ats diesel

ATS Thermal Bypass Valve Upgrade with Billet Filter Coupler - 19-22 Cummins

Thoroughbred Sku #: ATS3100052464
Manufacturer Sku #: 310-005-2464

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Product Details

Product Name: Thermal Bypass Valve Upgrade with Billet Filter Coupler
Manufacturer: ATS
Manufacturer Part #: 3100052464
Thoroughbred Diesel Part #: ATS3100052464
Fitment Notes: 2019-22 Ram 6.7L Cummins with 68RFE or Aisin AS69RC Transmissions, and Dodge HEMI with 545RFE, 65RFE, or 66RFE Transmissions

This is a must for any truck that has a 68-RFE or Aisin AS69RC transmission in it. Dodge decided to incorporate a transmission cooler by pass valve into the cooling system of the 68-RFE and Aisin AS69RC that bypasses the transmission cooler during cold operation.
The intent is to force the transmission to warm up faster, the reality is this bypass valve leaks and sticks in the bypass position in almost every case causing the transmission cooler flow to bypass the trans cooler essentially eliminating the trans cooler from the circuit. This causes a severe damage to the transmission over time.
The ATS cooler block replaces the faulty design eliminating the bypass valve and ensures 100 percent of the trans cooler flow is forced through the trans cooler. In every case this substantially reduces transmission temperatures.


  • ATS Thermal Bypass
  • Cooler Block Clamp Plate
  • ATS 68RFE Billet Aluminum Filter Coupler