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Briggs and Stratton 21A900 Series Parts & Models
Popular Briggs and Stratton 21A900 Series Parts

This is an OEM replacement part and is sold individually.
The purpose of this spark plug is to deliver an electric current from an ignition system to the combustion chamber of a gas fueled engine, igniting the air fuel mixture by the spark.
Over time a Spark Plug will become fouled because the air/fuel ratio may be set wrong, worn piston rings, carbon build up, and other factors.
It is best to replace a dirty spark plug, rather than trying to clean it.
It is important to gap your spark plug according to the owners manual of your product.

This is a genuine OEM replacement part. This part is made out of plastic. The ratchet pawl is necessary to engage the recoil starting system to the engine. If the pawl is worn the recoil can slip and make it difficult to start the engine.

This is a Genuine OEM replacement part for use with a variety of Lawn and Garden Equipment. This item is made out of Metal and Rubber Material. It is Sold Individually. The purpose of this part is to create an air tight Seal so the oil does not leak from Crankcase.
When replacing this you would need a Set of Wrenches, Pliers and a Screwdriver.
You would need to remove the PTO shaft assembly from the unit. Then you want to remove the cotter key and pull the pin out. This will allow all the guts to slide off of the shaft.

This is a genuine OEM replacement part is made out of Plastic, it is sold individually. It is used on a variety of Engines and Motors. The purpose of it is to filter out dirt and other debris from contaminating the carburetor. It will over time become clogged and restrict the fuel getting to the carburetor so it will need to be replaced. This is a 75 micron fuel filter.

Genuine OEM replacement Rocker Cover Gasket used on Lawn and Garden Equipment Engines. This part is sold individually. Over time gaskets may dry out or crack and would develop leaks, especially during cold winter period. This parts helps to keeps particulates out of the engine while providing an air-tight seal to keep the oil in.

This genuine OEM oil filter helps to remove harmful contaminants from engine oil. It is sold Individually. Used on select Intek and Vanguard OHV engines. This part maintains optimum performance of your engine in accordance with applicable EPA emissions regulations. It is recommended to replace an Oil Filter at least once a season.

This is an OEM replacement part and is sold individually.
The purpose of this spark plug is to deliver an electric current from an ignition system to the combustion chamber of a gas fueled engine, igniting the air fuel mixture by the spark.
Over time a Spark Plug will become fouled because the air/fuel ratio may be set wrong, worn piston rings, carbon build up, and other factors.
It is best to replace a dirty spark plug, rather than trying to clean it.
It is important to gap your spark plug according to the owners manual of your product.

This is a genuine OEM replacement part. This part is made out of plastic. The ratchet pawl is necessary to engage the recoil starting system to the engine. If the pawl is worn the recoil can slip and make it difficult to start the engine.

This is a Genuine OEM replacement part for use with a variety of Lawn and Garden Equipment. This item is made out of Metal and Rubber Material. It is Sold Individually. The purpose of this part is to create an air tight Seal so the oil does not leak from Crankcase.
When replacing this you would need a Set of Wrenches, Pliers and a Screwdriver.
You would need to remove the PTO shaft assembly from the unit. Then you want to remove the cotter key and pull the pin out. This will allow all the guts to slide off of the shaft.

This is a genuine OEM replacement part is made out of Plastic, it is sold individually. It is used on a variety of Engines and Motors. The purpose of it is to filter out dirt and other debris from contaminating the carburetor. It will over time become clogged and restrict the fuel getting to the carburetor so it will need to be replaced. This is a 75 micron fuel filter.

Genuine OEM replacement Rocker Cover Gasket used on Lawn and Garden Equipment Engines. This part is sold individually. Over time gaskets may dry out or crack and would develop leaks, especially during cold winter period. This parts helps to keeps particulates out of the engine while providing an air-tight seal to keep the oil in.

This genuine OEM oil filter helps to remove harmful contaminants from engine oil. It is sold Individually. Used on select Intek and Vanguard OHV engines. This part maintains optimum performance of your engine in accordance with applicable EPA emissions regulations. It is recommended to replace an Oil Filter at least once a season.