Sponsored

Anyone install Larger Cooling Upgrades on Hybrid 4Runner?

Hadelson

Trailhunter
Member
First Name
Hugo
Joined
Sep 3, 2025
Threads
4
Messages
24
Reaction score
5
Location
Pennsylvania
Vehicle(s)
24 Rav4, 24 RTR Spec3 Mustang
Have a 25 4Runner Trailhunter. Has anyone upgraded to larger Intercooler and installed additional Transmission Cooler.

If yes, would like to hear your experience and how its working
Sponsored

 

SC4Runner

TRD Off-Road Premium
Well-known member
First Name
Fred
Joined
Mar 28, 2025
Threads
5
Messages
171
Reaction score
162
Location
South Carolina
Vehicle(s)
Toyota 4Runner, GMC Truck, Mercury Grand Marquis
@SXTH Element sells an aftermarket intercooler, so most likely someone has installed that. I’m not so sure about a transmission cooler. I’ve seen others ask about one, but I’m doubtful anyone has even developed one of those yet.
 
OP
OP

Hadelson

Trailhunter
Member
First Name
Hugo
Joined
Sep 3, 2025
Threads
4
Messages
24
Reaction score
5
Location
Pennsylvania
Vehicle(s)
24 Rav4, 24 RTR Spec3 Mustang
Yes, I've seen the SXTH intercooler advertised. It does look robust.
 

mjssss

Trailhunter
Active member
First Name
Mike
Joined
Oct 9, 2025
Threads
7
Messages
38
Reaction score
9
Location
NM
Vehicle(s)
Trailhunter on-order
I’m curious on the trans cooler… temperature is the downfall of transmissions
 

SC4Runner

TRD Off-Road Premium
Well-known member
First Name
Fred
Joined
Mar 28, 2025
Threads
5
Messages
171
Reaction score
162
Location
South Carolina
Vehicle(s)
Toyota 4Runner, GMC Truck, Mercury Grand Marquis
I bought the intercooler from SXTH Element. I’m waiting on my down pipe from OTT and will have them both installed at the same tim, my next oil change.
 

AdFour

Well-known member
Joined
Jun 7, 2025
Threads
2
Messages
105
Reaction score
77
Location
Washington
Vehicle(s)
4runner
Mishimoto just came out with one for the 4th gen taco. Lots of chat on the taco forums about that issue as well. Wonder how much needs to be modified for use in the 4runner if any.



https://www.mishimoto.com/transmission-cooler-toyota-tacoma-2024.html

One thing I don't like, haven't dug into this too much yet (so I could be wrong). Theres claims of improved cooling but they don't mention much? Thats the main quantifiable value we care about and just glossed over.
 

Scrappopatamus

TRD Pro
Well-known member
First Name
Barry
Joined
Aug 25, 2025
Threads
3
Messages
195
Reaction score
128
Location
Midway KY
Vehicle(s)
'18 TRD Pro '25 TRD Pro '25 TRD ORPMAX
You should be able to search. I recall someone a while back who had a thread regarding doing this
 

mjssss

Trailhunter
Active member
First Name
Mike
Joined
Oct 9, 2025
Threads
7
Messages
38
Reaction score
9
Location
NM
Vehicle(s)
Trailhunter on-order
May I ask why? What is the driving need over the OEM systems?
It’s not going to benefit 90% of driving, but the cases when towing—this is when you create lots of heat in the transmission. If not cooled well, this is the downfall of transmissions. Within 100k miles, very unlikely to cause issues, but if you’re interested in beyond that…

I don’t know what the stock cooling is, but I doubt it’s much.

this is why F-150’s and bigger will have dedicated transmission oil coolers
 
OP
OP

Hadelson

Trailhunter
Member
First Name
Hugo
Joined
Sep 3, 2025
Threads
4
Messages
24
Reaction score
5
Location
Pennsylvania
Vehicle(s)
24 Rav4, 24 RTR Spec3 Mustang
Mishimoto just came out with one for the 4th gen taco. Lots of chat on the taco forums about that issue as well. Wonder how much needs to be modified for use in the 4runner if any.



https://www.mishimoto.com/transmission-cooler-toyota-tacoma-2024.html

One thing I don't like, haven't dug into this too much yet (so I could be wrong). Theres claims of improved cooling but they don't mention much? Thats the main quantifiable value we care about and just glossed over.

Agree, also interested in fit using the SXTH intercooler
Sponsored

 
 







Top