Transmission Cooling

Here's what you need to know:

  • Heat KILLS transmissions.
  • AW4 is one of the strongest transmissions available.   No real reason to upgrade beyond the AW4 unless you are swapping for a v8 WITH a supercharger.    
  • The most affordable upgrade to protect your transmission is to add a supplemental transmission cooler.
  • Stock XJs usually come with a smaller tranny cooler but are insufficient after lifting, locking, and armor plating your XJ.
  • Buy the largest transmission cooler you can fit.    
    • 15" x 7-1/2" x 3/4"
    • B&M model #70268 - 11" x 7-1/4" x 3/4"

Excellent Reads:
Transmission Temp Gauge Installs: