LML Duramax CP3 Conversions 2011-2016 Kit W/pump Competition Use Only Tuning Req D Each S&S Diesel
SKU: 63941830631

LML Duramax CP3 Conversions 2011-2016 Kit W/pump Competition Use Only Tuning Req D Each S&S Diesel

Sale price$801.00 Regular price$890.00
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Description

LML Duramax CP3 Conversions 2011-2016 Kit W/pump Competition Use Only Tuning Req D Each S&S DieselS&S Diesel Motorsport, the world leader in common rail diesel injection has developed a solution for CP4. 2 high pressure pump failures that have plagued the LML Duramax engine. The S&S solution is to remove the problem before it becomes a problem, by replacing the CP4. 2 with a tried and true, bulletproof CP3 high pressure fuel pump. CP4 high pressure pumps are the Achilles heel of the LML Duramax engine because of high failure rates, and commonly

S&S Diesel Motorsport, the world leader in common-rail diesel injection has developed a solution for CP4.2 high-pressure pump failures that have plagued the LML Duramax engine.

The S&S solution is to remove the problem before it becomes a problem, by replacing the CP4.2 with a tried and true, bulletproof CP3 high pressure fuel pump.

CP4 high pressure pumps are the Achilles heel of the LML Duramax engine because of high failure rates, and commonly taking out the entire, very costly, high-pressure system with it (injectors, rails, lines).

S&S Diesel Motorsport offers the first CARB-compliant (EO D-756-4) 50 State CP3 conversion available for the LML. This includes all hardware necessary to replace the troublesome CP4 with a bulletproof CP3, requires no tuning changes, and still maintains factory emissions control equipment for $2,600 MAP.

S&S also offers two other versions of LML CP3 conversion kits for competition applications which don’t require after-treatment. One tuning required version for $1,780.00 MAP, and one drop-in no tuning required for $2,175.00 MAP.
Options

  • 50 State LML CP3 conversion kit w/pump - CARB EO #D-756-4 - No Tuning Required
  • LML CP3 conversion kit w/pump - No Tuning Required
  • LML CP3 conversion kit w/pump - Tuning Required
  • LML CP3 conversion kit w/o pump
  • LML CP3 H/O Pump Option - Add desired CP3 (SS, 10, 12, 14mm) price to LML conversion kit without pump price

Details:

  • Liter: 6.6
  • Cylinders: 8
  • BlockType: V
  • Fuel Type: Diesel
  • Engine Destination: LML
  • CC: 6599
  • CID: 403
  • Engine Bore Inches: 4.06
  • Engine Bore Metric: 103
  • Engine Stroke Inches: 3.9
  • Engine Stroke Metric: 99
  • Engine Years: 2011-2016
  • Condition: New
  • Sold As: Each
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 63941830631

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Barbara Rambow
San Leandro, US
★★★★★ 4
Workable but not as tight to fit
Size: 11SMax-24Pack
They work, but they don’t click in as smooth as the original pieces did
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 20, 2026
H
Verified Purchase
Huf
Lowell, US
★★★★★ 5
Fast shipping, items as advertised.
Size: 11SMax-24Pack
Perfect fit.
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Reviewed in the United States on May 20, 2026
Y
Verified Purchase
Your Name Here
Houston, US
★★★★★ 5
Works for my G30 Verge
Size: 11SMax-24Pack
Fit my G30 Verge. Works well and brought it back to life. Great value for the money!
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Reviewed in the United States on January 15, 2026
M
Verified Purchase
Melissa D Chaney
Charlottesville, US
★★★★★ 5
Fits my Eufy
Size: 11SMax-24Pack
Parts fit my Eufy like they should. The side brush has held up nicely.
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Reviewed in the United States on April 26, 2026
C
Verified Purchase
Clyde
Grantham, US
★★★★★ 5
Bang for buck
Size: 11SMax-24Pack
You get a lot for the price. And it fits. Recommended. It is a little noisier than the original bit functions are the same
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Reviewed in the United States on January 10, 2026

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