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Thumbnail Filmstrip of 2001-2005 6.6L LB7 / LLY Duramax Replacement Water Pump Alliant AP63562 Images
The Alliant Power AP63562 is a new replacement water pump for 2001–2005 GM LB7/LLY Duramax applications. Alliant’s Engine Water Pump circulates coolant through the engine and cooling system.
Features & Benefits
- New Alliant Power Replacement Water Pump (Alliant P/N AP63562)
- Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
- Direct replacement for 19113733 / 19168888 / 97216136
- Backed by Alliant Power’s 24-month, unlimited-mileage warranty
Application
- Chevrolet Silverado 3500 / Silverado 2500 HD (2001–2005)
- GMC Sierra 3500 / Sierra 2500 HD (2001–2005)
Always verify fitment against your VIN, engine, and OE part number before ordering.
Cross-Reference / Replaces
- General Motors: 19113733, 19168888, 97216136
- ACDelco: 251-674, 251-723, 252-383, 252-838
- Alliant Power: AP63562
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 AP63562 is a new replacement water pump for 2001–2005 GM LB7/LLY Duramax applications. Alliant’s Engine Water Pump circulates coolant through the engine and cooling system.
Features & Benefits
New Alliant Power Replacement Water Pump (Alliant P/N AP63562)
Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
Direct replacement for 19113733 / 19168888 / 97216136
Backed by Alliant Power’s 24-month, unlimited-mileage warranty
Application
Chevrolet Silverado 3500 / Silverado 2500 HD (2001–2005)
GMC Sierra 3500 / Sierra 2500 HD (2001–2005)
Always verify fitment against your VIN, engine, and OE part number before ordering.
Cross-Reference / Replaces
General Motors: 19113733, 19168888, 97216136
ACDelco: 251-674, 251-723, 252-383, 252-838
Alliant Power: AP63562
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 AP63562 is a new replacement water pump for 2001–2005 GM LB7/LLY Duramax applications. Alliant’s Engine Water Pump circulates coolant through the engine and cooling system.
Features & Benefits
- New Alliant Power Replacement Water Pump (Alliant P/N AP63562)
- Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
- Direct replacement for 19113733 / 19168888 / 97216136
- Backed by Alliant Power’s 24-month, unlimited-mileage warranty
Application
- Chevrolet Silverado 3500 / Silverado 2500 HD (2001–2005)
- GMC Sierra 3500 / Sierra 2500 HD (2001–2005)
Always verify fitment against your VIN, engine, and OE part number before ordering.
Cross-Reference / Replaces
- General Motors: 19113733, 19168888, 97216136
- ACDelco: 251-674, 251-723, 252-383, 252-838
- Alliant Power: AP63562
Warranty: Alliant Power’s standard warranty: 24 months with unlimited miles/hours on installed parts (Alliant Power warranty policy, rev. Aug 2025).
California Restricted
Fits: LB7|LLY Duramax 2001-2005