1981 GMC K3500 equipped with 7.4L V8 Gas OHV, 5.7L V8 Gas OHV, 4.8L L6 Gas OHV
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Professional w/ 13 X 3 1/2 Brake Drum Reservoir Cap Is Rectangular Bore 1-15/16in
1981 GMC K3500 equipped with 7.4L V8 Gas OHV, 5.7L V8 Gas OHV, 4.8L L6 Gas OHV
Professional w/ 13 X 3 1/2 Brake Drum Reservoir Cap Is Rectangular Bore 1-15/16in