These little guys are basically seals. They create a watertight barrier where the rocker cover meets the cylinder head. They’re made of a rubber or synthetic material designed to compress and fill any tiny gaps, preventing leaks. They’re simple, but really important for keeping everything sealed up. Think of the rocker cover as the lid on a very important part of the engine. Under that cover are things like the camshaft and valve train – parts that need lubrication with engine oil. This O – Ring sits right where the cover bolts down, ensuring that oil stays inside where it’s supposed to be, and dirt and debris stay out. You’ll usually find one, maybe several, around the perimeter of where the rocker cover meets the head. If this O – Ring fails, you’ll probably notice an oil leak. Even a small leak can cause a mess and, over time, lead to bigger problems. Oil leaks are never good news, as they can affect engine performance and even pose a fire risk. Replacing a worn or damaged O – Ring is a relatively inexpensive fix that can save you a lot of headaches down the road. They don't last forever, the rubber degrades over time from heat and oil exposure. We carry a lot of these at Fixparts Online, and it’s a good idea to have one on hand if you’re already working on the valve train. You’ll notice if it’s failing because you’ll see oil around the rocker cover gasket area. Smart choice: O-Ring (MPN F00VD38010) is backed by a 12-month warranty!

About Bosch

With a heritage of innovation, Bosch provides dependable and efficient automotive components that set industry standards.

Why Choose Bosch?

• Bosch parts are known for lasting a long time, so you won’t have to replace them often. • They perform reliably, helping to keep your vehicle running smoothly and safely. • Bosch invests a lot in research and development, meaning you’re getting the latest technology. • Mechanics trust Bosch, and that’s a good sign of quality and performance you can depend on. FixParts Online – Your Trusted Source for Quality Bosch Auto Parts.