For H1C, WH1C model Holset turbos
This upgrade will convert your stock H1C or WH1C turbo into a H1C/H1E or WH1C/WH1E/40 hybrid turbo. (This upgrade utilizes an 6-blade wheel and requires no machine work ... backplate comes with kit)
This housing and wheel mounts to your stock 12 valve 1992-1994 (It only bolts directly to the 91 trucks that came equipped with air-to-air charge air cooler.) Your stock compressor wheel measures 56mm unless your truck is a one ton. This upgrade wheel measures 60mm.
No internal turbocharger modifications to your turbo are required.
Note: Some 1994 WH1C turbos have been replaced in the field with HX35W turbos so verify your turbo part number with us.
$250 Core charge applies. Please call us for a correct return address before shipping your core.
Cores due back within 30 days. After 30 days you are only eligible for a $125 core refund.