View our Specials! Coupon Code: SaveIn2026
Looking for aftermarket parts to modify or upgrade your 1981 GMC C1500 with valve seals? At Tunersports.com we carry a huge selection of the top name brand performance valve seal parts and accessories.
 IN STOCK - DROPSHIPS 501-12COMP Cams offers a complete line of valve stem Seals, from the stock GM "O-Ring" to the positive-stop PTFE Seal. These Seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The "O-Ring" Seals use the standard retainer and oil splash shi... COMP Cams Valve Seals 11/32in O Ring 1979-1982 GMC C1500 Sierra Grande / Street Coupe 1979-1984 GMC C1500 Base / High Sierra / Sierra Classic $33.44 |
 IN STOCK - DROPSHIPS 501-16Fits: 11/32" Valve Stems / OE-Size Valve Guides (.400" Outer Diameter). Valves Seals keep unwanted oil from entering the combustion chamber through clearance in the valve guides. Use standard o-ring Seal retainer and oil splash shield. Requires no machining.... COMP Cams Valve Seals 11/32in O Ring 1980-1982 GMC C1500 Sierra Grande / Street Coupe 1980-1986 GMC C1500 Base / High Sierra / Sierra Classic $34.74 |