SKU: 99273096009

Fleece Performance 11-16 GM 2500/3500 Duramax LML CP3 Conversion Hardware Kit w/o Pump

Sale price$340.22 Regular price$378.02
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Description

Fleece Performance 11-16 GM 2500/3500 Duramax LML CP3 Conversion Hardware Kit w/o PumpConvert your LML's fuel system from a CP4 to a CP3. Improve your LML Duramax's reliability and fueling capability with a CP3 conversion. Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax platforms. Failures of the CP4 are extremely costly and require replacement of the entire fuel system. Avoid a costly failure down the road and convert your CP4 to a CP3 on the 2011 2016 LML Duramax

Convert your LML's fuel system from a CP4 to a CP3. Improve your LML Duramax's reliability and fueling capability with a CP3 conversion. Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax platforms. Failures of the CP4 are extremely costly and require replacement of the entire fuel system. Avoid a costly failure down the road and convert your CP4 to a CP3 on the 2011-2016 LML Duramax platform. Our kits provide you with OEM quality components including a brand new Bosch CP3, Fleece exclusive molded hoses for the fuel feed and return, high flow CP3 fuel fittings, and our valley feed line to support aftermarket lift pump and filter applications. This kit does not include a CP3 injection pump. Features: High flow CP3 feed and return fittings Preformed feed and return fuel lines 50-state compliant EO# D-834-1 Kit Contents: CP3 to rail high pressure fuel line High flow CP3 feed and return fuel fittings Preformed feed and return fuel lines CP3 mounting adapter Dosing injector feed line FCA extension harness Fuel temperature sensor mounting bracket Low pressure fuel feed lines Hardware kit Application Notes: No FCA regulator table changes are required when converting from the CP4 to a stock CP3 when using this kit. Patent Pending

Installation Instructions
Datasheet
Warranty
  • High flow CP3 feed and return fittings
  • Preformed feed and return fuel lines
  • 50-state compliant
  • EO# D-834-1

This Part Fits:

Year Make Model Submodel
2015-2016 Chevrolet Silverado 2500 HD High Country
2011-2016 Chevrolet Silverado 2500 HD LT
2011-2016 Chevrolet Silverado 2500 HD LTZ
2011-2016 Chevrolet Silverado 2500 HD WT
2015-2016 Chevrolet Silverado 3500 HD High Country
2011-2016 Chevrolet Silverado 3500 HD LT
2011-2016 Chevrolet Silverado 3500 HD LTZ
2011-2016 Chevrolet Silverado 3500 HD WT
2015-2016 GMC Sierra 2500 HD Base
2011-2016 GMC Sierra 2500 HD Denali
2011-2016 GMC Sierra 2500 HD SLE
2011-2016 GMC Sierra 2500 HD SLT
2011-2014 GMC Sierra 2500 HD WT
2015-2016 GMC Sierra 3500 HD Base
2011-2016 GMC Sierra 3500 HD Denali
2011-2016 GMC Sierra 3500 HD SLE
2011-2016 GMC Sierra 3500 HD SLT
2011-2014 GMC Sierra 3500 HD WT
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: 99273096009

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Jessie
New York, US
★★★★★ 5
Great product
Size: CF10134&CA11476
Price great. Fit perfectly
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Reviewed in the United States on May 23, 2026
M
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Mozzie
Fort Morgan, US
★★★★★ 5
Easy Fit And Cheaper Than The Dealer
I bought this A-Premium engine air filter for my Accord 1.5L instead of paying dealer prices and it worked out perfectly. It dropped into the factory air box with no issues and took only a few minutes to swap out. The seal lines up properly and the construction feels solid, not flimsy like some of the really cheap filters. After replacing the old dirty filter, the car feels a bit smoother on acceleration and the intake sound is a little quieter. It is one of those simple maintenance items that is easy to put off, but this makes it affordable to keep up with it yourself. If you have a 2018 to 2022 Accord 1.5L and want a straightforward replacement you can install at home, this filter is a good value.
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Reviewed in the United States on December 7, 2025
D
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dan mueller
Los Angeles, US
★★★★★ 5
Exact match for a 2018 Challenger
Exact match for 2018 Challenger. Removed the old filter located passenger side under the hood. Replaced the old with the new took literally two minutes. Now I have fresh clean and they close through my vents with no smell.
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Reviewed in the United States on February 17, 2026
Z
Verified Purchase
Zac
Louisville, US
★★★★★ 5
Good quality
Works great! Good quality and price!
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Reviewed in the United States on November 20, 2025
A
Verified Purchase
Alex Bernardin
Charlottesville, US
★★★★★ 5
Perfect fit
Perfect fit for my Accord
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Reviewed in the United States on February 15, 2026

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