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.

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.

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.

When I made my purchase it was fulfilled by Remco Transmission out of Texas. The description read: "Tru-Cool Max LPD4739 4739 40,000 GVW Low Pressure Drop Transmission Oil Cooler with Thermal Bypass." Tru-Cool uses two part number for the same cooler. Part number 4739 is with a thermal bypass and is more expensive. Part number 47391 is WITHOUT the bypass which is cheaper.When I received the cooler there was no part number on the box. There was no thermal bypass in the box when I opened it. When I contacted Remco through Amazon, Remco told me that the picture does not show a bypass and they do not stock the cooler with a bypass (despite the description). Remco offered me $25 off or the option to return the cooler. The bypass is about $60 available separately, so I returned it.If need a cooler with a bypass order elsewhere. If you want a cooler without a bypass order elsewhere, because you can find it cheaper than Remco. Remco is selling you the more expensive description but shipping the cheaper part. At best Remco is incompetent, at worst this is out right fraud.

If your in need of a trans cooler, this is the one works great, like no other. Pulling a travel trailer trans temp was always on the riseDuring 100deg summer in Texas my trans runs pulling trailer 160deg or below

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

Arrived quickly and installed easily! Keeps my transmission temp well below 200f on a Chevy Silverado 5.3

This is one of the better tranny coolers you can buy. I installed it on my Chevy Express 3500 that didn't come with a aux. transmission cooler besides the one built in to the radiator. I like that they include the thermal bypass since I live in a cold northern state. It allows the transmission to warm up faster on those freezing days than if you just ran directly to the cooler. I ran the new cooler in line with my radiator cooler. I checked my transmission temps on a hot day when I was pulling my boat, and the temp never got over about 170°.I deducted one star since the hose is probably too short for most larger vehicles and I needed to buy another piece to install it.