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:
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  • 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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Sky Soldier
Port Orchard, US
★★★★★ 5
The material and tight fitting helps keep you warm…
Size: Large, Color: Green
I am 5’8” tall and weigh in at 172 lbs dressed. These are the most comfortable cold weather shirts I have ever worn. In my humble opinion, what makes these shirts so comfortable and warm is the tight fitting and the soft, fleece like feeling on my skin. I wear and ordered the large size. The shirt is cut so they fit close to one’s body and look great compared to other brands of shirts that end up looking like one is wearing a potato bag. The tight fitting helps keep me feeling warm. No cold air pockets.
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Reviewed in the United States on January 27, 2026
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amessb
Waukegan, US
★★★★★ 4
Nice, very soft fabric
Size: XX-Large, Color: Green
Very nice fabric, sizing is goood and only shrinks slightly after washing/drying. Good color selection
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Reviewed in the United States on February 24, 2026
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Wisconsin Golfer
Belleville, US
★★★★★ 5
Better than expected
Size: X-Large, Color: Light Red
Intended to use it as an everyday shirt but the quality we much better than expected for the price so it's now a more special occasion pullover. Nice soft and comfortable material, well constructed and sewn, good loose but not baggy fit, nice heft and substance around the collar. Lightweight but not thin fabric. Excellent value = 5+ stars
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Reviewed in the United States on March 2, 2024
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Kindle Customer
Whiting, US
★★★★★ 3
Beware of Size
Size: XX-Large, Color: White
Inconsistency in size per other reviews. The site said XL was my suggested size.....I usually follow that advice. I went XXL this time and happy I did. The neck is a medium and the rest is maybe XL....it feels "fitted" too...not very loose. I will keep it as I like a snug neck---but this needs effort to pull over my head. Having said that, the material is soft and not too thick. Just beware of sizes.
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Reviewed in the United States on October 16, 2025
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R. Lesser
Natrona Heights, US
★★★★★ 5
Excellence
Size: X-Large, Color: Black
Excellent product, definitely will be buying more
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Reviewed in the United States on May 21, 2026

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