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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.

331 - 360 of 473 results

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Picture of Cometic C5551-042 Chevrolet Gen-1 Small Block V8 MLX Cylinder Head Gasket 4.220" Bore

Cometic C5551-042 Chevrolet Gen-1 Small Block V8 MLX Cylinder Head Gasket 4.220" Bore

29 reviews
Part: C5551042
Vehicle Specific
$125.67
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 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 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 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 C15561-040 Chevrolet Big Block V8 Head Gasket 4.560" Bore .040" MLX

Cometic C15561-040 Chevrolet Big Block V8 Head Gasket 4.560" Bore .040" MLX

45 reviews
Part: C15561-040
Vehicle Specific
$138.84
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5434-140 MLS Cylinder Head Gasket Chevy Big Block Bore - for V8 4.630

Cometic C5434-140 MLS Cylinder Head Gasket Chevy Big Block Bore - for V8 4.630

64 reviews
Part: C5434-140
Vehicle Specific
$231.78
Ships from manufacturer
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Picture of Cometic C5331-081 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - 4.630

Cometic C5331-081 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - 4.630

28 reviews
Part: C5331-081
Vehicle Specific
$157.91
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5329-053 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - for 4.375

Cometic C5329-053 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - for 4.375

12 reviews
Part: C5329-053
Vehicle Specific
$114.59
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5330-042 MLS Cylinder Head Gasket for Chevrolet Big Block Mark IV Bore - V8 4.540

Cometic C5330-042 MLS Cylinder Head Gasket for Chevrolet Big Block Mark IV Bore - V8 4.540

40 reviews
Part: C5330-042
Vehicle Specific
$114.59
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5329-089 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - for 4.375

Cometic C5329-089 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - for 4.375

37 reviews
Part: C5329-089
Vehicle Specific
$157.91
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5273-098 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.200

Cometic C5273-098 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.200

52 reviews
Part: C5273-098
Vehicle Specific
$140.10
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5273-070 MLS Cylinder Head Gasket Bore Chevy Small Block - 4.200 V8

Cometic C5273-070 MLS Cylinder Head Gasket Bore Chevy Small Block - 4.200 V8

35 reviews
Part: C5273-070
Vehicle Specific
$129.83
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5270-051 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.100

Cometic C5270-051 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.100

12 reviews
Part: C5270-051
Vehicle Specific
$104.33
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5245-095 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.060

Cometic C5245-095 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.060

9 reviews
Part: C5245-095
Vehicle Specific
$140.10
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5331-095 MLS Cylinder Head Gasket for Chevrolet Big Block Mark IV Bore - V8 4.630

Cometic C5331-095 MLS Cylinder Head Gasket for Chevrolet Big Block Mark IV Bore - V8 4.630

48 reviews
Part: C5331-095
Vehicle Specific
$158.24
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5248-084 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.165

Cometic C5248-084 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.165

61 reviews
Part: C5248-084
Vehicle Specific
$140.10
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5247-089 MLS Cylinder Head Gasket Chevy Small Block Bore - 4.125

Cometic C5247-089 MLS Cylinder Head Gasket Chevy Small Block Bore - 4.125

32 reviews
Part: C5247-089
Vehicle Specific
$140.10
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5329-023 MLS Cylinder Head Gasket Chevy Big Block Bore - 4.375

Cometic C5329-023 MLS Cylinder Head Gasket Chevy Big Block Bore - 4.375

47 reviews
Part: C5329-023
Vehicle Specific
$108.07
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5786-051 Chevy Small Block Head Gasket MLX Bore - V8 051 4.220

Cometic C5786-051 Chevy Small Block Head Gasket MLX Bore - V8 051 4.220

8 reviews
Part: C5786-051
Vehicle Specific
$125.67
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5329-084 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - for 4.375

Cometic C5329-084 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - for 4.375

30 reviews
Part: C5329-084
Vehicle Specific
$157.91
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5272-060 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.165

Cometic C5272-060 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.165

11 reviews
Part: C5272-060
Vehicle Specific
$129.83
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5245-023 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.060

Cometic C5245-023 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.060

36 reviews
Part: C5245-023
Vehicle Specific
$97.39
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5411-086 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.060

Cometic C5411-086 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.060

7 reviews
Part: C5411-086
Vehicle Specific
$140.10
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5404-027 MLS Head Gasket Chevy Small Block Bore Thick - 4.030 027

Cometic C5404-027 MLS Head Gasket Chevy Small Block Bore Thick - 4.030 027

62 reviews
Part: C5404-027
Vehicle Specific
$95.19
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
Free Shipping
Picture of Cometic C5270-030 MLS Cylinder Head Gasket Bore Chevy Small Block - 4.100 V8

Cometic C5270-030 MLS Cylinder Head Gasket Bore Chevy Small Block - 4.100 V8

74 reviews
Part: C5270-030
Vehicle Specific
$97.39
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5404-030 MLS Cylinder Head Gasket for Chevrolet Small Block - Gen-1 V8

Cometic C5404-030 MLS Cylinder Head Gasket for Chevrolet Small Block - Gen-1 V8

48 reviews
Part: C5404-030
Vehicle Specific
$95.19
Ships from manufacturer
Picture for manufacturer Cometic
Picture of Cometic C5536-060 Intake Manifold End Seals Kit for Chevrolet Gen-1 Small Block V8

Cometic C5536-060 Intake Manifold End Seals Kit for Chevrolet Gen-1 Small Block V8

16 reviews
Part: C5536-060
Vehicle Specific
$7.10
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.