Cooling Upgrade Kit for H1 HUMMERS with the 6.5 Diesel. This kit will dramatically reduce operating temps and save your engine.

Easy, do it yourself installation with basic hand tools. This kit is a "plug and play" installation for all 97 and newer H1's. It requires minor modification to the harness supplied for earlier years.

Includes 1650 cfm booster fan, mounting hardware, complete pre-made harness for a "plug and play" installation. Harness includes fuse holder with 30a fuse, relay and all connectors. We also include our 180 high flow thermostat upgrade and a bottle of Diesel Water Wetter. Booster fan operates when the a/c is on, when extra cooling is needed most.

A must have for H1 HUMMERS.

Water Wetter cannot be shipped by air freight. Ground only.

Please specify your year H1 so we can supply the correct thermostats. If no year is specified, we will supply the dual stats for the 97+ H1's