Dodge Ram 5.9L Cummins Fuel Transfer Pump Kit | Alliant Power AP4089602, 2003–2004
New fuel transfer (lift) pump kit for early common-rail 5.9L Cummins Rams. The lift pump is cheap insurance on these trucks: it feeds the CP3, and when it fades quietly, the CP3 pays the bill. If your 03–04 is losing rail pressure under load, check this first.
| Part number | AP4089602 |
| Brand | Alliant Power |
| Condition | New |
| Application | 2003–2004 Dodge Ram 2500/3500 5.9L Cummins (early common-rail) |
| Warranty | Factory warranty applies; confirmed with your quote |
| Core charge | None. This is a new unit. |
Fits / Applications
- 2003–2004 Dodge Ram 2500/3500 5.9L Cummins trucks
- Replaces the failure-prone factory lift pump feeding the CP3 — weak supply pressure starves the CP3 and shows up as low-power complaints and eventual pump damage
Cross Reference: Part Numbers This Covers
4089602
Why Buy From Valley Fuel Injection
We are a diesel fuel-injection and turbocharger shop in Woodland, CA — rebuilding pumps, injectors and turbos on our own benches since 1993 — not a drop-ship storefront. When you call, you talk to the people who test these units. We verify fitment against your engine serial number before anything ships, so the right part arrives the first time.
We test CP3 supply and rail-pressure complaints in-house — injection services.
Ready to order online and ships free ground in the lower 48 states. Questions on fitment? Call 530-668-0818.
Pricing covers the unit itself. Any applicable sales tax is additional; ground shipping in the lower 48 is free. Buying tax-exempt? Qualifying diesel repair shops, fleets, farms, and agricultural operations can purchase tax-free. Set up tax-exempt purchasing once and every qualifying order is tax-free going forward.
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