Here’s everything you need to convert your 1988-95 GM R4 AC compressor to a modern Sanden Mini compressor Custom-built for your OBS Chevy, this Conversion Kit includes everything you need to upgrade from your troublesome GM R4 compressor to a modern, efficient and reliable Sanden Mini compressor. Product Overview Say goodbye to R4 compressor maintenance hassles. Our conversion kit makes it easy to upgrade your 1988-1995 OBS truck to a reliable Sanden Mini compressor. Available in three year-specific versions ('88-'90, '90-'93, and '94-'95), this kit eliminates the hassle of sourcing individual parts and guessing what will fit. Everything is engineered to work together: a precision-engineered mounting bracket that allows reuse of your factory OEM SBC R4 AC compressor bracket, custom fittings designed specifically for your truck (not generic universal parts), and pre-crimped A/C lines that bolt right up to your factory dryer and condenser. The compact Sanden Mini compressor provides clearance for tall valve covers while delivering the long-term reliability this compressor is known for. Installation is straightforward: bolt it in, add a new belt, connect the lines, and charge the system. Keep your OEM A/C configuration while gaining the reliability and performance of a modern Sanden compressor at an affordable price. Benefits: Bolt-on installation with no modifications required Year-specific fitment for perfect compatibility Reuses factory OEM SBC R4 AC compressor bracket Compact design provides clearance for tall valve covers Maintains original A/C system configuration Eliminates R4 maintenance issues One complete kit replaces multiple store runs and shipping delays Quality-built components for long-term reliability Cost-effective upgrade solution Ready to charge and go Also compatible with Kwik Performance BBC serpentine conversion plates: K10014 K10473 K10543 Click on image to view our OBS condenser guide