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Description
FLEECE FPE-LML-CP3-FF-NP LML CP3 CONVERSION KIT2011 2016 GM 6. 6L DURAMAX LML (NO PUMP) The Fleece FPE LML CP3 FF NP LML CP3 Conversion Kit for your 2011 2016 GM 6. 6L Duramax is designed to convert your stock CP4 to a CP3. Why convert your LML's Fuel System from a CP4 to a CP3? The stock CP4 is only capable of supporting up to ~500rwhp. A stock CP3 is capable of supporting 600+ rwhp in conjuction with the piezoelectric injectors. The CP4 was introduced as a cost reduction to the LML platform
2011-2016 GM 6.6L DURAMAX LML (NO PUMP)
The Fleece FPE-LML-CP3-FF-NP LML CP3 Conversion Kit for your 2011-2016 GM 6.6L Duramax is designed to convert your stock CP4 to a CP3. Why convert your LML's Fuel System from a CP4 to a CP3? The stock CP4 is only capable of supporting up to ~500rwhp. A stock CP3 is capable of supporting 600+ rwhp in conjuction with the piezoelectric injectors. 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 it has proven to be less reliable and less capable than the CP3 used in previous duramax platforms. CP3 pump not included.
FEATURES:
Convert CP4 To CP3
Increased Reliability & Performance
Includes Fuel Line, Adapters & Hardware
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.
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]
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4.2 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Perfect Fit for 2008 Prius
I bought this for my 2008 Prius to help with allergens since I drive with my dog often. I wanted something that fit right and actually improved the air inside the car. Installation took under 5 minutes with no tools, and it dropped in without any issues. The build quality feels solid, not flimsy. After installing it, the air smells cleaner and seems to reduce dust and allergens during drives. It hasn’t restricted airflow and is holding up well with daily use so far.
Pros:
Fit my 2008 Prius exactly with no adjustments
I noticed cleaner air and fewer allergy issues while driving
Took me less than 5 minutes to install with no tools
Cons:
A bit more expensive than basic filters I usually get
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Reviewed in the United States on May 5, 2026
★★★★★ 5
Good filter
Cabin filter works in 2009 Prius.
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Reviewed in the United States on December 18, 2025
★★★★★ 5
Fits well
Filter works as advertised
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Good one
As described. Easy to install, good price.
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Reviewed in the United States on March 23, 2026
★★★★★ 4
Good Enough
This doesn't fit precisely into place. You can see in the photo that the pleats just end with no frame on the sides to seal to the body of the housing. You can wiggle the end pleat into place but there's nothing holding it there so I don't know how long it will stay there. Not a big deal for me, but if you live on a dirt road, there could be enough air bypassing the filter that you may get a dusty car sooner. Price was fine, but I won't buy this filter again.
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Reviewed in the United States on January 13, 2025