8 speed JK with a 3.6L and a Atlas 4 Speed

Here we have a 2012 Jeep JK with a 3.6L and a Atlas 4 speed t case and this guy wanted more low gears so we put a 8HP45 transmission from a Dodge Ram 1500 4x4 Truck with a 471 low First Gear and it worked out great. One thing about the 8HP45 and HP70 is it has a front and rear speed sensor in the transmission so it does not relay on the wheel speed sensors for the transmission, so you can now put a 4 speed Atlas in a 2012-2018 Jeep JK where you could not before, also you can shut off the Traction Control with a bypass switch.
8 speed in a 3.6L JK 845RFE
Need to check the transmission fluid while the engine is running and the transmission is at 100 degrees.



 Transfer Case cable mount 52121832AC $30.00

Transmission cooler, HDA-679 $80.00

Transmission cooler lines 68291875AB for the 8 speed $270.10

2 Transmission cooler fittings 68489743AA $50.00

8 Speed wiring $1500.00

8 Speed floor plate and spacers 4

Truck Transmission mount to t Case adapter 68147344AA $110.00

8 Speed steel trans pan Jeep JT 68408606AB $200.00

Transmission oil 68218925AB $30.00 needs 10 quarts

The transmission new can cost $4000.00

Low mile used $1200.00

Shifter $200.00 used

Bezel $50.00

T Case used $500.00 non Rubicon

Gear gauge $150.00

Plate B $50.00

Transmission Cooler Mounts part # JKTCM $50.00