Product Description
FASS STK5500BO DIESEL NO DROP FUEL SUMP KIT (BOWL ONLY)
The FASS STK5500BO “No Drop” Fuel Sump (Bowl Only) relocates fuel pickup to the lowest point of the tank to help eliminate the common 1/4-tank starvation issue and ensure a steady fuel supply for high-demand diesel builds. Its single-hole design simplifies installation—no need to drop the tank—and it’s an ideal companion for FASS Titanium and Titanium Signature Series lift pumps.
Fitment & Notes
- Universal: Works with most Ford Powerstroke, GM Duramax, and Dodge/Ram Cummins diesel tanks (check tank clearance before drilling).
- Bottom-draw pickup: Consolidates fuel to a central low point for consistent supply.
- Porting: 1/2" NPT suction port (return port available on full kits—see cross-references).
- Material: 6061-T6 billet aluminum bowl with gasketed, sealed design.
- Pairing: Commonly paired with FASS suction tube and Titanium/Titanium Signature Series systems.
Installation & Manuals
Find the official FASS installation manuals here: FASS Installation Manuals (search “STK-5500” for sump kit guidance).
Cross-Reference & Related FASS Items (CPP Diesel)
- STK5500B Sump + Suction Tube Kit — full kit with suction tube/return hardware.
- STK1002 5/8" Suction Tube Kit (Bulkhead) — popular pairing for bottom draw.
- STK1003 5/8" Fuel Module Suction Tube Kit — draw from factory basket.
- STK1003B 5/8" Suction Tube Upgrade (for STK1002) — upgrade line size/route.
FAQ
Do I have to drop the tank to install the STK5500BO?No—this is a “No Drop” design that installs through a single hole in the bottom of the tank. Always follow the FASS manual and safety procedures.
Will this fix the 1/4-tank fuel starvation issue?
Yes—by drawing fuel from the lowest point of the tank, the sump helps eliminate common 1/4-tank pickup problems on many diesel trucks.
What parts do I need besides the bowl?
The bowl-only kit provides the sump bowl. Pair it with a suction tube kit (STK1002) or choose the complete STK5500B kit if you want suction/return hardware included.
Is it compatible with FASS Titanium/Titanium Signature Series pumps?
Yes—this sump is frequently paired with FASS Titanium and Titanium Signature Series lift pumps for consistent fuel supply.
Specifications for Fass STK5500BO
| Brand | FASS Fuel Systems |
| Part Number | STK5500BO |
| Type | No Drop Fuel Tank Sump (Bowl Only) |
| Ports | 1/2" NPT suction outlet |
| Material | 6061-T6 billet aluminum |
| Compatibility | Universal diesel applications; commonly paired with FASS Titanium/Titanium Signature systems |
| UPC | 850044106943 |
| GTIN | 0850044106943 |
| Package Dimensions | ~6" × 6" × 6" (typical boxed) |
| Shipping | Ships via standard ground (contiguous U.S.) |
| Prop 65 | Yes — Cancer and Reproductive Harm |
