Billet aluminum MAF bung for 2011-2016 LML Duramax. The bottom side has a 4.5″ radius machined to fit any 4″ or 5″ tube and includes 2 stainless socket head mounting screws for the MAF sensor.
Our Billet Aluminum Bottom Sump with Integrated Fuel Return System completely eliminates the need to run the return of your aftermarket fuel pump to the top of the tank or cut into the fuel filler neck, therefore cutting install time tremendously!
This sump is designed to help ease the install of 2 lift pumps. With its 2 suction ports, installing 2 lift pumps is a breeze! It is based on our proven clamp in design that we use on our integrated return sump. We include 1/2″ push-lok fittings and a hole saw.