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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25
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Description
2011-2016 LML CP3 Conversion KitWhy convert your LML's Fuel System from a CP4 to a CP3 Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax platforms, resulting in costly repairs for owners when a CP4 fails. Our CP3 conversion kit lets you easily adapt a CP3 to your 2011 2016 Duramax. In conjunction with the piezoelectric injectors, a CP3K conversion is capable of supporting 600+ rwhp and a PowerFlo 750 conversion is
Why convert your LML's Fuel System from a CP4 to a CP3
Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax platforms, resulting in costly repairs for owners when a CP4 fails. Our CP3 conversion kit lets you easily adapt a CP3 to your 2011-2016 Duramax. In conjunction with the piezoelectric injectors, a CP3K conversion is capable of supporting 600+ rwhp and a PowerFlo 750 conversion 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
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 from Fleece Performance. Failure to install the correct calibrations can result in engine damage.
Prop 65WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.5 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 4
okay so far...
I was wondering how my skin would react from this since I've been the cerave SA cleanser for a while now and didn't notice any dryness whatsoever with that. But, I've always wondered the strength or percentage of SA in the cerave (which is impossible to find out I guess...) I'm guessing it's less than 2% so I wanted to try out a cleanser with a higher % to see if there was a different. After a few days I did notice some dryness, which I suppose could be due to wintertime, but I think it's the cleanser. Not surprising, I was bracing myself for dry skin. I will probably take a break until my skin returns to normal and reintroduce this to a few times a week or something, or I may save it for the humid summers. Other than that, I like the formula, it has a very subtle scent I don't mind at all.
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Reviewed in the United States on December 17, 2021
★★★★★ 5
Smooth and oil free skin
At first I was scepticle, losing hope that anything would help my oily acne prone skin. But then I ordered this, and it's magic. Now my skin is smooth, balanced, and the acne is slowly going away. Best thing of all, no more oily skin! Will be ordering again!
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Reviewed in the United States on November 8, 2025
★★★★★ 5
BUY THIS!
I WISH i took a before and after photo of my results because the speed of which this worked was insane. Although I encourage to use the product as the package instructs you to, I just needed to share how well it worked for me and how I used it. I began applying the cleanser specifically to my acne prone areas on my face (between my eyebrows, above my lips etc) and allowing it to sit for 15-30 minutes before washing it off then moisturizing immediately after during the night time. in the morning, i cleansed those same areas once more and moisturized with spf 25 sun protection to protect my skin from dryness and repeated those steps each night for the next 3 days. 1 night i decided to just leave the cleanser on my acne prone/scarring areas and the morning after, the most stubborn scar on my face was literally GONE. it was insane. needles to say, this product worked so well for me. instantly cleared up my acne, by scarring, and stubborn bumps on my face. don’t forget to moisturize and use sun protection though because salicylic acid is in fact very drying for your skin. love this product. highly highly highly recommend.
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Reviewed in the United States on March 2, 2023
★★★★★ 3
Did the formula change?
I had ordered a travel kit of this product around christmas and it seemed to work really well. I was only really using the cleanser from the kit, and I ran out so I decided to order more. I feel like this isnt the same as what was in the kit. Ive been constantly breaking out since using this bottle. I dont know if the formula changed or what, but I can't use it anymore.
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Reviewed in the United States on March 27, 2026
★★★★★ 5
Good product
Good product
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Reviewed in the United States on November 19, 2025