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Looking for aftermarket parts to modify or upgrade your GMC C35 with spark plugs? At Tunersports.com we carry a huge selection of the top name brand performance spark plug parts and accessories.
 OUT OF STOCK 7588The improved throttle response, superior anti-fouling and high-ignitability makes Iridium IX® the ideal choice for any performance enthusiast. Iridium's high melting point is perfectly suited to today's high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability.... NGK Iridium IX Spark Plug Box of 4 (YR55IX) 1975-1975 GMC C35 Base / High Sierra / Sierra Classic / Sierra Grande 1977-1978 GMC C35 Base / High Sierra / Sierra Classic / Sierra Grande $54.25 |
 OUT OF STOCK 7240NGK V-Power plugs feature a unique v-cut in the center electrode that directs the spark to the edge of the electrode, helping the spark develop more rapidly, increasing ignitability and reducing quenching.... NGK V-Power Spark Plug Box of 4 (YR55) 1975-1975 GMC C35 Base / High Sierra / Sierra Classic / Sierra Grande 1977-1978 GMC C35 Base / High Sierra / Sierra Classic / Sierra Grande $35.99 |