Product Description
FASS STK1003 DIESEL FUEL 5/8 IN FUEL MODULE SUCTION TUBE KIT INCLUDES BULKHEAD FITTING
The FASS STK1003 adds a high-flow 5/8" convoluted suction tube inside the factory fuel module and includes a machined 6061-T6 billet aluminum bulkhead fitting. Designed for use with FASS Titanium / Titanium Signature Series systems, it provides both a suction pickup and a return port to improve volume and help eliminate common 1/4-tank issues.
Fitment & Notes
- Applications: Universal — Ford Powerstroke, GM Duramax, and Dodge/RAM Cummins fuel modules.
- Important: Will not work on 2003–2004 Dodge applications.
- Use case: Ideal companion to FASS Titanium Signature Series lift pump installs to ensure unrestricted supply/return at the tank.
Installation & Manuals
Full instructions are available on the FASS manuals page: FASS Installation Manuals. Direct PDF for this kit: STK-1003 / STK-1003B Installation Manual (PDF).
Specifications for Fass STK1003
| Brand | FASS Fuel Systems |
| Part Number | STK1003 |
| Material | 6061-T6 billet aluminum bulkhead fitting; Viton convoluted suction tube |
| Ports | 5/8" suction tube in factory module + dedicated fuel return port |
| Compatibility | For use with FASS Titanium / Titanium Signature Series systems |
| UPC | 850044106899 |
| GTIN | 0850044106899 |
| Package Dimensions | 16.00" W × 4.00" H × 10.00" D |
| Shipping | Calculated at checkout (small parcel) |
| Prop 65 | Yes — Cancer and Reproductive Harm |
