1978 GMC C25 Head Gaskets

Looking for aftermarket parts to modify or upgrade your 1978 GMC C25 with head gaskets? At Tunersports.com we carry a huge selection of the top name brand performance head gasket parts and accessories.

Head Gasket Parts:

Cometic Gasket Head Gaskets

SHIPS FROM MANUFACTURER C15270-051 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevy Mark-IV BB V8 .051in MLS Cyl Head Gasket-4.620in Bore 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $115.56 Details

SHIPS FROM MANUFACTURER C15413-043 Copper Head Gasket... Cometic Chevy Big Block 4.320in Bore 0.043in Copper Round Bore Head Gasket 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $141.78 Details

SHIPS FROM MANUFACTURER C15414-043 Copper Head Gasket... Cometic Chevy Big Block 4.530in Bore 0.043in Copper Head Gasket 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $141.78 Details

SHIPS FROM MANUFACTURER C15415-043 Copper Head Gasket... Cometic Chevy Big Block 4.630in Bore 0.043in Copper Head Gasket 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $141.78 Details

SHIPS FROM MANUFACTURER C15513-040 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevy Mark-IV Big Block V8 .040in MLS Cylinder Head Gasket - 4.580in Bores 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $118.97 Details

SHIPS FROM MANUFACTURER C15516-060 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevy Mark-IV Big Block V8 .060in MLS Cylinder Head Gasket - 4.350in Bores 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $150.72 Details

SHIPS FROM MANUFACTURER C15529-040 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevy Mark-IV Big Block V8 .040in MLS Cylinder Head Gasket - 4.500in Bores 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $118.97 Details

SHIPS FROM MANUFACTURER C15561-040 MLX Gaskets utilize an integrated "stopper" layer for combustion chamber sealing... Cometic Chevrolet Mark-IV Big Block V8 115.82mm Bore .040in MLX Cylinder Head Gasket 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $144.80 Details

SHIPS FROM MANUFACTURER C5036-040 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet Mark-IV Big Block V8 .040in MLS Cylinder Head Gasket - 4.570in Bore 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $118.97 Details

SHIPS FROM MANUFACTURER C5080-040 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet Mark-IV Big Block V8 .040in MLS Cylinder Head Gasket - 4.500in Bore 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $118.97 Details

SHIPS FROM MANUFACTURER C5081-040 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet Mark-IV Big Block V8 .040in MLS Cylinder Head Gasket - 4.510in Bore 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $118.97 Details

SHIPS FROM MANUFACTURER C5081-051 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet Mark-IV Big Block V8 .051in MLS Cylinder Head Gasket - 4.510in Bore 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $123.32 Details

SHIPS FROM MANUFACTURER C5329-023 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet Mark-IV Big Block V8 .023in MLS Cylinder Head Gasket - 4.375in Bore 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $118.97 Details

SHIPS FROM MANUFACTURER C5329-027 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet Mark-IV Big Block V8 .027in MLS Cylinder Head Gasket - 4.375in Bore 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $118.97 Details

SHIPS FROM MANUFACTURER C5329-030 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet Big Block 396/402/427/454 4.375in Bore .030in Thick MLS-5 Head Gasket 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $118.97 Details

SHIPS FROM MANUFACTURER C5329-032 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet Mark-IV Big Block V8 .032in MLS Cylinder Head Gasket - 4.375in Bore 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $118.97 Details

SHIPS FROM MANUFACTURER C5329-036 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet BB 111.125mm Bore .036in 396/402/427/454 MLS Head Gasket 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $118.97 Details

SHIPS FROM MANUFACTURER C5329-040 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet BB 111.125mm Bore .040in MLS 396/402/427/454 Head Gasket 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $118.97 Details

SHIPS FROM MANUFACTURER C5329-045 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet Mark-IV Big Block V8 .045in MLS Cylinder Head Gasket - 4.375in Bore 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $123.32 Details

SHIPS FROM MANUFACTURER C5329-050 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet Mark-IV Big Block V8 .050in MLS Cylinder Head Gasket - 4.375in Bore 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $150.72 Details

SHIPS FROM MANUFACTURER C5329-051 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevy BB Head Gasket 4.375in Bore .051in MLS 396/402/427/454 Head Gasket 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $123.32 Details

SHIPS FROM MANUFACTURER C5329-053 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet Mark-IV Big Block V8 .053in MLS Cylinder Head Gasket - 4.375in Bore 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $123.32 Details

SHIPS FROM MANUFACTURER C5329-056 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet Mark-IV Big Block V8 .056in MLS Cylinder Head Gasket - 4.375in Bore 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $150.72 Details

SHIPS FROM MANUFACTURER C5329-060 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet Big Block 396/402/427/454 4.375in Bore .060in Thick MLS-5 Head Gasket 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $150.72 Details

SHIPS FROM MANUFACTURER C5329-062 MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevrolet Mark-IV Big Block V8 .062in MLS Cylinder Head Gasket - 4.375in Bore 1975-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $150.72 Details