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Thumbnail Filmstrip of 2004.5-2005 6.6L LLY Duramax High Pressure Fuel Pump Install Kit Alliant AP0128 Images
The Alliant Power AP0128 is a new high pressure fuel pump install kit for 2004–2006 GM LLY Duramax applications. Alliant’s Fuel Injection Pump Installation Kit supports fuel injection pump service by providing components used during pump installation.
Features & Benefits
- New Alliant Power High Pressure Fuel Pump Install Kit (Alliant P/N AP0128)
- Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
- Backed by Alliant Power’s 24-month, unlimited-mileage warranty
Application
- GMC Sierra 3500 / C4500 Topkick / C5500 Topkick (2004–2006)
- Chevrolet Silverado 3500 / Silverado 2500 HD (2005–2006)
- GMC Sierra 2500 HD (2005–2006)
- Chevrolet C4500 Kodiak / C5500 Kodiak (2004–2006)
- Chevrolet Express 2500 / Express 3500 (2006)
- GMC Savana 2500 / Savana 3500 (2006)
Always verify fitment against your VIN, engine, and OE part number before ordering.
Warranty: Alliant Power’s standard warranty: 24 months with unlimited miles/hours on installed parts (Alliant Power warranty policy, rev. Aug 2025).
The Alliant Power AP0128 is a new high pressure fuel pump install kit for 2004–2006 GM LLY Duramax applications. Alliant’s Fuel Injection Pump Installation Kit supports fuel injection pump service by providing components used during pump installation.
Features & Benefits
New Alliant Power High Pressure Fuel Pump Install Kit (Alliant P/N AP0128)
Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
Backed by Alliant Power’s 24-month, unlimited-mileage warranty
Application
GMC Sierra 3500 / C4500 Topkick / C5500 Topkick (2004–2006)
Chevrolet Silverado 3500 / Silverado 2500 HD (2005–2006)
GMC Sierra 2500 HD (2005–2006)
Chevrolet C4500 Kodiak / C5500 Kodiak (2004–2006)
Chevrolet Express 2500 / Express 3500 (2006)
GMC Savana 2500 / Savana 3500 (2006)
Always verify fitment against your VIN, engine, and OE part number before ordering.
Warranty: Alliant Power’s standard warranty: 24 months with unlimited miles/hours on installed parts (Alliant Power warranty policy, rev. Aug 2025).[...]
The Alliant Power AP0128 is a new high pressure fuel pump install kit for 2004–2006 GM LLY Duramax applications. Alliant’s Fuel Injection Pump Installation Kit supports fuel injection pump service by providing components used during pump installation.
Features & Benefits
- New Alliant Power High Pressure Fuel Pump Install Kit (Alliant P/N AP0128)
- Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
- Backed by Alliant Power’s 24-month, unlimited-mileage warranty
Application
- GMC Sierra 3500 / C4500 Topkick / C5500 Topkick (2004–2006)
- Chevrolet Silverado 3500 / Silverado 2500 HD (2005–2006)
- GMC Sierra 2500 HD (2005–2006)
- Chevrolet C4500 Kodiak / C5500 Kodiak (2004–2006)
- Chevrolet Express 2500 / Express 3500 (2006)
- GMC Savana 2500 / Savana 3500 (2006)
Always verify fitment against your VIN, engine, and OE part number before ordering.
Warranty: Alliant Power’s standard warranty: 24 months with unlimited miles/hours on installed parts (Alliant Power warranty policy, rev. Aug 2025).
Fits: Universal - 1/2 Inch Feed
California Restricted
Fits: LLY Duramax 2004.5-2005
California Restricted
Fits: LLY Duramax 2004.5-2005