Welded Water Pump for 2001–2005 GM 6.6L Duramax LB7/LLY (ACDelco 252-838)
Welded Water Pump for 2001–2005 GM 6.6L Duramax LB7/LLY (ACDelco 252-838) is backordered and will ship as soon as it is back in stock.
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Product Care information
Product Care information
At BackWoods Diesel, we ensure all parts are stored in a clean, dry, and temperature-controlled environment to prevent damage. Our team inspects each part for quality and maintains them according to manufacturer guidelines before shipping.
Delivery and Shipping
Delivery and Shipping
At BackWoods Diesel, we prioritize fast and reliable shipping. All orders are carefully packed and dispatched promptly to ensure your parts arrive safely and on time, so you can keep your projects running smoothly without delay.
Welded Water Pump for 2001–2005 GM 6.6L Duramax LB7/LLY (ACDelco 25...
Description
Description
Upgrade your Duramax with a heavy-duty welded water pump designed to eliminate a known failure point in 2001–2005 GM 6.6L LB7 and LLY engines. This pump begins as a brand-new ACDelco 252-838 / GM 19113733 unit, then undergoes a precision welding process that permanently secures the impeller to the shaft — solving the slippage issue found in the original press-fit design.
Whether you're towing, tuned, or just want long-term reliability, this is the upgrade your Duramax cooling system needs.
Features:
- OEM ACDelco 252-838 core with welded impeller shaft
- Prevents slippage under high load or RPM
- Direct bolt-on replacement — no core return required
- Includes gasket and O-rings for easy installation
- Backed by GM OE quality and fitment
Fitment:
2001–2004 Chevy/GMC Silverado & Sierra 2500HD/3500 (6.6L Duramax LB7)
2004.5–2005 Chevy/GMC Silverado & Sierra 2500HD/3500 (6.6L Duramax LLY)
Part Numbers:
GM: 19113733 | ACDelco: 252-838
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