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1994-2018 Cummins 5.9L/6.7L Coolant Bypass Service Kit (FPE-CLNTBYPS-CUMMINS-SER-KIT)

Original price $29.62 - Original price $29.62
Original price
$29.62 - $29.62
Current price $29.62

Complete kit to service your Fleece Performance Coolant Bypass - Includes all O-rings, fasteners, and a new thermostat.


  • Two thermostats included to service all production years, you will only use one (1) of the included thermostats when replacing your bypass thermostat.
  • This kit does not include the Cummins thermostat.
  • The kit includes 3 new square cut O-rings and 1 new standard O-ring as well as 2 new O-rings for each of AN fittings.
  • When used with MY94 - MY2002 kits, not all O-rings will be utilized.


Most orders are shipped 1-2 weekdays after an order is placed, depending on availability. Some products are shipped directly from manufacturers and may be subject to duty and taxes.


Not all products are stocked in house. Please check for availability as some products may be backordered.