1988 GMC P4500 equipped with 4.8L L6 Gas OHV, 4.3L V6 Gas OHV, 3.4L 6 Diesel Turbo
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AC System Seal Kit Caps and Valve Core Seal Kit w/ R12 or R134a Retrofit System
1988 GMC P4500 equipped with 4.8L L6 Gas OHV, 4.3L V6 Gas OHV, 3.4L 6 Diesel Turbo
AC System Seal Kit Caps and Valve Core Seal Kit w/ R12 or R134a Retrofit System