SKU: 50500015582

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: 50500015582

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4.7 ★★★★★
Based on 28 reviews
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Verified Purchase
LetsGetReal
Louisville, US
★★★★★ 5
Perfect for Aggressive Chewers
Color: Blue-Green-Orange
I've been looking for toys my German Shepherd puppies can't tear apart or chew into little bits within minutes. These are tough enough to stand up to them and have the added benefit of helping their teeth with the little surface nubs. This is the second set I've purchased - not because the puppies destroyed them, but because they needed a set for inside as well as outside. I HIGHLY recommend these toys if your dog is a destruction machine!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
J
Verified Purchase
Julie A Hagerman
Natrona Heights, US
★★★★★ 5
Durable, sensory texture
Color: Blue-Green-Orange
These are fantastic. They are durable and high quality. My dog loves the sensory texture and they satisfy his aggressive chewing. I've bought other high-end, popular brands and he chewed through it in less than two hours. I would definitely buy these again (if I even had to)!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 30, 2025
C
Verified Purchase
Chisme28
West Palm Beach, US
★★★★★ 5
Best purchase
Color: Blue-Green-Orange
These are by far one of the best toys for my aggressive chewer. My pitbull mix loves the football & ball, gave the other toy to my niece's dog. Bought them in Nov/Dec and they have held up great, still look new. I was upset when I saw they are no longer available. I would have purchased more to have some for specific outdoor use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
G
Verified Purchase
Gama
New York, US
★★★★★ 4
Good buy
Color: Blue-Green-Orange
Babies didn't use them. Too tough for their mouths. They are to small. Good for a bigger puppy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2026
T
Verified Purchase
The Missus (sometimes Mr, too)
Birmingham, US
★★★★★ 5
Mastiff mix puppy loves them
Color: Blue-Green-Orange
I have experience with large working dog breeds, and I've got a mastiff lab mix puppy, who at 5 months weighs 50 pounds and is teething hard, and chews on everything. Most chew toys I've tried broke within a few minutes, but these have held up. I like that the ones I received are hollow, so I can put puppy kibbles inside them to keep the dog busy in her crate, and slow her eating so she doesn't scarf down her meals and get sick. The hole is small, but I feed small sized "taste of the Wild" brand kibbles, and they would pour out of Kong toys within seconds. I have recommended them to other puppy owners. My dog isn't an aggressive chewer, but for a teething puppy, these toys do seem to be ideal.
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Reviewed in the United States on May 9, 2022

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