• Cart

SKU #: SD-WWP-01 MPN #: SD-WWP-01

Sinister Diesel Welded Water Pump 01-05 GM 6.6L Duramax LB7 / LLY

$285.99
Get 285 points in loyalty rewards
Description
Ensuring proper operation of the water pump in your LB7/LLY Duramax is extreamly important ecspecially on modified engines. 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.

Enter your zip and we'll see if installation is available.

  • Request quotes from local installers at checkout
  • Compare options and choose the best fit for your install

Ensuring proper operation of the water pump in your LB7/LLY Duramax is extreamly important ecspecially on modified engines. 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.

Vehicle Fitment
2001-2005 6.6L GM Duramax LB7 / LLY
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
FEATURES & BENEFITS:
  • TIG welded on both Impeller and Gear for high strength and slip-free operation
  • Drop-in replacement for LB7/LLY factory water pump
  • Meets or exceeds OEM specifications
KIT CONTENTS:
  • Sinister Diesel "Welded" Water Pump
  • O-Ring
  • Thermostat Gasket
  • Housing is NOT Included
About Sinister Diesel

Sinister stands for everything diesel and they have made a name for themselves manufacturing some of the highest quality diesel engine components in the industry. The Sinister Diesel brand was born out of an idea from the founders while working on one of their own trucks. What if they started their own diesel performance business manufacturing and selling high quality air intake, fuel, and engine components? That idea transpired into the Sinisterl Diesel we know today. In order to make sure that when you popped the hood, you could easily distinguish a œSinister branded part from other companies, nearly everything they manufacture is coated in their trademarked œSinister Blue. Whether you drive a Cummins, Powerstroke, or Duramax, they can outfit your entire truck with cold air intakes, fuel tank sumps, oil filtration, regulated fuel return kits, and so much more. If you're looking for quality performance parts at a great price, look no further than Sinister!

Overall rating: 4.6666665 / 5 from 6 reviews.

AI Generated Review Summary

Summary topics

Review topics: [].

Review highlights

Reviews

"Perfect fit and finish!! Going to see how long it hold up to 1200 hp"

Daryl (5/5)

Wish it came with the

"Wish it came with the OEM gasket on the bottom of pump but over all very happy"

Cole R. (5/5)

Welded LB7 water pump

"Looks to be a great product, welds look great, & comes with the seals needed"

David C. (5/5)

So far so good

"I was doing my head gaskets and was told I should think about doing my water pump too. I’m glad I did, my old pump though it seemed to still be working fine it was partially broken. All my gaskets I needed came in the box. Though like the other review mentions it would be nice if it came with the water pump housing because mine also was ate into pretty good. But the product is like described. I just didn’t read into it enough before purchase"

Ely E. (5/5)

Great pump but it doesn't come with everything

"Pump works great thus far (installed about 1 month ago). I was missing several o-rings and gaskets for the water pump install. I installed the pump at a friend's house whome lives about 16 miles from the nearest parts store but luckily he had some o-rings laying around that we made work. I used rightstuff in place of the missing gaskets. The other problem was this doesn't come with the housing. My housing had some decent sized cavitation burns inside of it. I was able to use some JB quick and then sand it smooth. This wasn't ideal and we'll see how long it holds up."

Kory B. (3/5)

great service

"great service"

Jim R. (5/5)

Q&A