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Looking for aftermarket parts to modify or upgrade your 1978 GMC C15 with valve covers? At Tunersports.com we carry a huge selection of the top name brand performance valve cover parts and accessories.
 IN STOCK - DROPSHIPS 4185The Edelbrock #4185 Classic Series Valve Covers are designed for Chevy Big-Block V8 1965 & Later applications. Edelbrock first made these aluminum valve covers in the late '50s and they're still a classic. Made of heavy-gauge sand-cast aluminum, Overall height is measured from base to top at the hig... Edelbrock Valve Cover Classic Series Chevrolet 1965 and Later 396-502 V8 Polshed 1975-1978 GMC C15 Base / High Sierra / Sierra Classic / Sierra Grande 1977-1978 GMC C15 Heavy Half 1978-1978 GMC C15 Street Coupe $483.79 |
 IN STOCK - DROPSHIPS 41853Edelbrock part #41853 Classic Series Valve Covers are designed for Chevy Big-Block V8 1965 & Later applications and have a Black finish. Edelbrock first made these aluminum valve covers in the late '50s and they're still a classic. Made of heavy-gauge sand-cast aluminum, Overall height is measured f... Edelbrock Valve Cover Classic Series Chevrolet 1965 and Later 396-502 V8 Black 1975-1978 GMC C15 Base / High Sierra / Sierra Classic / Sierra Grande 1977-1978 GMC C15 Heavy Half 1978-1978 GMC C15 Street Coupe $437.18 |
 IN STOCK - DROPSHIPS 41859Edelbrock part #41859 Classic Series Valve Covers are designed for Chevy Big-Block V8 1965 & Later applications and have a Satin finish. Edelbrock first made these aluminum valve covers in the late '50s and they're still a classic. Made of heavy-gauge sand-cast aluminum, Overall height is measured f... Edelbrock Valve Cover Classic Series Chevrolet 1965 and Later 396-502 V8 Satin 1975-1978 GMC C15 Base / High Sierra / Sierra Classic / Sierra Grande 1977-1978 GMC C15 Heavy Half 1978-1978 GMC C15 Street Coupe $336.93 |
 IN STOCK - DROPSHIPS 4275The Edelbrock #4275 Elite II Valve Covers are designed for Chevy Big-Block V8 1965 & Later applications. This new line of Elite II valve covers feature a design that is influenced by the original Elite Series originally released in 1985, but with a new modern take on this classic look. They're made ... Edelbrock Valve Cover Elite II Chevrolet 1965 and Later 396-502 Big Block V8 Polished 1975-1978 GMC C15 Base / High Sierra / Sierra Classic / Sierra Grande 1977-1978 GMC C15 Heavy Half 1978-1978 GMC C15 Street Coupe $269.93 |
 IN STOCK - DROPSHIPS 4480The Edelbrock #4480 Signature Series Valve Covers are designed for Chevrolet 396-502 V8 '65 & later applications. Engineered for function and styled for great looks, Signature Series valve covers have stock-style breather baffles that prevent oil passage to the PCV valve. These quality valve covers ... Edelbrock Valve Cover Signature Series Chevrolet 1965 and Later 396-502 V8 Low Chrome 1975-1978 GMC C15 Base / High Sierra / Sierra Classic / Sierra Grande 1977-1978 GMC C15 Heavy Half 1978-1978 GMC C15 Street Coupe $138.44 |
 OUT OF STOCK 4680The Edelbrock #4680 Signature Series Valve Covers are designed for Chevrolet 396-502 V8 '65 & later applications. Engineered for function and styled for great looks, Signature Series valve covers have stock-style breather baffles that prevent oil passage to the PCV valve. These quality valve covers ... Edelbrock Valve Cover Signature Series Chevrolet 1965 and Later 396-502 V8 Chrome 1975-1978 GMC C15 Base / High Sierra / Sierra Classic / Sierra Grande 1977-1978 GMC C15 Heavy Half 1978-1978 GMC C15 Street Coupe $145.18 |
 IN STOCK - DROPSHIPS 4683The Edelbrock #4683 Signature Series Valve Covers are designed for Chevrolet 396-502 V8 '65 & later applications. Engineered for function and styled for great looks, Signature Series valve covers have stock-style breather baffles that prevent oil passage to the PCV valve. These quality valve covers ... Edelbrock Valve Cover Signature Series Chevrolet 1965 and Later 396-502 V8 Tall Black 1975-1978 GMC C15 Base / High Sierra / Sierra Classic / Sierra Grande 1977-1978 GMC C15 Heavy Half 1978-1978 GMC C15 Street Coupe $150.76 |
 IN STOCK - DROPSHIPS VS38305MAHLE(R) gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.... MAHLE Original Buick Apollo 75 Valve Cover Set 1978-1978 GMC C15 Base / High Sierra / Sierra Classic / Sierra Grande / Street Coupe $42.13 |
 OUT OF STOCK VS38305RMAHLE(R) gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.... MAHLE Original Buick Apollo 75 Valve Cover Set 1978-1978 GMC C15 Base / High Sierra / Sierra Classic / Sierra Grande / Street Coupe $47.82 |
 IN STOCK - DROPSHIPS VS38420MAHLE(R) gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.... MAHLE Original Chevrolet Bel Air 69-65 Valve Cover Set 1975-1978 GMC C15 Base / High Sierra / Sierra Classic / Sierra Grande 1977-1978 GMC C15 Heavy Half 1978-1978 GMC C15 Street Coupe $50.08 |
 IN STOCK - DROPSHIPS VS38420RMAHLE(R) gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.... MAHLE Original Chevrolet Bel Air 69-65 Valve Cover Set 1975-1978 GMC C15 Base / High Sierra / Sierra Classic / Sierra Grande 1977-1978 GMC C15 Heavy Half 1978-1978 GMC C15 Street Coupe $46.07 |
 IN STOCK - DROPSHIPS VS38420TCMAHLE(R) gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.... MAHLE Original Chevrolet Bel Air 69-65 Valve Cover Set 1975-1978 GMC C15 Base / High Sierra / Sierra Classic / Sierra Grande 1977-1978 GMC C15 Heavy Half 1978-1978 GMC C15 Street Coupe $66.09 |
 IN STOCK - DROPSHIPS VS39693MAHLE(R) gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.... MAHLE Original Buick Apollo 75-73 Valve Cover Set 1975-1978 GMC C15 Base / High Sierra / Sierra Classic / Sierra Grande 1977-1978 GMC C15 Heavy Half 1978-1978 GMC C15 Street Coupe $44.41 |
 IN STOCK - DROPSHIPS VS39755MAHLE(R) gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.... MAHLE Original Buick Apollo 75 Valve Cover Set 1975-1978 GMC C15 Base / High Sierra / Sierra Classic / Sierra Grande 1977-1978 GMC C15 Heavy Half 1978-1978 GMC C15 Street Coupe $39.33 |