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After all gasket mating surfaces have been carefully cleaned, place a straight edge across the cylinder head and engine block gasket surfaces. Flatness should not vary more than .0025˝. If a variance of more than .0025˝ is measured, we recommend correcting this situation before installing the head gasket.

Re-tap and thoroughly clean all head bolt/stud threaded holes. If existing bolts or studs are being reused, clean threads and lightly lubricate to insure accurate torque readings.

NOTE: Torque specs will vary with the type of lubricant used.

  • Use fresh 10W-30 weight motor oil and follow bolt/stud manufacturer’s recommendation.
  • Use a thread sealer or silicone on bolt holes that enter into cooling passages.
  • Do not use any type of adhesive or sealer on Mr. Gasket/Ultra-Seal® head gaskets. The special coatings used on the gaskets are more than adequate to properly seal all fluid passages and minor surface imperfections.

Applying proper clamp load is one of the most important steps to a successful seal. After installing head gasket and cylinder head, tighten bolts/studs following engine manufacturer’s recommended torque sequence. Tighten in at least three equal steps moving the torque wrench in a smooth, even pull, which will yield the most accurate torque readings. The use of Mr. Gasket hardened washers will further reduce friction and increase torque accuracy.

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  • American Motors V8
  • Buick V8
  • Chevrolet Big Block Gen V/VI
  • Chevrolet Big Block Mark IV
  • Chevrolet Small Block Gen I
  • Chevrolet Small Block Gen II (LT Based)
  • Chrysler Big Block B/RB
  • Chrysler Hemi (Gen II)
  • Chrysler Hemi Gen III
  • Chrysler Small Block LA
  • Ford 4-Cylinder
  • Ford Big Block
  • Ford Cleveland
  • Ford Coyote
  • Ford FE Block
  • Ford Modified
  • Ford Modular V8
  • Ford Small Block Windsor
  • GM Small Block Gen III/IV (LS Based)
  • Honda 4-Cylinder
  • Oldsmobile V8
  • Pontiac V8
  • Mr. Gasket
  • Scott Drake
Compressed Thickness
  • .020 inch
  • .026
  • .028 inch
  • .038 inch
  • .040 inch
  • .051 inch
  • .055 inch
  • .76 mm
Gasket Bore
  • 3.630 inch
  • 3.755 inch
  • 3.830 inch
  • 3.870 inch
  • 3.945 inch
  • 4.030 inch
  • 4.035 inch
  • 4.050 inch
  • 4.060 inch
  • 4.080
  • 4.100 inch
  • 4.125 inch
  • 4.130 inch
  • 4.140 inch
  • 4.150 inch
  • 4.180 inch
  • 4.185 inch
  • 4.190 inch
  • 4.200 inch
  • 4.230 inch
  • 4.250 inch
  • 4.340 inch
  • 4.370 inch
  • 4.375 inch
  • 4.380 inch
  • 4.385 inch
  • 4.400 inch
  • 4.410 inch
  • 4.420 inch
  • 4.435
  • 4.460 inch
  • 4.500 inch
  • 4.520 inch
  • 4.630 inch
  • 85mm
Gasket Line
  • Copper
  • MLS
  • Performance
  • Ultra-Seal
  • Composition
  • Copper
  • Graphite Steel
  • Multi-Layered Steel
  • Steel Shim
Items 1 - 66 of 66 Items
    1. 1

    Cylinder Head Gaskets

    Performance Composite

    • Engineered to meet or exceed OE gasket and sealing specifications
    • Same gasket as in Mr. Gasket OE gaskets kit, but now available separately
    • For use in daily drivers, muscle cars and street rods that use stock style gaskets
    • Budget priced and sold individually

    Steel Shim

    • Manufactured from .020” steel shim stock.
    • Thinner than OE head gaskets, increases engine compression.
    • Stress formed embossments seal extreme cylinder pressures.
    • For high performance street, drag race and oval track use.


    • Five layer (graphite core/perforated steel outer layers) composite construction.
    • Graphite core has excellent thermal conductivity, transferring heat away from hot spots preventing gasket burn-out.
    • Provides excellent stability, compressibility and high temperature endurance.
    • Coated with high temperature silicone to ensure sealing of engine fluids.
    • Will not brinell (indent) aluminum cylinder heads.
    • For high performance street, drag race and oval track use.

    MLS (Multi-Layered Steel)

    • Manufactured from premium grade stainless steel and state of the art laser cutting
    • Optimized sealing embossments seals extreme cylinder pressure
    • Provides excellent stability and reduces cylinder bore distortion
    • Proprietary polymer coating ensures the micro seal of engine coolant and oil fluids
    • Ideal for supercharged, turbo-charged, nitrous oxide and extreme compression ratio engines
    • For high performance street, drag race and oval track use


    • Manufactured from dead soft solid copper
    • Provides excellent stability and reduces cylinder bore distortion
    • Can be used with or without stainless steel o-rings
    • Ideal for supercharged, turbo charged, nitrous oxide and extreme compression ratios
    • For high performance street, drag race and oval track

    Head Gaskets

    From Mild to Wild, Mr Gasket has the Head Gaskets you need. We stay up to date by adding new materials and new applications on a regular basis.