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SKU #: DSI4RCDK DieselSite 4R100 Transmission Cooler Bypass Delete Kit 99-03 7.3L Ford Powerstroke

Purchase DieselSite 4R100 Transmission Cooler Bypass Delete Kit 99-03 7.3L Ford Powerstroke
    • 1999-2003 7.3L Ford Powerstroke

Description

What's an inexpensive way to ensure your Powerstroke's transmission stays as cool as possible? Easy, this simple to install kit from DieselSite!From 1999-2003, the Ford 7.3L Automatic Transmission (4 ... read more

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What's an inexpensive way to ensure your Powerstroke's transmission stays as cool as possible? Easy, this simple to install kit from DieselSite!

From 1999-2003, the Ford 7.3L Automatic Transmission (4R100) 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 temps. Unfortunately, these bypass tubes commonly fail preventing transmission fluid flow to the cooler. Another design flaw is even when operating perfectly, the bypass never fully closes, meaning not all fluid is ever sent to the cooler, ever.

The result: transmission overheat. Many delete kits are available on the market that eliminates 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 was 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.

IMPORTANT NOTE:
  • Will NOT work on E-Series 4R100's.
  • WILL work on gasoline truck application 4R100's.  

Specifications

  • SkuDSI:4RCDK
  • ManufacturerDieselSite
  • MPNDSI:4RCDK

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Rate DieselSite 4R100 Transmission Cooler Bypass Delete Kit 99-03 7.3L Ford Powerstroke

Reviews may be edited for spelling or grammar inaccuracies and those containing profanity will be removed.

C
Verified Buyer
Easy, clean install
Product was easy to install, and cleanly removed the Transmission bypass on my 2002 F250. No problems or leaks so far.
G
Verified Buyer
Great product
Really easy to install and my transmission is already running cooler. Great product and wish I would of got it earlier.
D
Verified Buyer
Upgrade
Can't wait to install. Hope it helps
Store Reply
Thank you for the review. From what we've seen, it definitely does.
J
Verified Buyer
Great product
Great product!! Fits perfect and keeps my transmisson alot cooler on long heavy hauls
Store Reply
Thank you for the review. Pretty cool that such a simple product can make such a difference, but it does!
Z
Verified Buyer
Great product
Used this to replace the oem cooler bypass loop. Worked great, installed great. No leaks so far. Straight forward and quality.
Store Reply
Thanks so much for the review, very glad that the bypass kit is working so well for you.
A
Verified Buyer
Will definitely recommend it
Awesome easy install works as designed.
Store Reply
Thanks so much for the review and glad it got the job done.
S
Verified Buyer
kept tranny cooler
works perfect so far no leaks
Store Reply
Thanks so much for the review and glad the bypass kit is getting the job done for you.
4 QUESTIONS
E

using this product does the bypass tube remain on the transmission the BD 1600036 says it eliminates the bypass tube?

The Dieselsite cooler bypass delete for the 4R100 comes with the bushings to eliminate the bypass tube, but also with new banjo bolts with no spring and check ball to allow 100% fluid flow to the cooler.

6/27/18
E

installing this by-pass kit does the bypass tube stay in place or is it removed ??

The Dieselsite cooler bypass delete for the 4R100 comes with the bushings to eliminate the bypass tube.

7/1/18
W

he expected drop in TFT's. My TFT's consistently run about 195 to 200 degrees while pulling my camper. I do pull in overdrive when I can keep my rpm's above 1750 and speed at or above 63. Transmission seems to stay the coolest there and temps greatly increase once I go to drive from overdrive. I only use cruise when on flat ground. Otherwise use foot feed throttle.?

If everything is functioning like it should, you are not going to have a massive drop in TFT's. Maybe 5-10 degrees from the slight increase in fluid flow, i would also look at upgrading your transmission cooler to a larger capacity one. DppSands

6/6/19
J

Will this bypass delete work on a 2000 Ford F-250 with the 4R100 and 5.4L 2V engine??

Yes, just won't work on the Van applications. -Sands

8/28/20

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DieselSite 4R100 Transmission Cooler Bypass Delete Kit 99-03 7.3L Ford Powerstroke

DieselSite 4R100 Transmission Cooler Bypass Delete Kit 99-03 7.3L Ford Powerstroke

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