Description
Overview
The FASS Fuel Systems Billet L5P 2017-2024 Duramax Fuel Filter Cap (Part No. BFC1001K) is a precision-engineered upgrade for owners who are tired of dealing with the fragile OEM plastic cap. On the L5P Duramax, that factory plastic fuel filter cap is notoriously prone to rounding off during a fuel filter replacement and cracking under extreme cold-weather conditions. This billet aluminum cap solves both problems with a component engineered and machined in the USA to the quality standard FASS Fuel Systems is known for.
Machined from solid 6061 billet aluminum, this diesel fuel filter cap directly replaces the cheap OEM plastic housing cap while keeping the same 36mm socket interface, so removal and installation follow the process you already know. Whether you’re running the factory plastic fuel filter housing or a FASS L5P Drop-In Series system, this cap drops right in and elevates the durability of your entire fuel filter setup.
Key Benefits
Changing the fuel filter and draining water from the separator becomes far easier thanks to the integrated billet aluminum drain valve. The valve allows for tool-free draining, so a routine fuel filter change or water-separator service on your L5P Duramax is cleaner and quicker. For those who want to route drainage away from the engine bay, the 1/8″ female NPT port on the billet drain valve accepts a barb fitting for a custom setup.
- Machined in the USA from 6061 billet aluminum for lasting strength
- Direct replacement for the crack-prone, easily-rounded OEM plastic fuel filter cap
- Billet aluminum drain valve enables tool-free draining during every fuel filter replacement
- Uses the same 36mm socket as the factory cap for a familiar install
- Compatible with the factory plastic fuel filter housing and FASS L5P Drop-In Series systems
- 1/8″ female NPT port on the drain valve accepts an optional barb fitting
Why Upgrade
The OEM cap’s plastic construction is the weak link in an otherwise robust diesel fuel filter system. When you round off or crack that cap, you’re facing downtime and added fuel filter replacement cost. By stepping up to a billet aluminum cap, you protect the fuel filter housing, simplify the routine of changing the fuel filter, and gain a component built to survive repeated service intervals and harsh winters.
Fitment
This billet fuel filter cap is engineered specifically for the 2017-2024 L5P Duramax. It is sold as each (Each) and fits Truck/SUV applications running the factory plastic fuel filter housing or the FASS L5P Drop-In Series. Confirm your L5P Duramax application and choose this cap to give your fuel filter system the durability the OEM part lacks.
