1990 GMC P3500 equipped with 7.4L V8 Gas OHV, 6.2L V8 Diesel OHV, 5.7L V8 Gas OHV, 4.3L V6 Gas OHV, 3.9L L4 Diesel OHV Turbo
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16MM, ONE DIRECTION FLOW VALVE, 1 PORT
1990 GMC P3500 equipped with 7.4L V8 Gas OHV, 6.2L V8 Diesel OHV, 5.7L V8 Gas OHV, 4.3L V6 Gas OHV, 3.9L L4 Diesel OHV Turbo
16MM, ONE DIRECTION FLOW VALVE, 1 PORT