SKU: 87868019259

2011-2016 LML CP3 Conversion Kit with CP3K

Sale price$972.90 Regular price$1081.00
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Description

2011-2016 LML CP3 Conversion Kit with CP3KConvert your LML's Fuel System from a CP4 to a CP3 The stock CP4 is only capable of supporting up to ~500rwhp and was introduced as a cost reduction to the LML platform since a smaller amount of fuel is required when running the more efficient piezoelectric injectors. Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax platforms. A CP3K is capable of supporting 600+ rwhp in conjunction

Convert your LML's Fuel System from a CP4 to a CP3

The stock CP4 is only capable of supporting up to ~500rwhp and was introduced as a cost reduction to the LML platform since a smaller amount of fuel is required when running the more efficient piezoelectric injectors. Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax platforms.A CP3K is capable of supporting 600+ rwhp in conjunction with the piezoelectric injectors. The reliable and proven PowerFlo 750 is capable of supporting nearly 850+ rwhp.

Kit Contents: 

High Pressure Fuel Rail Line
Fuel Rail Plug and Nut
CP3 Block Adapter with O-ring
(3) CP3 Block Adapter Bolts (Flange Head, M8x1.25x35mm)
CP3 Pump Fittings – 3/8”
CP3 Pump Fittings – 1/2"
(2) Sealing Washers
Low Pressure Fuel Feed Line –
3/8”x8” Flexible Fuel Line with Hose Clamps (CP3 Return)
1/2”x30” Flexible Fuel Line with Hose Clamps (Filter to CP3)
3/4” P-Clamp
Fuel Return Line Block Off with O-ring

 

Installation Instructions

LML CP3 Conversion Fuel Pressure Regulator Table

NO CORE CHARGE ON CP3 PUMP!

 

WARNING

  • This product is not legal in the state of California.
  • When used incorrectly this product may violate local, state, and federal laws pertaining to emissions, traffic, registration, and safety.
  • Use of this product may damage or destroy mechanical and/or electrical components of this vehicle.
  • Use of this product may void or nullify the vehicles factory warranty.
  • User understands that motorsports are dangerous, and that installation of this product may subsequently require special driving skills or techniques to safely operate the vehicle.
  • User assumes sole responsibility for the safe, proper, and legal use of the vehicle at all times.
  • The purchaser and end user releases, indemnifies, discharges, and holds harmless Fleece Performance Engineering, Inc. from any and all claims, damages, causes of action, injuries, or expenses resulting from or relating to the use or installation of this product that is in violation of the terms and conditions on this page, the product disclaimer, and/or the product installation instructions. Fleece Performance Engineering, Inc. will not be liable for any direct, indirect, consequential, exemplary, punitive, statutory, or incidental damages or fines cause by the use or installation of this product.
  • This product may not work with the EGR cooler installed. It may need to be removed.
  • This product MUST be used in conjunction with custom tuning calibrations. Failure to install the correct calibrations can result in engine damage.
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: 87868019259

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Jeremey
San Leandro, US
★★★★★ 5
Great Looking Shelf
Color: Brown, Size: 4Tier48in, Color: Brown, Size: 4Tier48in
I love this shelf! It took two people to hang it and you definitely want to ensure you hit a stud on at least one side or 1-2 screws if mounting between studs. It is heavy but a single person can lift it, just not maneuver easily due to its dimensions. It has a ton of room and fits mini helmets nicely in my office. Where I mounted it made it difficult to an extent to install but if you are even somewhat handy, you’ll be fine. You absolutely need a stud finder to hang this shelf. Sorry, I’m married! I would buy this shelf, or versions of it, again. Very practical and useful to display autographs, housewares or decor. Last note: do not over tighten the poles. The wood is soft and the poles are light weight. They are not traditional black pipe and weigh far less.
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Reviewed in the United States on November 11, 2025
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Jennifer Houben
Lake Worth, US
★★★★★ 5
Very satisfied!
Color: Brown, Size: 3Tier48in, Color: Brown, Size: 3Tier48in
Quality product, very sturdy, real wood shelves, easy to put together and mount. Not too heavy and the size is nice.
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Reviewed in the United States on April 12, 2026
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Hayley C
Grantham, US
★★★★★ 5
AWESOME Look and Quality
Color: Brown, Size: 2Tier60in
I love these shelves and have bought additional for other areas in the house. I love the look of the industrial pipes, the color of the shelves is perfect, they are sturdy and hold a lot of weight. They are somewhat difficult to assemble, but it's expected as hanging shelves are never fun to hang. I love them. If you are on the fence, just do it :)
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Reviewed in the United States on October 10, 2025
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Dustin O
Charlottesville, US
★★★★★ 4
Nice, but a bear to install
Color: Black, Size: 3Tier48in
Quality product that looks good on our shiplap wall of the wet bar space. The install was a real trip and extremely difficult. You definitely need 2 or more people to install as the direction tell you to put the entire item together, then hang on the wall. This makes it impossible to do yourself.
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Reviewed in the United States on April 20, 2026
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Stevie St. Onge
Draper, US
★★★★★ 5
Exactly what I was looking for
Color: Brown, Size: 3Tier48in, Color: Brown, Size: 3Tier48in
Very sturdy shelves and super easy to put together. I would put the shelves together starting with the bottoms then after it’s put together tighten everything up also starting from the bottom.
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Reviewed in the United States on March 16, 2026

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