2004.5-2005 Chevy/GMC 6.6L Duramax LLY CP3 Pump & EGR Valve Installation Kit | Alliant Power AP0128 New
This is the Alliant Power AP0128, a new high-pressure fuel pump (CP3) and EGR valve installation kit. Alliant lists it for the 2004.5 to 2005 6.6L Duramax LLY in Silverado and Sierra trucks.
Alliant’s picture of the kit shows the gaskets and seals it holds. It covers the pump and the EGR valve, as Alliant names it.
It goes with the LLY CP3 pumps on this site, listed under Related Parts.
Confirm Fitment Before You Order
Alliant lists this kit for the 2004.5 to 2005 Duramax LLY only. Check the engine code on your truck (8th digit of the VIN) before you order. Call us if you are not sure. Call 530-668-0818 and we will confirm the exact match at no charge before anything ships.
Specifications
| Part number | AP0128 |
| Brand | Alliant Power |
| Condition | New, genuine, in original packaging |
| Warranty | Manufacturer’s own warranty applies. Call us and we handle the claim. |
| Type | High-pressure fuel pump (CP3) and EGR valve installation kit |
| Engine | 6.6L Duramax LLY |
| Model years | 2004.5 to 2005 |
| Trucks | Chevrolet Silverado and GMC Sierra, as Alliant lists it |
| Shipping weight | 0.2 lb |
Fits / Applications
- Chevrolet Silverado and GMC Sierra 6.6L Duramax LLY, 2004.5 to 2005
- GM 2004½-2005 6.6L LLY Duramax Silverado and Sierra
Follow the workshop manual for your engine when you fit this part.
Part Numbers & Cross Reference
Alliant Power AP0128
Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.
Frequently Asked Questions
Will the AP0128 fit my truck?
Alliant lists it for the 2004.5 to 2005 6.6L Duramax LLY in Silverado and Sierra trucks. Call 530-668-0818 with your VIN and we will confirm it.
Which pump does it go with?
The LLY CP3 pump. Our LLY pumps are listed under Related Parts on this page.
What is in the kit?
Alliant’s picture shows the gaskets and seals in the kit. Call us if you need the full list.
Related Parts
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. Call us with your engine serial, VIN or build date before you order and we will help you confirm fitment, so the right part arrives the first time.
UPS to all 50 states, including Alaska and Hawaii. Your rate shows at checkout. Questions on fitment? Call 530-668-0818.
Pricing covers the unit itself. Any applicable sales tax is additional; shipping is calculated at checkout. 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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