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Applications  /  Automotive  /  Chevrolet  /  Gen-6 Big Block V8  /  L21 - 454CI/7.4L V8

Filter Products

Categories

  • Head Gasket

Gasket Kits

  • Top End Gasket Kit

Head Gasket Material

  • MLS

Material

  • MLS

Compressed Thickness

  • .040
  • .051

Head Gasket Thickness

  • .040

Bore Shape

  • Valve Pocketed

Head Gasket Bore

  • 4.375"

Bore Size (IN)

  • 4.510
  • 4.600

# of layers

  • 3

Orientation

  • None

Chevrolet Gen-6 Big Block V8 L21 - 454CI/7.4L V8 Gaskets

Showing gaskets 1 to 4 of 4

Head Gasket

Mercury Marine Chevrolet Mark-IV, GM Gen-V/VI Big Block V8 .040" MLS Cylinder Head Gasket, 4.510" Bore

Material: MLS Compressed Thickness: .040 Bore Shape: Valve Pocketed Bore Size (IN): 4.510 # of layers: 3 Orientation: None Stock Code: C5035-040 UPC: 191070121211
More Details

$109.94

Head Gasket

GM/Mercury Marine Big Block V8 Gen-IV/V/VI .040" MLS Cylinder Head Gasket, W/4 Bolts in Lifter Valley, 4.580" Bore

Material: MLS Compressed Thickness: .040 Bore Shape: Valve Pocketed Bore Size (IN): 4.600 # of layers: 3 Orientation: None Stock Code: CG10035-040 UPC: 191070559748
More Details

$107.30

Head Gasket

GM/Mercury Marine Big Block V8 Gen-IV/V/VI .051" MLS Cylinder Head Gasket, W/4 Bolts in Lifter Valley, 4.580" Bore

Material: MLS Compressed Thickness: .051 Bore Shape: Valve Pocketed Bore Size (IN): 4.600 # of layers: 3 Orientation: None Stock Code: CG10035-051 UPC: 191070559755
More Details

$107.30

Top End Gasket Kit

GM Gen-5/6 454 Big Block V8 Top End Gasket Kit, 4.375" Bore .040" MLS Cylinder Head Gasket, With Gen-4 Rectangular Port Heads

Head Gasket Material: MLS Head Gasket Thickness: .040 Head Gasket Bore: 4.375" Stock Code: PRO1045T UPC: 191070558710
More Details

$242.41

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