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Fleece Performance 01-13 GM Duramax 6.6L Duramax CP3K (LBZ/LMM Based)

Marsoni M251S
Sale price$674.50
Pay 4 payments of $168.62 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Fleece Performance 01-13 GM Duramax 6.6L Duramax CP3K (LBZ/LMM Based)The Fleece Performance CP3K is a modified Duramax LBZ CP3 designed to eliminate the factory fuel flow restriction that begins at 3,000 RPM. If you have a stock CP3 pump you are losing fuel flow and rail pressure after 3000 RPM, which correlates to lost horsepower when you need it most. This cost effective upgrade will allow you to maintain desired fuel rail pressure through your entire RPM range. This Part Fits: Year Make Model Submodel 2006 2010
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  • We offer a 30-day return/exchange service after receiving.
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4.4 ★★★★★
Based on 1917 reviews
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Verified Purchase
Michael J. Tuten
New York, US
★★★★★ 4
Easy valve cleaning for the engine
Size: 150 ml, Pack of 1
Just tried the LIQUI MOLY Valve Clean in my car. added it to my fuel, and it seems to help keep things running smoothly. it's handy to have on hand for maintenance, especially when I want to avoid engine issues. it works well in my daily drive and is pretty simple to use. glad i picked this up.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
A
Verified Purchase
Adam
Cuba, US
★★★★★ 5
Fine product
Size: 150 ml, Pack of 1
This one works
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Reviewed in the United States on May 24, 2026
P
Verified Purchase
Palmetto Dan
Phoenix, US
★★★★★ 5
Works great!
Size: 150 ml, Pack of 1
This product works great for cleaning valves. Very effective formula that does the job well. Arrived quickly and was exactly as described. Would definitely buy again!
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Reviewed in the United States on May 2, 2026
C
Verified Purchase
cb
Omaha, US
★★★★★ 5
Molly valve cleaner
Size: 150 ml, Pack of 1
Put this in my truck with a RAM engine it was kind of running a little bit rough not really sure what was going on I thought I'd get this liquid Maui a try and she smoothed out some but you know who knows it could be all Hocus pocus
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Reviewed in the United States on May 23, 2026
A
Verified Purchase
Amazon Customer
Birmingham, US
★★★★★ 5
Good product
Number of Items: 1
Bought to see if it would help with oil consumption. Good quality it seemed to help for first 1000 miles. Xc60 with over 140k
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Reviewed in the United States on April 24, 2026

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