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A graphic showing the ultimate OBS R4 to Sanden Complete Conversion Package with all of its components

AC compressor upgrade, AC Hose Kits, Chevy OBS, Chevy OBS AC hoses, Kwik AC bracket, Kwik AC hose kit, R4 to Sanden Conversion, Sanden mini AC compressor

The Ultimate OBS R4-to-Sanden Conversion

Ditch the leaky pancake with our ultimate OBS R4-to-Sanden Conversion kit!

Wayne Powell | June 28, 2026