Product Description
FASS FASD08100G ADJUSTABLE DIESEL FUEL LIFT PUMP 100GPH FOR 1998.5–2004 DODGE 5.9 CUMMINS
The FASS FASD08100G is a Signature Series Adjustable diesel lift pump rated at 100 GPH with an adjustable 1–20 PSI range tailored to the 1998.5–2004 Dodge 5.9L Cummins (24-valve VP44 and 2003–2004 common-rail). It uses the same robust motor found in the Titanium Signature Series and adds a Boost Compensation Port plus a built-in fuel pressure gauge port for precise tuning.
Fitment & Notes
- Vehicle: 1998.5–2004 Dodge Ram with 5.9L Cummins.
- Output: 100 GPH; adjustable 1–20 PSI (set to your build’s needs).
- System type: Pump/system only — retains the factory fuel filter on these trucks.
- Ports: Boost compensation port; dedicated fuel pressure gauge port.
- Includes: All required mounting hardware for a clean, reliable install.
Installation & Manuals
Official FASS manuals: FASS Installation Manuals. Direct PDF for this model: FAS-D08-100G / FAS-D08-165G Installation Manual (PDF).
Cross-Reference & Related FASS Items (CPP Diesel)
- Same-platform Adjustable upgrades: FASD08165G (165GPH), FASD08250G (250GPH), FASD08290G (290GPH).
- Titanium Signature alternative: TSD08100G (100GPH).
- Related accessory: STK1002 Suction Tube Kit.
FAQ
Does this pump replace my factory fuel filter?No. This Adjustable Series system retains the factory fuel filter on these trucks.
What fuel pressure should I run on a VP44 or common-rail 5.9L?
The system adjusts 1–20 PSI. Target pressure depends on tuning and components—verify with a gauge and your tuner’s recommendations.
Is there a boost compensation feature?
Yes. The built-in Boost Compensation Port helps maintain pressure under wide-open throttle.
What comes in the box?
Complete pump assembly with mounting hardware and ports for boost compensation and an external fuel pressure gauge.
Specifications for Fass FASD08100G
| Brand | FASS Fuel Systems |
| Part Number | FASD08100G |
| Flow / Pressure | 100 GPH; adjustable 1–20 PSI |
| Engine / Years | Dodge 5.9L Cummins (1998.5–2004) |
| Key Features | Boost compensation port; built-in gauge port; Whisper Technology |
| UPC | 850044137091 |
| GTIN | 0850044137091 |
| Package Dimensions | 14.00" W × 11.50" H × 18.00" L |
| Shipping | Free Shipping (Continental U.S.) |
| Prop 65 | Yes — Cancer and Reproductive Harm |
