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CP3 Conversion Kit with CP3 for 2011-2016 LML Duramax Fleece Performance
Upgrade your 2011–2016 LML Duramax with a Fleece Performance CP3 conversion kit—no tuning required. Replace your unreliable CP4 with a proven Bosch CP3 for better reliability, fueling, and peace of mind.
Protect your 2011–2016 LML Duramax from costly CP4 failures by converting to a reliable Bosch CP3 pump with our complete, no-tuning-required Fleece Performance CP3 conversion kit. The factory CP4 is known for expensive, catastrophic failures that can wipe out the entire fuel system. This kit is designed for a true OEM fit-and-finish, featuring Fleece-exclusive molded fuel feed and return hoses, high-flow CP3 fuel fittings, and a valley feed line to support aftermarket lift pump applications. Plus, it’s 50-state compliant (EO# D-834-1) and requires no custom tuning—just bolt on and go.
Kit Contents:
- CP3 to rail high-pressure fuel line
- High-flow CP3 feed and return fittings
- Preformed fuel feed and return hoses
- CP3 mounting adapter
- Dosing injector distribution block, feed and return lines
- FCA extension harness
- Low-pressure fuel feed line
- Complete hardware kit
- Engine Year2011-2016
- Property 65 WarningCALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
- Vehicle TypeTruck/SUV
- FinishRaw
- BrandFleece Performance
- Country of OriginUS
- Sold AsKit
Shipping Times
Most customers will see their parts within 3-5 business days. We will primarily ship with Purolator ground & DHL Express to ensure the fastest shipping possible.
Please Note: These are only estimates and shipping time may vary depending on your location, out of country and rural locations expect longer wait times.
Where Do We Ship
We will ship our products within Canada and the United States.
Please Note: There are limitations what can be shipped to the United States.
Damaged Shipments
We provide the option to purchase insurance as we are not responsible for any damage while with a courier, we don’t often see issues, but it does happen. If you purchased insurance we will put in a claim, if no insurance was purchased there will be no refunds or exchanges.
Return Policy
It happens sometimes we would like to return it. Here are our return rules:
- Prior to any return you must contact us and get an approval for a RMA number.
- Product must be unopened and have no damage.
- You must pay for the shipping back, please insure so if anything happens you can make a claim, we are not responsible for damage during shipping and is the sole responsibility of the customer.
- Regular products are subject to a 5% Restocking fee.
- Items over 50 lbs. or special orders will be subject to a 20% Restocking fee.
- Electronics & Tuning is a final sale and cannot be returned.
- Fitment TypeVehicle Specific
Year | Make | Model | Notes |
---|---|---|---|
2011 | GMC | Sierra 3500 HD | |
2011 | GMC | Sierra 2500 HD | |
2011 | Chevrolet | Silverado 3500 HD | |
2011 | Chevrolet | Silverado 2500 HD | |
2012 | GMC | Sierra 3500 HD | |
2012 | GMC | Sierra 2500 HD | |
2012 | Chevrolet | Silverado 3500 HD | |
2012 | Chevrolet | Silverado 2500 HD | |
2013 | GMC | Sierra 3500 HD | |
2013 | GMC | Sierra 2500 HD | |
2013 | Chevrolet | Silverado 3500 HD | |
2013 | Chevrolet | Silverado 2500 HD | |
2014 | GMC | Sierra 3500 HD | |
2014 | GMC | Sierra 2500 HD | |
2014 | Chevrolet | Silverado 3500 HD | |
2014 | Chevrolet | Silverado 2500 HD | |
2015 | GMC | Sierra 2500 HD | |
2015 | GMC | Sierra 3500 HD | |
2015 | Chevrolet | Silverado 3500 HD | |
2015 | Chevrolet | Silverado 2500 HD | |
2016 | GMC | Sierra 2500 HD | |
2016 | GMC | Sierra 3500 HD | |
2016 | Chevrolet | Silverado 3500 HD | |
2016 | Chevrolet | Silverado 2500 HD |