This little rubber piece has a pretty simple job – it keeps oil in and keeps dirt and debris out. Specifically, it seals the space between the crankshaft – which is a major moving part inside your engine – and the engine block. It’s really about maintaining pressure and preventing leaks. Think of the crankshaft as the engine’s main power source – it turns with the pistons and gets everything moving. That crankshaft sticks out a bit where it connects to other parts, like the transmission. The seal sits right there, around where the crankshaft exits the engine. It's a critical part of the engine’s lower end. If this seal fails, you’re going to start seeing oil leaks. At first, it might just be a drip here and there, but it can quickly become a significant leak, leading to low oil levels and potential engine damage. That leaking oil can also sling onto other parts, damaging belts or even creating a fire hazard. It acts like a shield, preventing oil from escaping and gunk from getting in. You’ll notice if it goes bad – either a visible oil slick under your car, or you might smell burning oil. They’re relatively inexpensive to replace, so addressing it early saves a lot of headache and cost down the road. You can often find them on sites like Fixparts Online, along with all the other parts you might need for the job. Customer-approved reliability: Crankshaft Seal (MPN 40905101) includes a 12-month warranty!

About SWAG

SWAG specializes in precision-engineered replacement parts for steering, suspension, and engine components, ensuring reliability and long service life.

Why Choose SWAG?

• SWAG parts are made to the same high standards as the original parts your car came with, so you get reliable performance. • We offer a wide range of parts, covering many different car makes and models – chances are we have what you need. • SWAG parts are a smart choice for your wallet. You get quality without paying extra for a fancy name. • Professional mechanics trust SWAG. We’re a brand known for consistently delivering dependable parts. Performance you can rely on – SWAG parts from FixParts Online.