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4R100 Cooler Bypass Delete Kit

This item requires Vehicle Fitment, please select Vehicle first!
OR if you know the Part Number you need, select from Options below.
Part Number: JW-BypassDelete
Availability: In Stock
Price: $34.95
The 4R100 has an external cooler bypass tube that allows transmission fluid to bypass the transmission cooler.  These bypass tubes are known to malfunction or stick and allow fluid to bypass the cooler when it shouldn't be.  This kit eliminates the bypass tube off the side of the 4R100 transmission, forcing ALL of the fluid to be sent through the transmission cooler.  It's a great addition to a truck with an upgarded transmission cooling setup (additional or larger than stock cooler) and aftermarket transmission temperature gauge. New Ford seals are INCLUDED with this kit.

Torque Values:
Rear Fitting : 27ft/lb
Front Fitting : 22ft/lb

Does NOT fit E-Series Vans!

Customer Reviews

(5.00)stars out of 5
# of Ratings: 2
1. on 9/23/2018, said:
5 stars out of 5
Bypass worked great, Good value. Why didnt the factory do this. Great mod
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(5 people found this comment helpful, 1 did not)
2. on 6/6/2013, said:
5 stars out of 5
Very good product, new transmission with new bypass and when I installed this product trans was 20* cooler, wish they were black like the picture. David from Chino Hills Ca.
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(5 people found this comment helpful, 0 did not)
Showing comments 1-2 of 2
Frequently Asked Questions
Question:Do I need to remove the Check Ball and Spring from the rear banjo fitting, before installing it with the bypass delete kit? - Dennis (10/16/2015)
Response:No, there is no need to alter or modify the rear fitting. The check ball is there to prevent torque converter drain-back. Removing it will not hurt anything, but if the vehicle sits for extended periods of time, the next time it is started, it will need to idle for a few seconds longer before the transmission will engage...due to the fact that the pump has to refill the torque converter first.

4R100 Cooler Bypass Delete Kit fits the following vehicle(s):

  • 2000 Ford Excursion 7.3L
  • 2001 Ford Excursion 7.3L
  • 2002 Ford Excursion 7.3L
  • 2003 Ford Excursion 7.3L
  • 1999 Ford F250/350 Super Duty 7.3L
  • 1999.5 Ford F250/350 Super Duty 7.3L
  • 2000 Ford F250/350 Super Duty 7.3L
  • 2001 Ford F250/350 Super Duty 7.3L
  • 2002 Ford F250/350 Super Duty 7.3L
  • 2003 Ford F250/350 Super Duty 7.3L
  • 1999 Ford F450 Super Duty 7.3L
  • 1999.5 Ford F450 Super Duty 7.3L
  • 2000 Ford F450 Super Duty 7.3L
  • 2001 Ford F450 Super Duty 7.3L
  • 2002 Ford F450 Super Duty 7.3L
  • 2003 Ford F450 Super Duty 7.3L
  • 1999 Ford F550 Super Duty 7.3L
  • 1999.5 Ford F550 Super Duty 7.3L
  • 2000 Ford F550 Super Duty 7.3L
  • 2001 Ford F550 Super Duty 7.3L
  • 2002 Ford F550 Super Duty 7.3L
  • 2003 Ford F550 Super Duty 7.3L