Fleece Performance 1994-2018 Dodge 2500/3500 Cummins Coolant Bypass Service Kit


Complete kit to service your 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.
Part Type:
Engine Cooling