I bought this for my Avalanche and never installed it before selling it last July.
It comes with everything you need to do an OEM type install on a GM truck. It comes with the thermal bypass valve if you live in the colder climates.
as well as OTC 7937 Transmission Oil Cooler Line Disconnect Tool for GM and Hayden Automotive 397 Transmission Line Fitting Kit.
It will install on any truck, SUV or car that needs some extra cooling.
NEW Long Tru-Cool Max transmission cooler P/N LPD4739. This cooler is rated at 40,000 GVW and measures 8.5"x22.75"x1.25". This is a stacked plate, low pressure drop unit. This cooler has 3/8" inverted flare fittings and comes with a thermal bypass valve so you can use this cooler in cold weather and the fluid will bypass until the transmission comes up to operating temperatures. This is the ultimate cooler for heavy towing and is a must for heavy duty applications, including racing. Heat is what kills an automatic transmission. If you want to extend the life of your transmission and avoid or prolong a costly rebuild, this is very cheap insurance. All parts and instructions are included to mount and plumb this cooler.
They are selling for $165 on Amazon shipped so I'll do $150 as I opened the box to have a look a it it when it arrived.
$150 USD shipped.