Borg Warner 4405 Rear Case Half

This is the rear case half for the Borg Warner 4405 transfer case. The rear bearing wears in the housing bore and the shift rail wears it's bore as well. When this happens the shift fork can disengage the shift cam and the transfer case falls out of gear. The first indication you will get, is a whirring noise when you let off the gas. We have these case halves in stock.

We need to know if your case half has a hole for the speedometer. The hole where the speed sensor goes in is just above the rear output shaft yoke and points towards the driver's side of the vehicle. See picture above that shows the speedometer hole. This hole may not be finished drilled all the way through, in which case you need to order "without hole". Also look at the "Alternate Views" above and let us know if the case is made of aluminum or magnesium. There is a triangle under the hole where the shift rail for the motor comes out of the rear case. Inside that triangle will be an Al for aluminum or Mg for magnesium. Select "With speedometer hole" or "Without speedometer hole", on the upper right side of this page where it asks you to "Choose Your Options". The core charge for the case halves will be refunded when the case is returned to us in rebuildable condition.

Here is the BW4405 front case half.

Here is the special BW4405 fork we have