Parts for Briggs & Stratton 091212-1237-E1: Camshaft, Crankcase Cover / Sump, Crankshaft, Piston / Rings / Connecting Rod Parts

This oil seal is a common part engineered to work in engines that power generators, vacuum cleaners, snowblowers, leaf blowers, mowers, and other small engine applications. The seal sits between the crankcase and the crankshaft. It is designed as a barrier to prevent oil leakage and to stop contaminants from leaving the crankcase. When the gasoline engine exhibits diminished power, and especially if it begins to emit oily gray or bluish smoke, there is a good chance the oil seal needs to be replaced. In order to replace the faulty seal, begin by removing the starter housing and taking off the nut that holds the starter wheel to the main shaft. The user will find the old seal on this shaft. Remove it and install the new seal, pushing it into place with the edges of a socket, then tapping it securely into place with a hammer. When choosing a replacement seal, remember to use an OEM genuine replacement part that is guaranteed to match the specs for the original part. This will ensure a quality match and long replacement life. This seal is compatible with Toro, Lawn-Boy, and Briggs & Stratton engines.

This replacement crankcase gasket is a genuine OEM part designed for a range of different small gas-powered lawn appliance engines. It is commonly found in tillers and lawn mowers. The crankcase is a housing for the crankshaft, which receives reciprocal motion from the pistons and transforms it into rotation motion. This gasket helps seal the crankcase to create an airtight chamber and prevent oil from leaking so that the crankshaft can operate smoothly. As the engine runs, it produces a lot of heat and gases that eventually wear on gaskets. Over time, all of this stress can cause a gasket to degrade and break its seal. If this happens, oil will leak from the crankcase, the engine will easily overheat, and greyish white smoke will visibly blow out from the exhaust pipe. Replacing a crankcase gasket will require disassembling much of the engine, as it is an internal part, so we recommend following the owner's manual or consulting the manufacturer's website for instructions. This part is a high-quality replacement gasket manufactured to exactly match the specifications of the original part. It is compatible with Toro and Briggs & Stratton engines and ships individually.

This oil seal is a common part engineered to work in engines that power generators, vacuum cleaners, snowblowers, leaf blowers, mowers, and other small engine applications. The seal sits between the crankcase and the crankshaft. It is designed as a barrier to prevent oil leakage and to stop contaminants from leaving the crankcase. When the gasoline engine exhibits diminished power, and especially if it begins to emit oily gray or bluish smoke, there is a good chance the oil seal needs to be replaced. In order to replace the faulty seal, begin by removing the starter housing and taking off the nut that holds the starter wheel to the main shaft. The user will find the old seal on this shaft. Remove it and install the new seal, pushing it into place with the edges of a socket, then tapping it securely into place with a hammer. When choosing a replacement seal, remember to use an OEM genuine replacement part that is guaranteed to match the specs for the original part. This will ensure a quality match and long replacement life. This seal is compatible with Toro, Lawn-Boy, and Briggs & Stratton engines.

This is a genuine replacement oil fill cap that is found on many lawn and garden engines. The oil fill cap is responsible for securing the oil dipstick and fill tube. This small plastic plug screws into the oil fill tube with plastic threads and secures the oil, keeping it from leaking and providing the appropriate engine pressure. Over time, this small plastic piece can become worn, corroded, damaged, or even lost, which will require a full replacement. Without an oil fill cap, the pressure cannot be maintained in the engine and the oil could spill out of the machine. This genuine OEM oil fill cap is manufactured by Briggs & Stratton to exact standards. It is compatible with engines and equipment from this brand, as well as those from Toro, Snapper, and Vanguard. The oil fill cap is sold as an individual part and does not include the dipstick or any other parts and accessories. It is a good idea to inspect caps and other elements when performing maintenance to ensure proper operation. When replacing the filler cap, no tools are required, but the engine should be cool before doing any kind of work.

The flywheel key is the component on outdoor equipment that keeps the flywheel connected to the crankshaft. Over time, this key may become damaged or broken, particularly if the engine experiences a forceful stop, like hitting a large stationary object. If the flywheel key breaks, the engine will not start. A slightly damaged flywheel key is noticeable through symptoms like misfiring, backfiring, or having no power. If any of these are occurring, the flywheel key should be replaced to prevent complete engine failure.A flywheel puller tool is required for this repair. Make sure the engine is cool before working on the flywheel. Wear safety gear, including gloves and eye protection. Disconnect the spark plug and remove the blower housing. Remove the flywheel mounting nut and set it aside. Take the recoil starter cup off the mower. Use the flywheel puller to remove the flywheel and access the flywheel key. Remove the broken flywheel and replace it with the new flywheel. Reverse the steps to put the mower back together.This flywheel key is made of an aluminum alloy and is sold as an individual part. It is designed for use in lawnmowers, lawn tractors, and other small engines manufactured by Briggs and Stratton, Toro, Lawn-Boy, Simplicity, MTD, and others.

This authentic OEM set of standard replacement rings attach to the pistons of a combustion engine and act as a seal to keep gas from escaping. If gas escapes from the piston, there will not be enough pressure to drive the piston upwards. Piston rings also help to transfer heat away from the piston so that the engine does not overheat and scrape away oil that's built up in the combustion chamber. These rings take a lot of abuse both from scraping and heat, so over time they may wear out or break. If piston rings break, the engine will produce low acceleration because the pistons cannot push the crankshaft. Other signs include greyish white smoke and built up oil. To replace a piston ring, first remove the pistons from the engine. These high-quality replacement rings are sourced from their original manufacturer and will work with Toro and Briggs & Stratton engines. This set includes three rings and no other additional hardware.

This part is a replacement connecting rod. This is a genuine OEM part made by Midwest Engine and has been sourced directly from the manufacturer. This part can be used to replace a defective or broken connecting rod in outdoor power equipment. This part connects the crankshaft in the equipment's engine to the piston. It is essential for proper functionality and will need to be replaced if broken, faulty, corroded, or ineffective in any way. When working on or near an engine, it's important to ensure that the equipment is powered off and completely cool before beginning any repairs. For more accurate information on how and where to place this connecting rod, the appropriate owner's manual and equipment diagrams should be referred to. As an authentic replacement part, this connecting rod is suitable for use on outdoor power equipment manufactured by Midwest Engine, Briggs and Stratton, and other brands. Please note that this is a genuine part made of high-quality, durable metal and is sold individually.

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.