External Transmission Cooler Install (3rd Gen 4runner/1st Gen Tacoma)

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In this video, we share with you how I installed a Hayden 699 transmission cooler on my 98 Toyota 4runner. For this install, instead of running the cooler in-series with the stock cooler in the radiator, I chose to bypass the stock cooler. The way I installed this cooler would work for any 3rd Gen 4runner and also work for any 1st Gen Tacoma. If you have another make or model vehicle, hopefully this video gives you a good idea on how to accomplish the job. Happy Wrenching!

*Related Transmission Cooler Install Videos*
*Transmission Cooler Install on my 2000 4runner ran in-series with the stock radiator cooler:    • Transmission Cooler Install with Radi...  

*Transmission Cooler Install on a 2008 FJ Cruiser bypassing the stock cooler:
   • Transmission Cooler Installation (Toy...  


*PARTS*
*Hayden 699 Transmission Cooler
https://amzn.to/3vflSjJ

*Hayden Metal Mounting Bracket Kit
https://amzn.to/3rWW1ce

*3/8" Transmission Cooler Hose - 3' (I'd suggest getting 6' so two orders of this).
https://amzn.to/3ES8n9f

*Valvoline Max Life Full Synthetic ATF
https://amzn.to/2Oaco0F

*3/4" Heater Hose - 6' (Used for abrasion protection)
https://amzn.to/3IMgAhh

**Valvoline Max Life Full Synthetic ATF
https://amzn.to/2Oaco0F

*Magnefine 3/8" Magnetic In-line Transmission Filter
https://amzn.to/35p6heN

*This looks like a nice custom bracket for your trans cooler install. I learned about it on 10/12/23. It doesn't say it fits the Hayden 699 cooler, but it fits other cooler made by Hayden and one from Derale. https://iconic-fabrication.myshopify....


*HELPFUL TOOLS*
If you're looking for other tools not used in this video, check out Timmy's Master Tool List.
https://www.amazon.com/shop/timmythet...

*Scan Gauge (So you can monitor your trans temp)
https://amzn.to/3DTtp5M

*Plastic Spudger Tool
https://amzn.to/35c6GCc

*1/4" and 3/8" Flex Head Ratchet Set
https://amzn.to/2ql8nNA

*1/4" Drive Socket Set
https://amzn.to/2PfmaQb

*3/8" Drive 6 Point Metric Standard Socket Set
https://amzn.to/32WIh0M

*3/8” Drive Regular Extension Set
https://amzn.to/2OehCao


*1/4” Drive Regular Extension Set
https://amzn.to/2O9nl2x


*Ball Pein Hammer
https://amzn.to/2W5eHV5

*Milwaukee M12 3/8” Cordless Extended Reach Ratchet
https://amzn.to/3kOsUS6


*Milwaukee M12 Battery
https://amzn.to/3FJZO1j

*Milwaukee M12 High Capacity Battery
https://amzn.to/2HEFTpu


*Milwaukee M12 Battery Charger
https://amzn.to/2uo2o9x

*Adjustable Spark Plug Wire Puller
https://amzn.to/2MKWrMw

*90 Degree Needle Nose Pliers
https://amzn.to/2VYUro8


*3 Piece Channel Lock Set
https://amzn.to/33Hj4rE


*Small Pick Tool Set
https://amzn.to/2MyN4AH

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