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6BT 24 valve Cummins 5.9 Diesel owners. This is a must have for all Cummins diesel owners!! This is a common problem with all Cummins engines that are turned up and this is the best solution. Our water bypass kit relieves excessive pressure in the back of the engine while also dropping coolant temperatures by as much as 20 degrees!
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.