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Ships within 48 hours · Estimated delivery Jul 20 - Jul 25
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Description
2011-2016 LML CP3 Conversion Kit with PowerFlo 750Why convert your LML's Fuel System from a CP4 to a CP3? The stock CP4 is only capable of supporting up to ~500 RWHP. 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. The CP4 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.
Why convert your LML's Fuel System from a CP4 to a CP3?
- The stock CP4 is only capable of supporting up to ~500 RWHP. 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.
- The CP4 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.
The Fleece CP3 Kit contains:
- 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
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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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
4.0 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Pink and purple perfection
Size: 13 Little Kid, Color: Pink/Purple, Size: 13 Little Kid, Color: Pink/Purple
Fits great and perfect colors for my (not so) little. This is her first pair of "tie" shoes so we're still learning, but the laces are a good length for teaching and practicing. She says they're very comfortable too.
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Reviewed in the United States on March 27, 2026
★★★★★ 5
TTS
Size: 5 Big Kid, Color: White
TTS, comfy
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Reviewed in the United States on November 24, 2025
★★★★★ 5
True to size
Size: 6.5 Big Kid, Color: Navy/Peel
My a likes the fit. Says they’re comfortable, lines the color.
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Reviewed in the United States on January 12, 2026
★★★★★ 4
My son destroys shoes, same thing happened here.
Size: 5 Big Kid, Color: Black
For some reason my son started doing the duck walk at school and while performing this little trick for his classmates he ripped the rubber that wraps over top the toe. Now, instead of being glued up and into place, its basically sagging down. Thankfully that's the only thing that's gone wrong with these and honestly this sort of wear and tear is not typical. What I would say is that if your child is rough on shoes, I would pass on these. They are very nice, very light weight and are great for school. However, due to the design, they might not best good for some kids.
In terms of sizing and comfort, my son wears a 5 and these fit him very well. He has wide feet like his dad, and these don't bother him at all. He's says they're very comfortable and does enjoy wearing them.
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Reviewed in the United States on September 17, 2025
★★★★★ 5
Buen producto
Size: 4.5 Wide Big Kid, Color: Navy/Blue
Recomendado, acorde a la talla y muy cómodos para correr.
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Reviewed in the United States on January 9, 2026