This custom adapter allows the GM Harrison Stepped R4 compressor AC lines to connect to the Sanden SD7 6 Bolt Compressor. This allows the factory AC line to be used along with your Cummins diesel conversion or swap.
GM used the Harrison R4 compressor through the 1995 model year.
Are you adapting the AC line in a 1996-99 GM Truck or SUV? Use the 1995 AC drier and the 1995 AC lines. In 1995, GM switched the AC fittings and lines to metric threads. For 1993 and earlier, GM used standard thread AC lines and fittings.
Our Kit comes with the following components:
- Sanden SD7 6 Bolt horizontal compressor head
- Stepped R4 to Sanden line adapter
- M10x45 Flange Bolt* (see below)
- QTY 2 green R134 compatible compressor head orings
Please note: Factory GM Gas AC lines will need to be slightly bent so that the rubber hoses are not kinked. In some cases, Big Block or GM Diesel AC lines will need to be sourced. Reference the product images for proper routing.
*Depending on which model Sanden AC compressor you have, you may need to source the correct length bolts to install the horizontal compressor head provided in the kit.