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GMC K15 Engine Gaskets and Seals

This page brings together engine gaskets and seals for the GMC K15 covering model years 1975 through 1978, including cylinder head gaskets and intake manifold gasket sets. Pick your GMC K15's year above to narrow the list to engine gaskets and seals with confirmed fitment. Every part shown is checked against our vehicle data.

361 - 390 of 473 results

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Picture of Cometic C15411-043 Small Block Chevy Head Gasket Copper Bore - Gen-1 V8 043 4.165

Cometic C15411-043 Small Block Chevy Head Gasket Copper Bore - Gen-1 V8 043 4.165

19 reviews
Part: C15411-043
Vehicle Specific
$122.08
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C15415-043 Copper Head Gasket for Chevy Big Block Mark IV 4.630" Bore

Cometic C15415-043 Copper Head Gasket for Chevy Big Block Mark IV 4.630" Bore

73 reviews
Part: C15415-043
Vehicle Specific
$135.78
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C15414-043 Chevrolet Mark IV Big Block V8 Cylinder Head Gasket 4.530" Bore

Cometic C15414-043 Chevrolet Mark IV Big Block V8 Cylinder Head Gasket 4.530" Bore

47 reviews
Part: C15414-043
Vehicle Specific
$135.78
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C15413-043 Copper Cylinder Head Gasket for Chevy Big Block Mark IV 4.320" Bore

Cometic C15413-043 Copper Cylinder Head Gasket for Chevy Big Block Mark IV 4.320" Bore

25 reviews
Part: C15413-043
Vehicle Specific
$135.78
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C15412-043 Small Block Chevy Head Gasket Copper Bore - Gen-1 V8 043 4.200

Cometic C15412-043 Small Block Chevy Head Gasket Copper Bore - Gen-1 V8 043 4.200

38 reviews
Part: C15412-043
Vehicle Specific
$122.08
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5215-045 MLS Head Gasket GM Small Block 4.270" Bore .045" Thick

Cometic C5215-045 MLS Head Gasket GM Small Block 4.270" Bore .045" Thick

29 reviews
Part: C5215045
Vehicle Specific
$103.71
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5270-023 MLS Cylinder Head Gasket for Chevrolet Small Block - Gen-1 V8

Cometic C5270-023 MLS Cylinder Head Gasket for Chevrolet Small Block - Gen-1 V8

61 reviews
Part: C5270-023
Vehicle Specific
$98.30
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5245-032 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.060

Cometic C5245-032 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.060

22 reviews
Part: C5245-032
Vehicle Specific
$97.39
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5246-140 MLS Cylinder Head Gasket Bore Chevy Small Block - 4.100 V8

Cometic C5246-140 MLS Cylinder Head Gasket Bore Chevy Small Block - 4.100 V8

20 reviews
Part: C5246-140
Vehicle Specific
$232.11
Ships from manufacturer
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Picture of Cometic C5433-140 MLS Head Gasket for Chevy Big Block 4.570 Bore .140 Thick

Cometic C5433-140 MLS Head Gasket for Chevy Big Block 4.570 Bore .140 Thick

49 reviews
Part: C5433-140
Vehicle Specific
$230.62
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic PRO1040T-045 GM Gen III Vortec V8 Top End Gasket Kit

Cometic PRO1040T-045 GM Gen III Vortec V8 Top End Gasket Kit

69 reviews
Part: PRO1040T-045
Vehicle Specific
$368.40
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C15575-040 Chevrolet Gen-1 Small Block V8 Cylinder Head Gasket 4.165 Bore

Cometic C15575-040 Chevrolet Gen-1 Small Block V8 Cylinder Head Gasket 4.165 Bore

13 reviews
Part: C15575-040
Vehicle Specific
$120.64
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5786-062 Chevy Small Block MLS Head Gasket Bore Thick - V8 4.220 062

Cometic C5786-062 Chevy Small Block MLS Head Gasket Bore Thick - V8 4.220 062

56 reviews
Part: C5786-062
Vehicle Specific
$125.67
Ships from manufacturer
Picture for manufacturer Cometic
Picture of Cometic C5414-094 Intake Manifold Gasket Set for Chevrolet Gen-1 Small Block V8

Cometic C5414-094 Intake Manifold Gasket Set for Chevrolet Gen-1 Small Block V8

47 reviews
Part: C5414-094
Vehicle Specific
$23.80
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic PRO1005T-4300-051 Top End Gasket Kit for Chevrolet Mark IV Big Block - V8

Cometic PRO1005T-4300-051 Top End Gasket Kit for Chevrolet Mark IV Big Block - V8

79 reviews
Part: PRO1005T-4300-051
Vehicle Specific
$350.02
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic PRO1003T-4060-062 Top End Gasket Kit for Chevrolet Small Block - 350 Gen-1 V8

Cometic PRO1003T-4060-062 Top End Gasket Kit for Chevrolet Small Block - 350 Gen-1 V8

69 reviews
Part: PRO1003T-4060-062
Vehicle Specific
$260.53
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic PRO1003T-4040 Chevy 350 Small Block Top End Gasket Kit

Cometic PRO1003T-4040 Chevy 350 Small Block Top End Gasket Kit

49 reviews
Part: PRO1003T-4020
Vehicle Specific
$281.50
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic PRO1005T-4375-027 Chevrolet Mark IV Big Block Top End Gasket Kit - V8

Cometic PRO1005T-4375-027 Chevrolet Mark IV Big Block Top End Gasket Kit - V8

54 reviews
Part: PRO1005T-4375-027
Vehicle Specific
$350.02
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C15512-040 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.165

Cometic C15512-040 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.165

68 reviews
Part: C15512-040
Vehicle Specific
$98.30
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C15495-040 Chevrolet Gen-I Small Block V8 MLS Cylinder Head Gasket 4.155" Bore

Cometic C15495-040 Chevrolet Gen-I Small Block V8 MLS Cylinder Head Gasket 4.155" Bore

36 reviews
Part: C15495-040
Vehicle Specific
$98.30
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic PRO1005T-4375-051 Top End Gasket Kit for Chevy Big Block Mark IV - V8

Cometic PRO1005T-4375-051 Top End Gasket Kit for Chevy Big Block Mark IV - V8

59 reviews
Part: PRO1005T-4375-051
Vehicle Specific
$223.90
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic PRO1003T-4200-040 Top End Gasket Kit for Chevy 350/400 Small Block V8

Cometic PRO1003T-4200-040 Top End Gasket Kit for Chevy 350/400 Small Block V8

60 reviews
Part: PRO1003T-4200-040
Vehicle Specific
$279.96
Ships from manufacturer
Picture for manufacturer Cometic
Picture of Cometic C5345F Timing Cover Gasket for Chevrolet Big Block Mark IV Gen V V8

Cometic C5345F Timing Cover Gasket for Chevrolet Big Block Mark IV Gen V V8

72 reviews
Part: C5345F
Vehicle Specific
$32.24
Ships from manufacturer
Picture for manufacturer Cometic
Picture of Cometic C5650AFM Chevrolet Big Block V8 Timing Cover Gasket Kit

Cometic C5650AFM Chevrolet Big Block V8 Timing Cover Gasket Kit

20 reviews
Part: C5650AFM
Vehicle Specific
$24.26
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5433-098 MLS Cylinder Head Gasket Chevy Big Block Bore - for V8 4.570

Cometic C5433-098 MLS Cylinder Head Gasket Chevy Big Block Bore - for V8 4.570

33 reviews
Part: C5433-098
Vehicle Specific
$149.01
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C15529-040 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - 4.500

Cometic C15529-040 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - 4.500

70 reviews
Part: C15529-040
Vehicle Specific
$110.19
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic PRO1003T-066 Chevrolet 350/400 Gen-1 Small Block V8 Top End Gasket Kit

Cometic PRO1003T-066 Chevrolet 350/400 Gen-1 Small Block V8 Top End Gasket Kit

56 reviews
Part: PRO1003T-066
Vehicle Specific
$254.84
Ships from manufacturer
Picture for manufacturer Cometic
Picture of Cometic C15607 Chevrolet Mark IV Big Block Oil Pan Gasket Kit - V8

Cometic C15607 Chevrolet Mark IV Big Block Oil Pan Gasket Kit - V8

52 reviews
Part: C15607
Vehicle Specific
$28.12
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5413-036 MLS Cylinder Head Gasket Chevy Small Block Bore - for 4.145

Cometic C5413-036 MLS Cylinder Head Gasket Chevy Small Block Bore - for 4.145

44 reviews
Part: C5413-036
Vehicle Specific
$98.30
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic PRO1003T-NHG Top End Gasket Kit for Chevrolet Small Block - 350/400 Gen-1 V8

Cometic PRO1003T-NHG Top End Gasket Kit for Chevrolet Small Block - 350/400 Gen-1 V8

49 reviews
Part: PRO1003T-NHG
Vehicle Specific
$154.23
Ships from manufacturer
Picture for manufacturer Cometic

What's here for your GMC K15

  • Engine cylinder head gaskets
  • Engine intake manifold gasket sets
  • Front and rear seals
  • Performance and OE replacement gasket kits
  • Rubber seals and multi-piece gasket sets

The widest selection of GMC K15 engine gaskets and seals here comes from Cometic, Victor, MAHLE, and Speedmaster, covering a broad range of cylinder head and manifold applications for 1975–1978 model years. Other categories GMC K15 owners shop for: GMC K15 Steering Wheels, GMC K15 Exhaust and Tail Pipes and GMC K15 Doors and Door Parts, or browse all GMC K15 parts and accessories.