Image of S&S Diesel CP3 Conversion Kit With Pump For 11-16 6.6L Duramax LML
S&S Diesel CP3 Conversion Kit With Pump For 11-16 6.6L Duramax LML
S&S Diesel CP3 Conversion Kit With Pump For 11-16 6.6L Duramax LML
Image of S&S Diesel CP3 Conversion Kit With Pump For 11-16 6.6L Duramax LML
S&S Diesel

S&S Diesel CP3 Conversion Kit With Pump For 11-16 6.6L Duramax LML

SKU: LML-CP3-CARB

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$2,600.00
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$2,990.00

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Description

Eliminate your CP4 worries once and for all with the S&S Diesel CP3 Conversion Kit With Pump for the 2011–2016 GM 6.6L LML Duramax. S&S Diesel Motorsport, a leader in common-rail diesel injection technology, developed this conversion as a permanent fix for the CP4.2 pump failures that have plagued LML Duramax trucks for years. The CP4.2 pump is known for its high failure rate, which can result in catastrophic damage to injectors, fuel rails, and lines. The S&S CP3 conversion replaces the failure-prone CP4 with the proven reliability of a Bosch CP3 high-pressure fuel pump—a time-tested design known for strength, consistency, and long life.

This CARB-compliant, 50-state legal conversion kit includes everything required for a complete installation: the CP3 pump, hardware, brackets, extension harnesses, and detailed instructions. No tuning or calibration is required, and it maintains full factory emissions equipment. With the S&S Diesel CP3 conversion, you gain superior fuel system reliability and peace of mind—protecting your engine and your investment.

Features:

  • Replaces failure-prone CP4.2 pump with bulletproof CP3 system
  • Includes new Bosch CP3 high-pressure fuel pump
  • No ECM tuning or reprogramming required for installation
  • Maintains all factory emissions systems and compliance
  • Only CARB-compliant 50-state legal CP3 conversion kit available
  • Complete bolt-on kit includes hardware and harness extensions
  • Prevents fuel system failure caused by CP4 pump contamination
  • Engineered by S&S Diesel Motorsport for LML Duramax reliability

Specifications:

  • Brand: S&S Diesel Motorsport
  • Part Number: LML-CP3-CARB
  • Application: CP4 to CP3 Conversion Kit
  • Pump Type: Bosch CP3 High-Pressure Fuel Pump
  • Fuel Compatibility: Diesel
  • Pressure Control: Factory-Style Regulated
  • Emissions Compliance: 50-State CARB Compliant
  • Tuning Required: No
  • Includes Pump: Yes
  • Includes Hardware: Yes – Full Installation Kit
  • Warranty: Manufacturer Limited Warranty

Included:

  • (1) Bosch CP3 High-Pressure Fuel Pump – New
  • (1) Mounting Bracket Set – Steel
  • (1) Extension Harness Kit – Plug-and-Play Design
  • (1) Hardware Kit – Bolts, Washers, and Fittings

Fitment:

  • 2011–2016 Chevrolet Silverado 2500HD 6.6L Duramax LML
  • 2011–2016 Chevrolet Silverado 3500HD 6.6L Duramax LML
  • 2011–2016 GMC Sierra 2500HD 6.6L Duramax LML
  • 2011–2016 GMC Sierra 3500HD 6.6L Duramax LML

Notes:

  • No tuning required
  • Not for use on trucks that already feature an aftermarket CP3 conversion

 

Fitment
Fitment

Product Specs

SKU:
LML-CP3-CARB
Brand:
S&S Diesel
attachment:
part type:
Fuel System

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