1974 GMC G35/G3500 Van equipped with 5.7L V8 LPG OHV, 5.7L V8 Gas OHV, 4.8L L6 LPG OHV, 4.8L L6 Gas OHV, 4.1L L6 LPG OHV, 4.1L L6 Gas OHV
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Radiator Cap/Cooling System Tester Adapter System adapter on tester
1974 GMC G35/G3500 Van equipped with 5.7L V8 LPG OHV, 5.7L V8 Gas OHV, 4.8L L6 LPG OHV, 4.8L L6 Gas OHV, 4.1L L6 LPG OHV, 4.1L L6 Gas OHV
Radiator Cap/Cooling System Tester Adapter System adapter on tester