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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.

91 - 120 of 473 results

Best Seller Free Shipping
Picture of Cometic C5245-140 MLS Cylinder Head Gasket Chevy Small Block Bore - 4.060

Cometic C5245-140 MLS Cylinder Head Gasket Chevy Small Block Bore - 4.060

18 reviews
Part: C5245-140
Vehicle Specific
$228.77
Ships from manufacturer
Picture for manufacturer Cometic
Best Seller Free Shipping
Picture of Cometic C5245-120 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.060

Cometic C5245-120 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.060

58 reviews
Part: C5245-120
Vehicle Specific
$228.77
Ships from manufacturer
Picture for manufacturer Cometic
Best Seller Free Shipping
Picture of Cometic C5330-120 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - for V8 4.540

Cometic C5330-120 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - for V8 4.540

72 reviews
Part: C5330-120
Vehicle Specific
$232.11
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5403-120 MLS Head Gasket Chevy Small Block Bore Thick - 4.200 120

Cometic C5403-120 MLS Head Gasket Chevy Small Block Bore Thick - 4.200 120

70 reviews
Part: C5403-120
Vehicle Specific
$231.78
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5474-120 MLS Head Gasket Chevy SBC 4.080 Bore .120 Thick

Cometic C5474-120 MLS Head Gasket Chevy SBC 4.080 Bore .120 Thick

59 reviews
Part: C5474-120
Vehicle Specific
$231.78
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5329-120 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - for 4.375

Cometic C5329-120 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - for 4.375

18 reviews
Part: C5329-120
Vehicle Specific
$232.11
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5432-120 MLS Cylinder Head Gasket Chevy Big Block Bore - for V8 4.310

Cometic C5432-120 MLS Cylinder Head Gasket Chevy Big Block Bore - for V8 4.310

25 reviews
Part: C5432-120
Vehicle Specific
$232.11
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5816-120 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - 4.320

Cometic C5816-120 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - 4.320

37 reviews
Part: C5816-120
Vehicle Specific
$228.77
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Edelbrock Head Gasket Set

Edelbrock Head Gasket Set

68 reviews
Vehicle Specific
from $55
In Stock (10+)
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Picture of COMP Cams Metal Body Viton Valve Stem Oil Seal Guide Stem

COMP Cams Metal Body Viton Valve Stem Oil Seal Guide Stem

79 reviews
Vehicle Specific
from $8
In Stock (10+)
Picture for manufacturer COMP Cams
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Picture of COMP Cams Valve Stem Oil Seal Guide Stem Metal Viton

COMP Cams Valve Stem Oil Seal Guide Stem Metal Viton

17 reviews
Vehicle Specific
from $8
In Stock (10+)
Picture for manufacturer COMP Cams
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Picture of Cometic C5329-030 MLS Cylinder Head Gasket for Chevrolet Big Block Mark IV Bore - V8 4.375

Cometic C5329-030 MLS Cylinder Head Gasket for Chevrolet Big Block Mark IV Bore - V8 4.375

57 reviews
Part: C5329-030
Vehicle Specific
$107.16
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5249-070 MLS Cylinder Head Gasket Bore Chevy Small Block - 4.200 070 V8

Cometic C5249-070 MLS Cylinder Head Gasket Bore Chevy Small Block - 4.200 070 V8

32 reviews
Part: C5249-070
Vehicle Specific
$126.82
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5269-051 MLS Cylinder Head Gasket Bore Chevy Small Block - 4.060 051 V8

Cometic C5269-051 MLS Cylinder Head Gasket Bore Chevy Small Block - 4.060 051 V8

26 reviews
Part: C5269-051
Vehicle Specific
$101.30
Ships from manufacturer
Picture for manufacturer Cometic
Picture of Cometic C5057 Timing Cover Gasket Kit for Chevrolet Big Block V8

Cometic C5057 Timing Cover Gasket Kit for Chevrolet Big Block V8

35 reviews
Part: C5057
Vehicle Specific
$17.50
3 left at this price
Picture for manufacturer Cometic
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Picture of Cometic C5403-066 MLS Cylinder Head Gasket Bore Chevy Small Block - 4.200 066

Cometic C5403-066 MLS Cylinder Head Gasket Bore Chevy Small Block - 4.200 066

44 reviews
Part: C5403-066
Vehicle Specific
$122.56
2 left at this price
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5331-056 MLS Cylinder Head Gasket Chevy Big Block Bore - 454 502 4.630

Cometic C5331-056 MLS Cylinder Head Gasket Chevy Big Block Bore - 454 502 4.630

14 reviews
Part: C5331-056
Vehicle Specific
$151.96
4 left at this price
Picture for manufacturer Cometic
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Picture of Cometic C5816-092 MLS Cylinder Head Gasket - Chevy Big Block Mark IV 4.320" Bore .092" Thick

Cometic C5816-092 MLS Cylinder Head Gasket - Chevy Big Block Mark IV 4.320" Bore .092" Thick

56 reviews
Part: C5816-092
Vehicle Specific
$158.24
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5329-080 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - 4.375 080

Cometic C5329-080 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - 4.375 080

17 reviews
Part: C5329-080
Vehicle Specific
$154.90
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5329-070 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - 4.375 070

Cometic C5329-070 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - 4.375 070

10 reviews
Part: C5329-070
Vehicle Specific
$147.82
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5433-095 MLS Cylinder Head Gasket Chevy Big Block Bore - for V8 4.570

Cometic C5433-095 MLS Cylinder Head Gasket Chevy Big Block Bore - for V8 4.570

75 reviews
Part: C5433-095
Vehicle Specific
$149.01
Ships from manufacturer
Picture for manufacturer Cometic
Picture of Cometic C5053 Timing Cover Gasket Kit for Chevrolet 153 4-Cylinder & Gen-3 Inline 6

Cometic C5053 Timing Cover Gasket Kit for Chevrolet 153 4-Cylinder & Gen-3 Inline 6

71 reviews
Part: C5053
Vehicle Specific
$16.01
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5031-040 Chevrolet Gen-1 Small Block V8 Cylinder Head Gasket .040" MLX 4.165" Bore

Cometic C5031-040 Chevrolet Gen-1 Small Block V8 Cylinder Head Gasket .040" MLX 4.165" Bore

36 reviews
Part: C5031-040
Vehicle Specific
$119.73
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5551-050 Chevrolet Gen-1 Small Block V8 MLS Head Gasket 4.220" Bore .050" Thick

Cometic C5551-050 Chevrolet Gen-1 Small Block V8 MLS Head Gasket 4.220" Bore .050" Thick

44 reviews
Part: C5551-050
Vehicle Specific
$152.06
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5551-048 Chevy Small Block Head Gasket MLX Bore - V8 048 4.220

Cometic C5551-048 Chevy Small Block Head Gasket MLX Bore - V8 048 4.220

57 reviews
Part: C5551-048
Vehicle Specific
$152.06
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5410-086 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.165

Cometic C5410-086 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.165

59 reviews
Part: C5410-086
Vehicle Specific
$140.10
Ships from manufacturer
Picture for manufacturer Cometic
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Picture of Cometic C5273-080 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.200

Cometic C5273-080 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.200

60 reviews
Part: C5273-080
Vehicle Specific
$140.10
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5551-052 Chevrolet Small Block MLS Head Gasket Bore - Gen-1 V8 4.220 052

Cometic C5551-052 Chevrolet Small Block MLS Head Gasket Bore - Gen-1 V8 4.220 052

78 reviews
Part: C5551-052
Vehicle Specific
$151.14
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5433-066 MLS Cylinder Head Gasket Chevy Big Block Bore - for V8 4.570

Cometic C5433-066 MLS Cylinder Head Gasket Chevy Big Block Bore - for V8 4.570

19 reviews
Part: C5433-066
Vehicle Specific
$136.53
Ships from manufacturer
Picture for manufacturer Cometic
Free Shipping
Picture of Cometic C5247-098 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.125

Cometic C5247-098 MLS Cylinder Head Gasket Chevy Small Block Bore - for V8 4.125

60 reviews
Part: C5247-098
Vehicle Specific
$140.10
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.