Parts for Briggs & Stratton 31R577-0010-B1: Gasket Set - Engine, Carburetor, Valve Parts

Prevents oil leaks around the crankshaft in small gas engines. Replace if oil seeps from the bottom of the engine. Verify fit with your model number.

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.

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.

Fix oil leaks and overheating with this engine oil seal. Creates a tight seal around the crankshaft to protect oil flow. Basic hand tools needed.

Intake gasket seals the connection between carburetor and engine block. Replace if you notice air leaks, rough idle, or poor performance. Confirm fit with your engine model number.

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.

Engine flooding or not starting? This metal float needle valve regulates fuel flow in your carburetor. Controls gas intake and outflow in the fuel bowl.

Fix rough idle, hard starting, or stalling issues with this carburetor overhaul kit. Includes gaskets, seals, and components to restore fuel delivery.

When the fuel in a small, gasoline-powered engine moves up the fuel line, it must be mixed perfectly with air and together burn in just the right mixture and amount in order for engines to function properly. Because too much gas might be coming into the carburetor or because there might be a need for more gasoline than can readily move up the fuel line, the carburetor has a small device called the float bowl. The float bowl has a ready supply of gasoline for use as needed by the carburetor. To keep the gasoline in check while all this is happening, a device called the float bowl gasket keeps all the elements separate. With use and age, sometimes these gaskets crack or grow brittle and must be replaced. This causes air to leak into the mix and the engine will not operate smoothly. Replace this gasket with a genuine OEM replacement part like this one, manufactured to be exactly like the factory original that is being replaced. This part is compatible with engines sold by Toro, Simplicity, MTD, Briggs & Stratton, and Cub Cadet. Part sold 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.

Exhaust gasket seals between engine and exhaust system on riding mower tractors. Replace if you notice exhaust leaks or during engine maintenance.

Fix oil leaks from your rocker cover with this valve cover gasket. Creates an air-tight seal between engine and valve cover. Easy DIY replacement part.

This is a replacement valve gasket set that can be used with a range of different types of lawn and garden equipment that have valves. The gaskets are an important part of these machines. They will help to distribute pressure more evenly while providing an air-tight seal for the valves. This ensures there are no leaks. Gaskets can start to wear down and become brittle the longer they have been used. Some may crack, or they may not fit properly when trying to reassemble parts of the engine. This can cause air to get into the valves. In those cases, it is important to buy quality gaskets as replacements. When making repairs, the owner should make sure they are using the correct gaskets on the right parts in their engine to ensure they work correctly. The valve gasket set is an authentic OEM replacement part. It comes with several different types and sizes of gaskets for use with lawn mowers, snowblowers, and other small engines. The gaskets are compatible with Briggs & Stratton, Toro, Cub Cadet, and Simplicity.

Seals and protects engine connections to prevent oil leaks. Replace when cracked, brittle, or leaking. Verify fit with your engine model number.