2017 - 2025 6.6L/3.0L GM Duramax Billet Aluminum Engine Oil Filler Cap

Now you can dress up your truck’s engine bay and virtually eliminate oil cap blow-off. This CNC machined, black anodized oil filler cap features an easy grip to assist you when installing and removing between tight engine spaces. It’s also been designed with a secure cam-lock fit to match your OEM or aftermarket filler neck and ensure it stays in place. Includes Viton O-ring.

6.6L OEM Part #12677347 2017-2024

3.0L OEM Part #55510927 2020-2024