ZHSYMX Fuel Tank Sump Kit for Diesel Trucks — T6 Billet Aluminum, Integrated Return & 3" Hole Saw (Cummins/Duramax/Powerstroke)

ZHSYMX Fuel Tank Sump Kit is a billet-aluminum install kit that adds an integrated return, stand pipe separation and a 3" hole saw, enabling easy no-drop installation for diesel trucks using AirDog or FASS pumps.

Designed for Cummins, Duramax and Powerstroke diesel pickups that run AirDog or FASS lift pumps, this sump kit streamlines fuel pickup and return plumbing without removing the tank. Machined from T6 billet aluminum, it includes a built-in fuel return path and 1/2" fittings so you can separate feed and return lines cleanly. The included 3" hole saw and clear installation design make it a practical retrofit for stock and many aftermarket tanks, though care is required to avoid debris in the tank after drilling.

How does this sump kit keep feed and return fuel separate?

The kit uses an internal stand pipe and a dedicated return port so returned fuel doesn’t mix at the pickup point. That layout reduces aeration and ensures the lift pump draws from the deepest fuel, while return flow exits through its own passage.

• Integrated stand pipe isolates pickup from return fuel
• Dedicated return port built into the billet housing
• 1/2" fittings sized to match common AirDog and FASS plumbing

What makes installation faster or safer than a tank-drop job?

This kit is engineered for no-tank-drop mounting: the 3" hole saw included allows access through the top of the tank and the billet flange secures the pickup without full removal. That reduces labor, trimming of straps, and exposure to fuel, but installers must clean the tank of metal and debris after drilling to protect pumps and filters.

• Includes 3" hole saw for top-access installation
• Flanged billet design bolts to the tank for a sealed fit
• Eliminates the need to lower the tank in most applications

Will this work with my diesel truck and pump setup?

The ZHSYMX sump is compatible with diesel trucks using AirDog or FASS lift pump systems and common diesel engine platforms such as Cummins, Duramax, and Powerstroke. It fits many stock and aftermarket tanks, but verify tank depth, top access clearance, and return routing before ordering.

• Made to interface with AirDog and FASS fuel pumps
• Compatible with Cummins, Duramax, Powerstroke trucks
• Works with many stock and aftermarket fuel tanks—confirm fitment

What durability and warranty protections are included?

Constructed from aircraft-grade T6 billet aluminum, the housing resists corrosion and mechanical wear compared with stamped components. ZHSYMX backs the assembly with a one-year warranty to cover manufacturing defects under normal use.

• T6 billet aluminum resists corrosion and fatigue
• Precision-machined ports and 1/2" fittings for secure connections
• 1-year warranty against manufacturing defects

Who this is for: This sump kit is aimed at diesel truck owners, technicians and performance shops upgrading or replacing fuel pick-up hardware on trucks fitted with AirDog or FASS pumps. It’s especially useful for anyone wanting a sealed, billet mount solution that avoids dropping the tank and provides a clean, separate return path. If you plan to run off-road in extreme low-clearance situations or cannot ensure debris-free installation, consider alternate mounting or professional assistance to avoid pump contamination.