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Looking for aftermarket parts to modify or upgrade your 1978 GMC K25 with valve cover gaskets? At Tunersports.com we carry a huge selection of the top name brand performance valve cover gasket parts and accessories.
 SHIPS FROM MANUFACTURER C15268-125Race inspired designs and materials ensure that these valve cover gaskets will perform well above the OE standard. Cometic valve cover gaskets surpass the quality and ability of typical cork or paper gaskets offered by other manufactures. Withstands blowing out, over tightening, and high vacuum all ... Cometic Mark-IV BB V8 .125in Fiber Valve Cover Gskt Set-Fits Brodix BP DN-9-9 Deg Valve Angle Heads 1976-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $109.63 |