Atlas 188-0001 Universal Fuel Tank Sump with Fuel Return

Solve low-fuel pickup issues and get consistent fuel delivery — even when your tank drops below 1/4 full. The Atlas Diesel 188-0001 Fuel Tank Sump with Integrated Return is a premium billet aluminum solution designed for diesel trucks running aftermarket lift pumps like FASS, AirDog, and similar systems.

This one-hole design lets you install a true sump at the lowest point of the tank without dropping the tank. It creates a dedicated fuel reservoir that keeps your lift pump supplied during hard acceleration, braking, cornering, or steep inclines — eliminating the starvation problems common with factory pickups or simple draw straws.

Key Features & Benefits

• One-hole, no-tank-drop installation — Requires only a single 3" hole in the bottom of the tank
• Billet aluminum construction — Heavy-duty billet sump body and inner clamping ring for superior strength and sealing
• Integrated fuel return port — Plumb your FASS/AirDog return line directly into the sump (no need to tap the filler neck)
• Fuel stand pipe separator — Keeps aerated/hot return fuel separate from the clean feed supply to prevent turbulence and vapor lock issues
• Double O-ring + double-bolt design — Superior sealing and clamping force compared to many single-bolt competitors (confirmed by customer feedback)
• Complete installation kit — Includes everything you need to get the job done right the first time

What's Included

• Billet aluminum sump
• Billet aluminum inner clamping ring
• 1/2" feed and return fittings
• Installation hardware
• O-rings and sealing washers
• 3" hole saw
• Fuel stand pipe separator

Why Choose the Atlas 188-0001?

This sump is ideal for high-performance diesel builds where reliable fuel delivery under all conditions is critical. Whether you're running a modified Cummins, Duramax, or Powerstroke, this sump gives your aftermarket fuel system the consistent, unrestricted fuel supply it needs — even at low tank levels.

Universal fitment (works with most diesel fuel tanks — some cutting/drilling required) 1-Year Warranty

Perfect for: FASS, AirDog, and other aftermarket diesel fuel systems that benefit from a dedicated sump with return capability.