Parts for Briggs & Stratton 120312-0301-E1: Gear Case Reduction / Muffler Guard Parts

This cylinder head gasket is a genuine Midwest Engine part, sold individually. This cylinder head gasket can be used as a replacement part for a variety of small engine outdoor appliances including lawn mowers, snowblowers, tillers, pressure washers, leaf blowers, and wood chippers. The purpose of the cylinder head gasket is to protect the cylinder head from the accumulation of debris by sealing it off; the cylinder head gasket also prevents internal materials from leaking out of the appliance.The cylinder head gasket might have to be replaced if the seal is broken and external materials can pass through into the cylinder head. This could be a result of puncturing, tearing, scraping, or eroding to the component, in which case the component should be replaced by this genuine OEM replacement part. Remember to always wear gloves when handling, repairing, and operating outdoor equipment. Always unplug the appliance before performing any kind of repair or replacement. This is an OEM part sourced directly from the manufacturer, and it is sold individually. This cylinder head gasket is compatible with the following outdoor appliance brands: Midwest Engine, Briggs & Stratton, Toro, Cub Cadet, Snapper, and Simplicity.

Seals the two halves of your engine crankcase to prevent oil leaks. Replace when you notice leaking or during crankcase maintenance. Confirm fit.

Fix oil leaks or complete oil changes with this engine oil drain plug. Essential for draining oil from lawn and garden equipment motors. Direct fit.

Oil seal for lawn and garden engines keeps lubricant contained within designated areas. Replace if leaking oil or during engine maintenance. Verify fit.

Fix engine knocking or power loss with this piston pin lock. Secures the piston pin in small engines. Basic mechanical skills needed for installation.

This screw is a genuine Midwest Engine replacement part for small engine appliances, including lawn tractors, lawn mowers, snowblowers, leaf blowers, vacuums, and tillers. The purpose of a screw is to tightly link materials together through rotation that pierces into the material. A screw might have to be replaced in the event that it is lost or misplaced, a common occurrence due to its size. A screw might also be replaced if it deteriorates over time, through erosion, cracking, or piercing, thereby reducing its efficacy in holding materials together. This kind of damage can be attributed to general overuse, to age, or simply to long-term exposure. If a screw is subject to any of this kind of damage, it is best to replace it immediately, as the materials held together by the screw must continue to be held together. Remember to always wear gloves when handling, repairing, and operating outdoor equipment. This screw is compatible with the following brands: Briggs & Stratton, Toro, Cub Cadet, and Lawn Boy.

Engine running rough or losing power? A worn exhaust valve may be the culprit. This valve controls exhaust gas flow for proper engine performance.

Replace a worn valve retainer if your engine has compression loss or valve train noise. This washer-shaped part secures the valve spring lock on the valve.

If your engine won't start or runs rough, the camshaft may be broken. This part opens and closes valves for proper combustion. Moderate skill needed.

This is a genuine intake gasket replacement that is designed for use in certain lawn mower engines. This specialty intake gasket is what is responsible for creating the seal between the carburetor and the breather tube so that no gases or fluids leak when they pass between the two. This gasket is subjected to constant high pressure, vibrations, and extreme temperatures, and over time it will need replaced. Gaskets are generally considered a part of routine maintenance on most engines, and many owners will choose to keep a few extra on hand in case of an urgent repair need. This genuine OEM intake gasket is manufactured by Briggs & Stratton and designed to offer an identical replacement for the original gasket that came on the new unit. It is compatible with lawn mower engines in models from Briggs & Stratton and Toro, and will fit on over 150 different engine models in lawn mowers from these brands. The intake gasket is made of durable composite material. It is also a good idea to replace gaskets when servicing the carburetor to ensure a proper seal after reassembly. Be sure to use the right tools to install this part so that it isn't damaged in the process.

Mounting screw for lawn and garden engines. Secures engine components and covers. Replace if stripped, corroded, missing, or damaged during maintenance.

This part is a replacement shaft choke. This is a genuine OEM part made by Midwest Engine and has been sourced directly from the manufacturer. It can be used to replace a broken or otherwise defective shaft choke but in a variety of outdoor power equipment.The shaft choke attaches to the engine carburetor and allows adjustments to the carburetor itself by the user. Over time, this part may become worn or broken, requiring replacement. It's advisable to wear work gloves to protect the hands. It's important when working on or near an engine to make sure the equipment is powered off and completely cooled down before starting any repairs. For more accurate information on how and where to install this shaft choke, the appropriate owner's manual and equipment diagrams should be utilized.As an authentic replacement part, this shaft choke is suitable for use on several different models of small engine outdoor power equipment manufactured by Midwest Engine and various other brands. Please note that this is a genuine part made of high-quality, durable materials and is sold individually.

Fix a flooded carburetor with this float. Controls fuel flow to the carburetor bowl, preventing flooding and ensuring proper air-fuel mixture.

Cylinder head plate for lawn and garden engines. Replaces cracked, damaged, or missing head plates. Secures and protects the cylinder head assembly.

This is a high-quality metal air cleaner base that is designed to be used on wood chippers and tillers. The purpose of the air cleaner base is to keep the air filter element secure and protected. It also fastens to the carburetor. This air cleaner base comes with the base, a screw, and a composite gasket to seal the part to the tool. Through use, the air cleaner base can become damaged or worn out and will need to be replaced to keep the air cleaner secure and protected.When replacing the air cleaner base, the only tool required is a screwdriver. Turn off the lawn and garden equipment and remove the spark plug wire. Use the screwdriver to remove the air filter cover from the carburetor. A new air filter cleaner can be installed in the same location. Make sure to tighten the screws and replace the spark plug wire before use.This is an authentic OEM replacement part that is sourced directly from the manufacturer. It is sold as an individual component. The air cleaner base is designed for use with tillers and wood chippers manufactured by Briggs & Stratton, Simplicity, and Snapper.

An air cleaner gasket is a valuable barrier between the carburetor of a machine and the air filter. This air cleaner gasket is made out of durable composite material. It is designed for use with outdoor lawn and garden power equipment such as lawn mowers, snowblowers, tillers, leaf blowers, and wood chippers. It is compatible with products by brands such as Briggs & Stratton, Toro, Cub Cadet, Snapper, and Simplicity.The air cleaner gasket part is crucial to the health and longevity of the machine's engine. The purpose of the air cleaner gasket is to help seal and protect the engine, the air cleaner, and other internal systems from dirt, contaminants, and debris that can often become the source of engine problems.The proper gasket for each user's engine depends entirely on the engine's design. That's why it is strongly recommended that users check their engine's Illustrated Parts List and refer back to their owner's manuals before making any decisions. This air cleaner gasket is an original OEM part sourced directly from the manufacturer, Midwest Engines. It is sold individually.

Replacement screw for lawn and garden engines. Secures components and fastens parts throughout the engine assembly. Order a new one if lost or damaged.

Fuel filter for lawn and garden engines. Screens debris and contaminants from fuel supply. Replace when clogged or during seasonal maintenance.

Control wire casing for lawn and garden engines. Protects and guides throttle or choke control cables. Replace if cracked, split, or missing.

Control wire for lawn and garden engines. Connects controls to engine throttle or choke mechanisms. Replace if frayed, broken, kinked, or missing.

Sealing washer creates a leak-proof seal in your lawn and garden engine. Replace when worn or cracked to prevent oil or fuel leaks. Confirm fit.

Replace a cracked or damaged blower housing causing weak airflow or overheating. This durable plastic housing holds the fan and directs air intake. DIY-friendly repair.

This screw is designed to be used on all sorts of lawn and garden equipment. The metal screw is durable and attaches to the muff guard bracket to keep it in place and stable while the equipment is being used. This screw can become damaged through overuse or wear and tear. It can also break or become stripped, which will require it to be replaced.Visually inspecting the area with the muff guard bracket is connected to the rest of the equipment will give information about whether the screw is broken or damaged. The screws can also be cleaned to be more visible so small problems are easier to pick up on. Sometimes the screws can become loose, which is another situation where a replacement is needed. Simply use a screwdriver to take out the old screw and replace it with a new one.This screw is a genuine OEM replacement part that is directly sourced from the manufacturer. It comes as an individual part. The screw can be used on snowblowers, lawnmowers, lawn tractors, tillers, pressure washers, leaf blowers, edgers, generators, wood chippers, and log splitters made by MasterCut, Simplicity, MTD, Snapper, Lawn-Boy, Wheel Horse, Cub Cadet, Toro, Craftsman, and Briggs & Stratton.

This genuine OEM part is a rocker switch for lawnmower engines. A rocker switch is the component that allows the user to power the engine. If the rocker switch is no longer functioning and not turning the engine on and off as intended, it might need to be

Replacement mounting screw for lawn and garden engines. Secures engine components and panels. Needed when original hardware is stripped, missing, or damaged.

Replacement screw for lawn and garden engines. Secures components during assembly and operation. Order a new screw if the original is stripped or missing.

Engine won't start? A worn pawl friction plate in the starter assembly prevents cranking. This small engine part transfers power to the starter cup.

Replacement screw that secures the pawl friction plate in lawn and garden engines. Replaces lost, stripped, or damaged flange bolts on the recoil assembly.

Engine won't shut off when you turn the key? Replace your lawn mower's stop switch to restore safe engine control. Simple safety repair.

Replace your engine's choke and throttle shaft seal to prevent air leaks and maintain proper engine performance. Verify fit with your model number.

Fix misfiring, hard starting, or no spark issues with this spark plug boot. Connects spark plug to magneto on lawn mowers and small engines. Easy DIY fix.

This replacement friction spring is a genuine OEM part meant for any number of small appliance engines run using a starter rope. This spring absorbs large amounts of kinetic energy that could damage the starter rope pulley system. It helps keep the pulley

Rocker arm stud for lawn and garden engines. Secures the rocker arm to the cylinder head. Replace if stripped, broken, or missing for proper assembly.

Fix fuel leaks or prevent spills during storage with this engine fuel shut-off valve. Fits lawn mowers, generators, and pressure washers. Easy install.

Pre-cleaner filter wraps around your engine's air filter to trap large debris before it reaches the main filter. Replace when torn or clogged to maintain airflow and engine protection. Verify fit by model number.

Replacement mounting screw for lawn and garden engines. Secures engine components and brackets. Order when original is lost, stripped, or damaged.

Rocker cover protects the valve train components on your lawn and garden engine. Replace if cracked, damaged, or missing to prevent debris contamination.

This brush retainer is part of the starter motor on many types of lawn and garden machinery. It comes with both the retainer and a set of four brushes. The main job of the brush retainer is to hold a set of carbon brushes against the commutator bars located on the armature. If the brush retainer is worn, damaged, or improperly seated, it can cause problems with the equipment. The starter motor will not be able to get the proper amount of current from the battery.If the brush retainer might be causing problems, a visual inspection can be performed. A damaged brush retainer can wear down to the wire lead and become burned, pitted, or cracked. When the brush retainer is worn out, it can decrease engine performance, reduce braking, and cause the motor to lose power. This brush retainer is an authentic OEM replacement part sourced directly from the manufacturer. It is sold as an individual part. The retainer is made to be used with lawnmowers, snowblowers, tillers, and wood chippers created by Briggs & Stratton, Craftsman, Toro, Cub Cadet, Lawn-Boy, Snapper, MTD, and Simplicity.