Cometic Gasket

Cometic Pontiac 400/428/455 V8 .030in MLS Cylinder Head Gasket - 4.300in Bore

SKU C5712-030

MPN cgsC5712-030

$98.94 · Available to order

Cometic Pontiac 400/428/455 V8 .030in MLS Cylinder Head Gasket - 4.300in Bore

Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0.027". Cometic MLS (Multi-Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two materials. MLS gaskets have increased strength because they are comprised of multiple layers of stainless steel; which also creates the ability to rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton (a flour elastomer rubber based material that is heat resistant to 250 C/ 482 F). Viton is designed to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements.

Confirmed vehicle fitment
YearsMakeModelSubmodelDrive
1970PontiacTempestGT
1969–1970PontiacLeMansSafari
1975PontiacGrand LeMansSafari
1977PontiacGrand PrixLJ
1968–1970PontiacBonnevilleSafari
1968–1969PontiacTempestSafari
1969–1979PontiacFirebirdTrans Am
1978PontiacBonnevilleSafari
1968–1970PontiacCatalinaVentura
1968–1977PontiacFirebirdBase
1971PontiacLeMansT37
1968–1977PontiacLeMansBase
1973–1975PontiacGrand AmBase
1971–1974PontiacGrandvilleBase
1975BuickLeSabreCustom
1968–1969PontiacFirebird400
1975–1977PontiacGrand PrixSJ
1975OldsmobileDelta 88Base
1975Oldsmobile98Regency
1968–1974PontiacGrand PrixBase
1968–1978PontiacBonnevilleBase
1975OldsmobileCustom CruiserBase
1968–1969PontiacTempestCustom
1972–1974PontiacLeMansLuxury
1968–1978PontiacCatalinaSafari
1976–1978PontiacBonnevilleBrougham
1975–1977PontiacGrand LeMansBase
1968–1970PontiacExecutiveSafari
1973–1975PontiacLeMansSafari
1971–1978PontiacGrand SafariBase
1967–1973PontiacGTOBase
1968–1970PontiacExecutiveBase
1970–1977PontiacLeMansSport
1968–1970PontiacTempestBase
1976PontiacFirebirdEsprit
1970–1979PontiacFirebirdFormula
1968–1978PontiacCatalinaBase
1975OldsmobileDelta 88Royale
1970–1971PontiacGTOThe Judge
1975PontiacGrandvilleBrougham
1975OldsmobileCustom CruiserPanel
1975Oldsmobile98Luxury
1977PontiacLeMansSafari
1971–1972PontiacCatalinaBrougham
1970–1974PontiacFirebirdEsprit
1975PontiacGrand PrixLJ
1977PontiacGrand LeMansSafari
1974PontiacLeMansSafari Luxury
1976–1977PontiacGrand PrixBase
1975BuickLeSabreBase
Specifications
CategoryEngine Components
Sub-CategoryHead Gaskets
UPC191070137472
CARB ApprovedYes
Prop 65 WarningY
Special OrderYes
Weight0.75 lb
Dimensions (L×W×H)24 × 9.75 × 0.13 in