1975 GMC K15 equipped with 6.6L V8 Gas OHV, 5.7L V8 Gas OHV, 4.8L L6 Gas OHV, 4.1L L6 Gas OHV
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Radiator Cap/Cooling System Tester Adapter System adapter on tester
1975 GMC K15 equipped with 6.6L V8 Gas OHV, 5.7L V8 Gas OHV, 4.8L L6 Gas OHV, 4.1L L6 Gas OHV
Radiator Cap/Cooling System Tester Adapter System adapter on tester