Max LPD4739 4739 40,000 GVW Low Pressure Drop Transmission Oil Cooler with Thermal Bypass

Easy to install. All necessary parts are in the kit. Instructions easy to follow. Price was right. Dropped trans temp from 210 degree to 145 with an 8ft in bed camper on the truck. Would say that is a pretty good drop in temp.

Very little modification needed to install and the cooler performs absolutely wonderful! Installed it on a 2007 Chevy Suburban 5.3L - prior to the installation the vehicle would run upwards of 200 plus degrees while pulling a 26ft travel trailer in warmer weather (85 degrees and up) and now pulling an even larger travel trailer (Whitehawk 30dsqb) in warmer weather it doesn't pass 185 degrees! Awesome product and well built! I did spray paint it black so it would blend in better with the front end through the grill... Other little trick was determining the direction of fluid flow to even hook the unit up. In summary, I highly recommend this product.

This kit does not come with the thermal bypass like advertised. Unfortunately, I installed it after the return window so now I have to purchase the bypass separately.The hardware kit contains several hose fittings. Thankfully two fit into the cooler itself, but the others were assorted sizes and not in pairs.I do not recommend this product.

This so much bigger than the original trans cooler. I had to return mine since it came damaged but I will be ordering a replacement.

Best transmission cooler upgrade you can do besides a trans temp gauge. Went on my 03 silverado I have a 2800 stall in it and b4 I got this pulling my 30 ft camper I seen a high temp of 240 which can toast a tranny quick at that temp.and now pulling it it will NOT go above 175 on a 95f day. I didn't use the thermostat thing as cooler already has a valve in it to let cold fluid pass thru. Gonna need at least 2 qts of atf to compensate for the bigger cooler got more fluid goin thru so if it feels sluggish check n add fluid

Only lasted about 5 months then it broke from the fins. Worked up until started leaking.

this transmission oil cooler is legit, installed a 223 cam, and 411 gears and 3000 stall converter, took it for a spin on june 20,2020 outside temp was 78° my transmission oil temp went up to 250° After tru cool 40k install took the same route on June 26 only this time the outside temp is 98° and my transmission was 145° WOW iam very impressed!!!

This cooler dramatically decreased my trans temps in my 2010 Silverado w a 5.3 and 6L80 transmission when towing my 28ft camper. Temps dont go over 170 degs in the middle of summer 95deg days regardless on stop and go traffic or going 80 down the interstate. Would be the first upgrades I'd make when hauling a larger trailer.