This little ring creates a tight, airtight seal between the oil filter and the engine. It stops oil from leaking out around the filter once it's installed. It’s pretty simple, really – just a rubber gasket, but a crucial one. Think of it as the final barrier, the thing that absolutely guarantees oil stays inside your engine where it needs to be. It sits right where the oil filter screws onto the engine block. Without it, you’d have oil spraying everywhere, and that's definitely not good. It acts like a shield protecting your engine from a messy, and potentially damaging, oil leak. Honestly, it’s a small part that prevents a big problem. If this thing fails, you'll notice if you have an oil leak pretty quickly—usually a noticeable drop in oil pressure, or just oil visible around the filter itself. Losing oil pressure is obviously terrible for your engine, and even a small leak can cause a mess and eventually lead to more serious issues. It’s cheap insurance, and because it’s part of regular service, it’s smart to replace it every time you change your oil filter. You can find these seal rings pretty easily—we have a good selection at Fixparts Online, of course—and it’s a little thing that can save you a lot of trouble down the road. Backed by trust: Seal Ring (MPN A0089977045) comes with a 12-month warranty!

Why Choose Mercedes-Benz Trucks?

• Keep your truck running its best with parts made specifically for your Mercedes-Benz. They’re designed to work together for top performance and reliability. • Genuine Mercedes-Benz parts last longer and perform better than aftermarket options, saving you money on repairs in the long run. • We have a huge selection of parts available, and getting what you need is fast and easy. • Trust the brand known for quality and innovation. Using genuine parts helps maintain your truck’s value. FixParts Online – Your Trusted Source for Quality Mercedes-Benz Trucks Auto Parts.