★★★★★ 5
Easy change out
The old ones were over 20 years old and brittle. These are a great replacement
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Reviewed in the United States on May 23, 2026
Fleece Performance 04.5-07 Dodge 5.9L Cummins Coolant Bypass Kit (06-07 Auto Trans)
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Fleece Performance 04.5-07 Dodge 5.9L Cummins Coolant Bypass Kit (06-07 Auto Trans)Another product from Fleece Performance built out of necessity is the 2003 2013 Cummins Coolant Bypass kit. The Cummins engine cooling system was designed to adequately cool a 300 350hp engine. When the horsepower is increased there is an increased demand on the cooling system. The rear cylinders suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the system,
Quick Dispatch:
Your Fleece Performance 04.5-07 Dodge 5.9L Cummins Coolant Bypass Kit (06-07 Auto Trans) orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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You'll receive a tracking link by email once your Fleece Performance 04.5-07 Dodge 5.9L Cummins Coolant Bypass Kit (06-07 Auto Trans) ships.
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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
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4.7 ★★★★★
Based on 1947 reviews
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Product Reviews
★★★★★ 5
Perfect!
Plenty of choices. Worked great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 4, 2025
★★★★★ 5
Perfect fit for a Tacoma.
There are 2 headlight bulb retaining clips in this packet that fit my 2013 Tacoma. Fits perfect, no modifications needed to the clips. Toyota dealers do not sell these clips alone, they must be ordered with the headlight housing. eBay has one for $50!!! AMZN beats them all.
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Reviewed in the United States on August 18, 2025
★★★★★ 5
Worked Like A Champ!
This kit had the retainer I needed, and I have a nice selection for future vehicles! I was looking for more crap to store in the garage, now I need a bigger tool box…
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Reviewed in the United States on July 10, 2025
★★★★★ 5
Got what I paid for
Looks exactly as what is advertised
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Reviewed in the United States on September 13, 2025
