This brake master cylinder cap is a perfect fit for 1999 - 2024 GMC/Chevrolet 1500 with Duramax engines. It's a direct replacement for GM OEM part numbers 20760280 and 22688449. The part numbers are WCF100216/WCF100215. Key features include a CNC machined billet cap (a real OEM replacement, not just a cover), a new diaphragm seal, made in the USA, available in black or clear anodized finish, and it can be installed in seconds.

Using this brake master cylinder cap is a breeze. First, make sure your vehicle's engine is off and it's parked safely. Then, simply remove the old cap and replace it with this new one. It should fit right in and take only seconds to install. When it comes to maintenance, keep an eye on the diaphragm seal. If you notice any signs of wear or damage, it might be time to replace it. Also, since it's made in the USA, you can expect high - quality materials, but try to keep it clean and protected from extreme conditions. Always double - check that it's tightly secured to prevent any fluid leaks.