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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15
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Description
Sinister Diesel 01-05 GM Duramax 6.6L LB7/LLY Welded Water PumpProper heat management from the cooling system is crucial on modified engines when you want trouble free and reliable performance. The factory Duramax water pump is known to slip under load and can serious problems and serious repair bills on modified high horsepower applications. This updated design is a drop in replacement for the factory water pump and uses precision TIG welds to secure both the impeller and pump gear to the shaft. If your 2001
Proper heat management from the cooling system is crucial on modified engines when you want trouble-free and reliable performance. The factory Duramax water pump is known to slip under load and can serious problems and serious repair bills on modified high-horsepower applications. This updated design is a drop-in replacement for the factory water pump and uses precision TIG welds to secure both the impeller and pump gear to the shaft.If your 2001-2005 Duramax powered truck is running a tuner, a bigger turbo, or bigger injectors, or if it's just time for routine maintenance, get peace of mind with the Sinister Diesel Welded Duramax Water Pump., Includes:Sinister Diesel "Welded" Water Pump, O-Ring, Thermostat Gasket.This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2001-2005 | Chevrolet | Silverado 2500 HD | Base |
| 2001-2005 | Chevrolet | Silverado 2500 HD | LS |
| 2001-2005 | Chevrolet | Silverado 2500 HD | LT |
| 2004-2005 | Chevrolet | Silverado 2500 HD | WT |
| 2001-2005 | Chevrolet | Silverado 3500 | Base |
| 2001-2005 | Chevrolet | Silverado 3500 | LS |
| 2001-2005 | Chevrolet | Silverado 3500 | LT |
| 2004 | Chevrolet | Silverado 3500 | WT |
| 2002-2005 | GMC | Sierra 2500 HD | Base |
| 2001-2002 | GMC | Sierra 2500 HD | SL |
| 2001-2005 | GMC | Sierra 2500 HD | SLE |
| 2001-2005 | GMC | Sierra 2500 HD | SLT |
| 2003-2005 | GMC | Sierra 2500 HD | WT |
| 2002-2005 | GMC | Sierra 3500 | Base |
| 2001-2002 | GMC | Sierra 3500 | SL |
| 2001-2005 | GMC | Sierra 3500 | SLE |
| 2001-2005 | GMC | Sierra 3500 | SLT |
| 2004-2005 | GMC | Sierra 3500 | WT |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
Auto air filters
Size: 16-22 Pilot, 14-16 MDX
Perfect - product great - installation easy and much cheaper than having dealer or auto shop do it ——
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Easy change, Great deal.
Size: HRV (2023-26) 2.0L Gas
Great fit for my 2024 HR-V.
Easy replacement, no tools needed.
Would definitely purchase again. Saved from paying outrageous pepboy fee.
Could feel and smell the difference immediately after. No more allergies.
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Reviewed in the United States on March 30, 2026
★★★★★ 5
Good feal
Size: HRV (2016-22) 1.8L Gas
Just get these.Easy to install and will save you stupid labor costs.
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Reviewed in the United States on May 7, 2026
★★★★★ 5
Honda wanted $150+ to replace these...
Size: HRV (2023-26) 2.0L Gas
These are exact fits for my honda 2025 Honda H-RV. It was super easy to install and took me less than 5 minutes to replace my old ones and put these in. Car smells clean and no debris in the intake! Seems to be good quality (been 1 week so far)
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Reviewed in the United States on January 8, 2026
★★★★★ 5
Cabin and air filter installed.
Size: HRV (2016-22) 1.8L Gas
Part fit perfect and easy to install myself. Great value and saved a lot of money installing it myself. It took five minutes.
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Reviewed in the United States on January 26, 2026