Looking for aftermarket parts to modify or upgrade your GMC C2500 with gasket kits? At Tunersports.com we carry a huge selection of the top name brand performance gasket kit parts and accessories.

SHIPS FROM MANUFACTURER PRO1046TCometic Street Pro Kits are geared toward the street rider who is looking to purchase a kit with all necessary gaskets and seals needed for your rebuild.... Cometic Street Pro GM Gen-6 L21/29 454 Big Block 4.375in Bore .040in Top End Gasket Kit 1996-2000 GMC C2500 Sierra SL / Sierra SLE / Sierra SLT $259.27 |
SHIPS FROM MANUFACTURER PRO1047TCometic Street Pro Kits are geared toward the street rider who is looking to purchase a kit with all necessary gaskets and seals needed for your rebuild.... Cometic Street Pro GM Gen-5 L19 454 Big Block 4.375in Bore .040in Top End Gasket Kit 1991-1993 GMC C2500 Sierra / Sierra SLX 1991-1995 GMC C2500 Sierra SLE 1994-1995 GMC C2500 Sierra SL / Sierra SLT $247.98 |

SHIPS FROM MANUFACTURER C5538-047Fully cured nitrile butadiene rubber binder for maximum fluid resistance... Cometic Chevrolet Gen-1 Small Block V8 .047in Fiber Thermostat Gasket 1980-1982 GMC C2500 Sierra Grande 1980-1986 GMC C2500 Base / High Sierra / Sierra Classic 1994-1995 GMC C2500 Sierra SLT $32.93 |
SHIPS FROM MANUFACTURER C5574-018A chemically blown, compounded, nitrile synthetic rubber bonded to an aluminum core... Cometic GM/Ford/Chrysler/Dodge .018in AFM Thermostat Housing Gasket 1980-1986 GMC C2500 High Sierra 1988-1995 GMC C2500 Sierra SLE 1994-1995 GMC C2500 Sierra SLT $32.93 |

SHIPS FROM MANUFACTURER C15282Cometic Chevy Gen1/2 Small Block V8-4.3L Gen1 90 Deg V6-Gen-3 Inline 6-153 4 Cyl Timing Cover Seal 1980-1982 GMC C2500 Sierra Grande 1980-1986 GMC C2500 Base / High Sierra / Sierra Classic 1988-1993 GMC C2500 Sierra / Sierra SLX 1988-1995 GMC C2500 Sierra SLE 1994-1995 GMC C2500 Sierra SL / Sierra SLT $42.90 |
SHIPS FROM MANUFACTURER C15615Fully cured nitrile butadiene rubber binder for maximum fluid resistance... Cometic Chevrolet Gen-1 Small Block V8 .031in Fiber Timing Cover Gasket 1980-1982 GMC C2500 Sierra Grande 1980-1986 GMC C2500 Base / High Sierra / Sierra Classic $37.16 |
SHIPS FROM MANUFACTURER C5051Cometic Chevy 4.3L Gen1 90 Deg V6-1975-1995 Gen1 SB V8 Timing Cover Gasket Kit-w/ Thick Front Seal 1985-1986 GMC C2500 Base / High Sierra / Sierra Classic 1988-1993 GMC C2500 Sierra / Sierra SLX 1988-1995 GMC C2500 Sierra SLE 1994-1995 GMC C2500 Sierra SL / Sierra SLT $47.31 |
SHIPS FROM MANUFACTURER C5058Cometic GM Gen-VI Big Block V8 Timing Cover Gasket Kit 1996-2000 GMC C2500 Sierra SLT $47.31 |
SHIPS FROM MANUFACTURER C5087Cometic GM Gen 5/6 Big Block V8 Rear Main Seal Kit - 1 Piece 1991-1993 GMC C2500 Sierra / Sierra SLX 1991-1995 GMC C2500 Sierra SLE 1994-1995 GMC C2500 Sierra SL / Sierra SLT $60.14 |
SHIPS FROM MANUFACTURER C5261-031Fully cured nitrile butadiene rubber binder for maximum fluid resistance... Cometic Chevrolet Gen-1 Small Block V8 .031in Fiber Timing Cover Gasket 1980-1982 GMC C2500 Sierra Grande 1980-1986 GMC C2500 Base / High Sierra / Sierra Classic $45.25 |
SHIPS FROM MANUFACTURER C5376Cometic Chevy Gen 1 Small Block V8 Timing Cover Seal Jesel Belt Drive Dual Lip, Wet & Dry Sump 86587 1980-1982 GMC C2500 Sierra Grande 1980-1986 GMC C2500 Base / High Sierra / Sierra Classic $77.28 |
SHIPS FROM MANUFACTURER C5379Cometic Chevy Gen 1 Small Block V8 Rear Main Seal Dual Lip Wet & Dry Sump 86625 1980-1982 GMC C2500 Sierra Grande 1980-1986 GMC C2500 Base / High Sierra / Sierra Classic $107.17 |
SHIPS FROM MANUFACTURER C5530Cometic Chevrolet Gen-1 Small Block V8 Timing Cover Gasket Kit - Front Cover - 0.31in 1980-1982 GMC C2500 Sierra Grande 1980-1986 GMC C2500 Base / High Sierra / Sierra Classic $50.73 |
SHIPS FROM MANUFACTURER CP15282Cometic Chevy Gen-1 Small Block V8 Timing Cover Seal - 10 Pack 1980-1982 GMC C2500 Sierra Grande 1980-1986 GMC C2500 Base / High Sierra / Sierra Classic $71.59 |
SHIPS FROM MANUFACTURER CP15615Fully cured nitrile butadiene rubber binder for maximum fluid resistance... Cometic Chevy Gen-1 Small Block V8 Timing Cover Gasket .031in Fiber - 10 Pack 1980-1982 GMC C2500 Sierra Grande 1980-1986 GMC C2500 Base / High Sierra / Sierra Classic $72.05 |

SHIPS FROM MANUFACTURER PRO1003T-400-040MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevy 350 Gen1 Small Block V8 Top End Gasket Kit-4.000in Bore-.040in MLS Cyl Head Gasket 1979-1979 GMC C2500 Base / High Sierra / Sierra Classic / Sierra Grande $290.62 |
SHIPS FROM MANUFACTURER PRO1003T-4020MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevy 350 Gen1 Small Block V8 Top End Gasket Kit-4.020in Bore-.040in MLS Cyl Head Gasket 1979-1979 GMC C2500 Base / High Sierra / Sierra Classic / Sierra Grande $290.62 |
SHIPS FROM MANUFACTURER PRO1003T-4060-027MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevy 350 Gen1 Small Block V8 Top End Gasket Kit-4.060in Bore-.027in MLS Cyl Head Gasket 1979-1979 GMC C2500 Base / High Sierra / Sierra Classic / Sierra Grande $290.62 |
SHIPS FROM MANUFACTURER PRO1003T-4060-040MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevy 350 Gen1 Small Block V8 Top End Gasket Kit-4.060in Bore-.040in MLS Cyl Head Gasket 1979-1979 GMC C2500 Base / High Sierra / Sierra Classic / Sierra Grande $290.62 |
SHIPS FROM MANUFACTURER PRO1003T-4100-027MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevy 350 Gen1 Small Block V8 Top End Gasket Kit-4.100in Bore-.027in MLS Cyl Head Gasket 1979-1979 GMC C2500 Base / High Sierra / Sierra Classic / Sierra Grande $290.62 |
SHIPS FROM MANUFACTURER PRO1003T-4100-040MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevy 350 Gen1 Small Block V8 Top End Gasket Kit-4.100in Bore-.040in MLS Cyl Head Gasket 1979-1979 GMC C2500 Base / High Sierra / Sierra Classic / Sierra Grande $262.38 |
SHIPS FROM MANUFACTURER PRO1004T-4060-062MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevy 305/350 Gen1 SB V8 Top End Gskt Kit-4.060in Bore-.062in MLS Cyl Head Gskt-w/ TPI/TBI 1988-1993 GMC C2500 Sierra / Sierra SLE / Sierra SLX $407.51 |
SHIPS FROM MANUFACTURER PRO1005T-4200-040MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel... Cometic Chevy 396/402 Mark-IV Big Block V8 Top End Gskt Kit-4.200in Bore-.040in MLS Cyl Head Gskt 1979-1982 GMC C2500 Sierra Grande 1979-1985 GMC C2500 Base / High Sierra / Sierra Classic $216.43 |

SHIPS FROM MANUFACTURER C5680Cometic Chevrolet Gen-1 90 Degree V6 Gen-1 Small Block V8 Rear Main Seal - 2 Piece - Viton 1980-1982 GMC C2500 Sierra Grande 1980-1986 GMC C2500 Base / High Sierra / Sierra Classic $55.46 |

SHIPS FROM MANUFACTURER C15011-032A chemically blown, compounded, nitrile synthetic rubber bonded to an aluminum core... Cometic Chevrolet Gen-1 Small Block V8 .032in AFM Water Pump Backing Plate Gasket 1980-1982 GMC C2500 Sierra Grande 1980-1986 GMC C2500 Base / High Sierra / Sierra Classic $37.39 |