After placing my order they immediately called me, left a voice mail, and emailed because I was working and missed all three to tell my order would need to be broken up because an error occured with a manufacturer and they had to outsource reassuring me quality would still be the same and all the parts would arrive. The Fleece Coolant Bypass is one of the most important additions you make to improve the reliability and longevity of the Cummins platform.I’m in the process of doing a full rebuild on my 2007 5.9 cummins and instead of using cummins quick serve i decided to try out something out like KT Performance. This can cause catastrophic failure or blow outs of the freeze plugs in an over-temperature / over-pressure condition. One of the biggest issues on the 5.9 Cummins is the coolant flow problem to the rear cylinders. For more on Fleece's Performance Coolant Bypass Kit call us at 1-85.

Kits for MY 2003+ include billet hose brackets.

Complete kit comes with braided hose and AN O-ring fittings to ensure a leak-free installation.

Prevents damaging coolant pressure build up.

Ensures consistent temperatures across all cylinders.

Lowers coolant temperature at the rear cylinders.

This solves the problem before pressure becomes an issue by ensuring consistent temperatures across all six cylinders.įleece Performance Coolant Bypass Kit Features: Our coolant bypass kit adds a secondary thermostat, that unlike other brands, works based on temperature instead of excessive pressure. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure. The rear cylinders on the 5.9 Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures.

Increased Coolant Flow, Decreased Coolant Temperatures Thoroughbred Diesel Part #: FPE-CLNTBYPS-CUMMINS-MAN-SSįitment Notes: 2003-2007 Dodge Cummins 5.9L Manual Manufacturer Part #: FPE-CLNTBYPS-CUMMINS-MAN-SS Product Name: Fleece Performance Coolant Bypass Kit (Coolant Hose Braiding - Stainless Steel) - 2003-2007 Dodge Cummins 5.9L Manual - CLNTBYPS-CUMMINS-MAN-SS

2007 dodge 5.9 cummins rear main seal