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XD380 XDP Coolant Bypass Kit - Dodge 5.9L/6.7L Cummins 2003-2018

SKU: XD380
Mftr. Part#: XD380
The XDP Coolant Bypass Kit will help keep the engine cool in your 2003-2007 5.9L Cummins (Manual) or your 2007.5-2018 6.7L Cummins (Automatic or Manual) Ram truck.

PRODUCT SPECS (click to expand)

Attribute nameAttribute value
Truck Type/ModelDodge
Product TypeCoolant Bypass Kit
BrandXDP (Xtreme Diesel Performance)


The XDP Coolant Bypass Kit will help keep your engine cool in your diesel truck, on modified engines coolant temperature and pressure increases often result in a lack of coolant flow. The lack of coolant flow starves the rear cylinders and creates a pressure build-up that blows out the freeze plugs on the block. XDP engineers their coolant bypass kit with a secondary thermostat that is actuated by temperature, not pressure like other kits. The XDP coolant bypass kit is built with a Stant SuperStat Thermostat, the SuperStat has a unique v-notch non-linear design to help reduce cycling by precisely metering the amount of coolant needed to maintain proper temperatures. As a result, you get more efficient temperature control leading to better engine efficiency and a longer engine lifespan. When the thermostat opens due to temperature it helps to alleviate excessive pressure before it starts by keeping coolant temperatures consistent across all cylinders.


  • Complete installation kit
  • Includes stant secondary thermostat
  • Ensures even coolant temperatures across all cylinders
  • 2003-2007 Manual transmission only
  • 2007.5-2018 Automatic & manual Transmission