Overstock Deal 4r100 Transmission Cooler Bypass Delete Kit Slash 50% Off The Price [9ajCAKtR]

From 1999-2003 the Ford 4R100 automatic transmission had an external cooler bypass tube that redirected transmission fluid from the pump output back to the return line of the transmission.  The bypassing of the cooler was supposed to happen until the fluid reached operating temperatures.  

Unfortunately, these bypass tubes commonly fail which prevents transmission fluid flow to the cooler.  Another design flaw is, even when operating perfectly, the bypass never fully closes.  This means not all fluid is ever sent to the cooler... ever.

The result?  Your transmission will overheat.

Many delete kits are available on the market that eliminate the bypass tube and the common failure.  However, these kits do not address the restriction in the banjo bolt.  If you look at the cut away photo of the banjo bolt, you can see the spring and check ball which restricts about 75% of the fluid flow to the cooler.  The spring and check ball were designed to allow the proper function of the cooler bypass tube.  

Once the bypass tube is deleted, this check ball and spring are no longer needed.