Parts for Briggs & Stratton 31A507-0113-B1: Crankshaft, Cylinder, Engine Sump, Gasket Set-Engine, Operator's Manual, Piston, Rings, Connecting Rod, Warning Label Parts

This oil seal is a genuine OEM replacement part designed for use on a wide variety of small gas-powered appliance engines. Although small, an oil seal is an important part of the oil cylinder assembly as it prevents oil from leaking into other parts of the engine. If oil begins to leak into the engine, it can corrode other parts or even pose a fire hazard. Therefore, it's important that the oil cylinder is tightly sealed to prevent any damage to the engine. Seals can wear out over time, especially if exposed to heat. Heat will cause the seal to shrink, effectively unsealing the oil cylinder. Before making this repair, be sure to drain the oil cylinder of any oil and be prepared for an involved replacement process. This part is compatible with Toro, Murray, and Briggs & Stratton appliances and is sourced from the original manufacturer. It ship individually of other hardware.

This authentic OEM replacement cylinder head gasket fits a variety of different lawn tractors. The cylinder head, or more commonly just “head”, is an integral part of the combustion chamber. The head sits at the top of the cylinders and closes them off to create a chamber. The head usually has openings that connect to the exhaust and airflow. However, it is important that neither air nor exhaust leak in or out of these connections. The head uses several of these gaskets to prevent that from happening. The cylinder head makes up a part of the combustion chamber and, as such, gets very hot. Over a lifetime of use, a cylinder head gasket can overheat and warp. When this happens, it will no longer seal the cylinder head and must be replaced. Replacing a cylinder head gasket requires disassembling much of the engine, so follow the user's manual closely while making this repair. This part is compatible with Toro and Briggs & Stratton lawn tractors and comes sourced from its original manufacturer. This part does not include any additional hardware.

This is a genuine replacement breather tube that can be used with certain models of lawn tractor. The breather tube attaches to the engine and is responsible for directing the excess fluids and gases that escape the engine under high pressure. This ensures that the engine isn't flooded and that it can operate at peak performance. The breather tube is made of durable plastic, but it can become cracked or broken over time because it is exposed to regular vibrations and high heat. If the breather tube fails, the engine may not be able to operate. Fluids and gases could also cause other damage to the engine if they aren't routed appropriately. Replacing the breather tube should be done promptly to prevent further issues. This OEM breather tube is manufactured by Briggs & Stratton as an identical replacement for the model that came with the original unit. This particular model is compatible with hundreds of lawn tractors from Briggs & Stratton and Toro. It is sold as an individual part. All related parts and hardware will require a separate purchase. Never perform repairs on a hot engine as this can lead to injury or engine damage.

The crankcase is a metal case over the crankshaft of an engine. It is essential to the operation of the engine as it shields the crankshaft and rods from any debris. It also ensures the pressurization of the chamber and helps to keep pistons and oil moving properly. The crankshaft gasket is part of what keeps the seal and allows the engine to function. It can wear with time or even become dry and cracked. It will cause oil leakage, smoke, and even engine failure. This is a genuine OEM crankcase gasket for lawnmowers, lawn tractors, and small engines produced by Toro, Cub Cadet, MTD, Briggs & Stratton, and Simplicity. It comes as an individual component.

This replacement oil drain plug is a genuine OEM part for a lawn tractor or generator engine. The oil drain plug connects to the base of the oil tank and allows the appliance owner to drain used oil and replace it with new, clean oil. The oil drain plug is threaded to screw into the oil tank and prevent it from popping out of place while the appliance is in use. The most likely reason to replace an oil drain plug is if the old plug's threading has become stripped and no longer holds onto the oil tank. Alternatively, the plug is quite small and could easily be misplaced during an oil change. If lost, oil will leak from the engine, causing parts to overheat. Fortunately, replacing a lost or damaged oil drain plug is simple and only requires screwing a new plug into place. This replacement plug is a high-quality part that fits Craftsman and Murray products. It comes sourced from its original manufacturer and ships individually, without any additional hardware.

The oil seal plays an important role in protecting the oil as it flows into the crankshaft and engine block. It creates a strong seal and ensures that the oil can flow effectively into the engine for proper operation. Over time, rubber seals degrade and wear out, so their replacement will be a part of routine maintenance. If there are oil leaks around the crankshaft or engine, this seal may be the culprit. Replacing the oil seal will ensure proper oil pressure and avoid oil leaks that could lead to more serious damage. When installing this replacement part, it is important to use a rubber mallet or large socket to tap the part into place. This is a genuine Briggs & Stratton part that is a replacement for various compatible small engines. It can fit select engines on Toro, Husqvarna, and Briggs & Stratton equipment. This oil seal is sold individually and compatible with a variety of engines. This OEM replacement is made of durable rubber and sold individually.

This is a flywheel key that is used in many types of lawn and garden equipment. It is fits into a slot located on the crankshaft. It also aligns with the keyway found on the flywheel. This flywheel key is tasked with ensuring the flywheel makes rotations in time with the crankshaft. The key can become damaged or lose and will need to be replaced to ensure the lawn equipment can continue to be used.Inspecting the flywheel key involves removing the gas tank and cowl from the equipment. From there, a user can determine whether the part is damaged or broken. If it needs to be replaced, the part can be removed from the flywheel, and a new flywheel key can be installed. The process takes little time and requires only a nut driver and a wrench set. Make sure to reassemble all parts before using the tool.This flywheel key is an authentic OEM replacement component sourced directly from the manufacturer. It is sold as a single part. The key can be used with wood chippers, leaf blowers, tillers, and lawnmowers manufactured by Simplicity, Briggs & Stratton, Cub Cadet, and Snapper.

This replacement part is a piston ring set and is intended for use in different types of small engines. This is a genuine replacement part made by Midwest Engine. Piston rings are and important part of many engines in that they are used to form a tight seal between the cylinder wall and piston itself. The seal is able to separate the crankcase and the combustion chamber so that the engine continues to run smoothly and efficiently. A new piston ring set might be needed if the user notices that the engine has lost compression. This means that the rings have become damaged and the seal is no longer intact. Be sure the engine is powered down and cooled off before attempting this repair. Consult the user manual on more specific instructions.These piston rings are sold as a set and are sourced directly from the manufacturer. This part is a genuine OEM replacement part.

This is a genuine replacement for the camshaft in select Briggs & Stratton engines. The camshaft is found in the crankcase assembly and is designed to help turn the crankshaft to power the engine. This part helps crank the engine and so it is exposed to constant wear and repetitive motion, which can cause it to deteriorate with regular use. It can also break or become damaged due to impact. Without a properly functioning camshaft, the engine will not be able to function, so a failed part must be replaced. This genuine OEM camshaft is manufactured to specific standards and designed to fit select Briggs & Stratton and Toro equipment that has compatible engines. This camshaft includes the part itself along with two metal tappet valves, and is sold as an individual unit. This part is made of durable metal. Other components are sold separately. Allow the engine to cool completely before performing any repairs and always wear gloves to provide hand protection when working on lawn and garden equipment and engines.

This genuine OEM replacement intake manifold gasket for a small gas-powered lawn appliance motor acts as a seal between two engine components, like any other gasket. However, the intake manifold gasket is one of the most necessary gaskets because it is responsible for sealing the engine vacuum and coolant. Intake manifold gaskets can be damaged because of their location in the engine. If the engine has been running hot for a while, the metal can expand and crush the gasket, causing it to fail. If this happens, the engine will begin overheating, as coolant can no longer reach the areas where it is needed. Replacing an intake manifold gasket will mean removing the air filter and its housing, the oil drain tube, blower housing, breather tube, and carburetor. Making this repair requires a set of socket wrenches and screwdrivers. This part is compatible with a wide range of mowers, chippers, and blowers from Briggs & Stratton, Toro, Cub Cadet, MTD, Simplicity, and Lawn Boy. It is sourced from the original manufacturer and ships individually.

This is an O-ring seal that can be used in many types of engines for lawn and garden equipment. It is responsible for sealing the connection between the cylinder head assembly and the intake manifold. The sealing process prevents dirt and debris from moving throughout the equipment and getting into the motor. As time passes, the O-ring seal can shrink, causing oil or air leaks and decreasing engine performance.When the O-ring is damaged, clogged, worn, or broken, it will need to be cleaned or replaced before using the lawn equipment again. The damaged or broken O-ring seal can be removed using a flat head screwdriver. After it has been removed, the replacement component can be installed in the same place. Make sure that the O-ring seal is properly seated to avoid additional leaks. Reassemble the parts before using the tool. This is a genuine OEM replacement part that is sourced directly from the manufacturer. It is sold individually. It is used in lawnmowers, lawn tractors, snowblowers, and wood chippers manufactured by Simplicity, MTD, Lawn-Boy, Cub Cadet, Toro, and Briggs & Stratton.

This O-ring seal is used in all sorts of lawn and garden equipment as a seal for the oil dipstick. It helps seal the system from debris and dirt that could otherwise reach the oil and end up in the motor. Over time, an O-ring will start to shrink, which can result in air and oil leaks and a poorly performing engine. If the O-ring has pits, blisters, or pocks on the surface, it will also need to be replaced.If an O-ring seal is worn, damaged, or clogged, it should be cleaned or replaced before the equipment that houses it is used again. A flat head screwdriver can be used to remove the damaged O-ring. Once the old one has been removed, a new one can be placed into the same position before using the tool.This O-ring seal is designed for lawnmowers, snowblowers, tillers, wood chippers, pressure washers, generators, and leaf blowers. It is compatible with equipment from Simplicity, Briggs & Stratton, MTD, Craftsman, Snapper, Toro, Lawn-Boy, and Cub Cadet. The seal is a genuine OEM replacement part directly sourced from the manufacturer. It comes with a single seal.

This replacement valve seal is a genuine OEM part for a lawn tractor or mower. The valve stem is a type of valve that transfers oil into the cylinder and then immediately reseals due to the pressure in the chamber. However, if the seal is damaged, it will not close and oil will leak into the cylinder. If this happens, the cylinder head may become overly lubricated and not run well. This seal helps prevent that from happening. It fastens to the intake valve and valve stem keeper. Seals will naturally wear out over time due to stress and exposure to corrosive oxidizing agents in an engine. When this happens, the valve will leak oil. To test if the valve seal is compromised, look for whitish-grey smoke that indicates burning oil and also measure to see how much oil the engine is consuming. If the seal is breached, use a screwdriver and socket wrench set to change out the part. This top of the line replacement valve seal is compatible with Briggs & Stratton, Toro, and Lawn Boy lawn tractors. It is sourced from the original manufacturer and ships individually.

This is an exhaust gasket designed to fit between the engine exhaust and the exhaust system. It’s designed for use on lawn tractors and is the OEM part for many tractors in the Briggs & Stratton family of brands. When properly installed, it will prevent exhaust leakage. It will also flex enough to allow for parts expanding due to heat. The main symptom of a failed gasket is exhaust leaking from the joint. Gaskets can fail due to a variety of factors. They can dry out, lose flexibility, and crack. They can chafe, losing their heat resistance and drying out prematurely. They can even tear due to excessive engine vibration. In this case, it’s advisable to check your engine mounts to make sure they’re fully secure and tightened. To replace the exhaust gasket, with the engine off, remove the two screws that run through the old gasket. Remove the old gasket and insert the new gasket carefully into place. Screw the exhaust system back together to complete the repair. This is an OEM part sourced directly from the manufacturer and is sold individually.

This gasket-rocker cover, also called a valve cover gasket, is used in small engines to create an air-tight seal between the engine and the valve cover. This cover is also made to prevent oil from leaking as it travels throughout the engine. It’s an important component to ensure the cylinder head is protected from the elements and oil doesn’t leave the motor. If this component has failed, replacement is essential to avoid engine failure. Gasket-rocker covers are protected on the bottom and top, but they may experience damage from the sides. Over time, the gasket can crack after becoming brittle, which allows dirt, heat, and debris exposure. This can lead to the cover breaking down and leaking, which may cause reduced engine performance and cosmetic problems. Some signs that replacement is needed include a burning oil smell, a dirty cover, and an engine that runs low on oil. This gasket-rocker cover is a genuine OEM component that is directly from the manufacturer. It’s designed for use with Briggs & Stratton and Toro lawn tractors and small engines. It’s sold individually and can be attached using a torque wrench or a socket set.

O-rings are used in various locations and applications to seal and protect connections throughout the engine. The O-ring is typically used for rigid connections where a proper seal is required for optimal functioning. It is critical to have the right size and style of O-ring installed for proper operation. These parts tend to wear over time and that can affect their ability to seal. If O-rings are degraded or damaged in any way, they need to be replaced as soon as possible to prevent further damage. This O-ring is manufactured to exact specifications by Briggs & Stratton to provide a genuine OEM replacement. It can be used in various Toro, Briggs & Stratton, and Lawn-Boy engines. Typically found in lawn tractor engines, this part is compatible with more than 150 machines. This O-ring is made from durable materials and sold individually. Always disconnect the spark plug before beginning engine work and wear gloves for hand protection.