System Features 508 compressor with 7-groove serpentine pulley and polished finish.The 508 compressor is recommended for any Vintage Air system. It pumps 8.4 cubic inches per revolution with a maximum 6000 sustained RPM range. Available in standard or chrome finishes. Fits all Vintage Air brackets. Vehicle Fitment warning California Proposition 65 arrow_drop_down WARNING: California proposition 65