accessing the spring washer, it can be removed and a replacement part can be added to the equipment. Reassemble the parts and the equipment should work again.This is a genuine OEM spring washer replacement part that is sold individually. It's sourced directly from the manufacturer. It is compatible with lawnmowers, wood chippers, snowblowers, log splitters, tillers, chainsaws, string trimmers, and edgers by Craftsman, MasterCut, Toro, Turf King, Cub Cadet, Yard-Man, Ryobi, Bolens, Husky, Montgomery Wards, Murray, Huskee, Yard Machines, and MTD.

This muffler is a genuine MTD part, sold individually. This muffler can be used as a replacement part for a lawn mower or a lawn tractor. The purpose of a muffler is to quiet the engine.If the engine is particularly loud and the muffler appears to be rusted or otherwise damaged after a visual inspection, it should be removed and replaced by this genuine OEM replacement part. Remember to always wear gloves when handling, repairing, and operating outdoor equipment.This is an OEM part sourced directly from the manufacturer. It is sold individually. This muffler is compatible with the following outdoor appliance brands: MTD, Yard Machines, and Ryobi.