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Description
Merchant Automotive 10549 Water Pump (With Housing)The Merchant Automotive 10549 Water Pump (With Housing) is a high quality replacement for the worn water pump your 2001 2005 GM 6. 6L Duramax LB7 LLY. Water pumps are common wear items not only in diesel trucks, but in all vehicles. A failing water pump can cause catastrophic damage if not taken care of early. The water pump is responsible for keeping coolant flowing throughout your engine, keeping it cool. As your Chevy GMC gets older, the factory
The Merchant Automotive 10549 Water Pump (With Housing) is a high-quality replacement for the worn water pump your 2001-2005 GM 6.6L Duramax LB7/LLY. Water pumps are common wear items not only in diesel trucks, but
in all vehicles. A failing water pump can cause catastrophic damage if
not taken care of early. The water pump is responsible for keeping
coolant flowing throughout your engine, keeping it cool. As your Chevy/GMC
gets older, the factory water pump can start to deteriorate due to old
age. If you do not have your coolant flushed at the recommended factory
intervals, you could see premature failure of your water pump. This
water pump kit with housing (or cover) is a great way to get your water
pump replaced with factory-like components.
This Water Pump Kit includes everything you need to replace the factory water pump on your Duramax equipped truck. This kit includes a brand new water pump with cover, water pump studs, flywheel lock, and all of the necessary seals and gaskets to complete the install. This comprehensive kit was designed specifically for completing a Duramax water pump job from start to finish.
This Water Pump Kit includes everything you need to replace the factory water pump on your Duramax equipped truck. This kit includes a brand new water pump with cover, water pump studs, flywheel lock, and all of the necessary seals and gaskets to complete the install. This comprehensive kit was designed specifically for completing a Duramax water pump job from start to finish.
Features:
- All In One Kit
- Direct Replacement
- OEM Style Water Pump
- Restores Factory Like Function
- Includes Flywheel Lock, Gaskets, Studs, & O-Rings/Seals
Kit Includes:
Water Pump With Cover
Water Pump To Engine Cover Seal
Flywheel Lock
2 Water Pump Studs
Bypass Pipe Seal
Upper Bypass Pipe Seal
Water Pump Outlet Gasket
Water Pump To Engine Cover Seal
Flywheel Lock
2 Water Pump Studs
Bypass Pipe Seal
Upper Bypass Pipe Seal
Water Pump Outlet Gasket
Signs The Water Pump In Your Duramax Is Bad
There
are a few tell-tell signs to indicate that you need to replace your
water pump as soon as possible. Fortunately, most water pumps will show
symptoms of failing before they completely fail. This may include a
coolant leak from the weep hole, a small hole in the housing, designed
to leak coolant in failure situations. You may also notice rust or
deposit buildup on the internal impellor in more extreme cases. A loose
pulley or a pump that is making whining noises can occur, but is less
common. Lastly, if your truck is overheating, this can also be the
culprit and you will want to check when diagnosing why your truck.
Note:
The harmonic balancer balancer bolt will need to be removed to replace your water pump.
The factory bolt is a torque-to-yield fastener (TTY) for one time use and must be replaced.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.3 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Great 4 piece for a wedding!
Color: Black, Size: 12 Years
My so. Is 10 years old but super skinny and super tall. The pants had an adjustable waist which was perfect for me to adjust to his skinny waist. The length was perfect. The material was great and it was well made. The tie was super easy to put on and the vest has an adjustable band on the back. This was perfect for a wedding he was attending. He looked so handsome! Great price too.
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Reviewed in the United States on October 18, 2025
★★★★★ 4
Great suit order well ahead in case need resizing
It great! My son loves suitz , the only reason I took a star is because the pants were past his ankle very short so we ended up have to use other pants. The shirt and vest fitted perfectly!
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Reviewed in the United States on January 22, 2026
★★★★★ 5
Perfecto
Color: Light Champagne, Size: 10 Years
Me encantó el color fiel a la descripción
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Nice suit
Color: Red, Size: 14 Years
Suit looked so great on my son. Fit him well. He's 11yrs old about 5 ft
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Reviewed in the United States on January 3, 2026
★★★★★ 1
Poorly sized
Color: Black, Size: 12 Years
My son is a size 12 , but this outfit was 2 times his size. The shirt was too large and pants were ridiculously wide. I have to return it
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Reviewed in the United States on May 28, 2026