1974 GMC G25/G2500 Van equipped with 5.7L V8 Gas OHV, 4.8L L6 Gas OHV, 4.8L L6 Gas, 4.1L L6 Gas OHV, 4.1L L6 Gas
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AC System Seal Kit Caps and Valve Core Seal Kit w/ R12 or R134a Retrofit System
1974 GMC G25/G2500 Van equipped with 5.7L V8 Gas OHV, 4.8L L6 Gas OHV, 4.8L L6 Gas, 4.1L L6 Gas OHV, 4.1L L6 Gas
AC System Seal Kit Caps and Valve Core Seal Kit w/ R12 or R134a Retrofit System