Cometic Custom Head Gaskets


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Chevy Head Gaskets on Sale


Shop For FORD

Shop For  MOPAR Gaskets

Pricing is for .027, .030, .036, .040, .045 and .051 thick,

other thickness' to .140 available with surcharge, Please call for pricing

Chevy V-8 Small Block
$155.00 Pair




Most Big Block  Chevy


Buy Now $165.00 a pair 
Pricing is for .027, .030, .036, .040, .045 and .051 thick, other thickness' to .140 available with surcharge

Over 200 Set's IN STOCK!

MLS Header Gaskets Now Available for Most Head Applications

We will need the following info to build your custom head gaskets


Finished Engine Bore

Head Type

Compressed Thickness


If you need help in calculating the compression ratio we'll also need:

    Deck height on the pistons


    Valve relief's in CC's

    Effective dome or dish

    Desired C/R

    Combustion Chamber size

MLS (Multi Layer Steel) HEAD GASKETS  

MLS gaskets are a multi layer steel gasket consisting of 3-5 layers of embossed steel for superior sealing ability with all aluminum, steel to aluminum or steel to steel applications.

MLS gaskets are bore specific, why use a 4.200 Gasket bore for your 4.00 bore size?

MLS gaskets are available in thickness' of .027, .030, .036, .040, .043, .045, .054, .067, .078, .080, .098, .120, .140

Most Race type heads are also available

Copper head gaskets also available in specific bore size and in .005, .010, .016,  .020, .027, .032, .043, .050, .080, .094 thickness.

Copper-MLS and Armour clad exhaust collector gaskets also available

Viton Valve stems seal now available

Call To Order or tech help 541-942-5920
8am to 3pm PST everyday

Installation Instructions

Cometic MLS gaskets install just as an old obsolete composite material gasket.
Be sure the head and deck surfaces are machined to an adequate finish as detailed above.
We recommend using a couple of light coats of Permatex Coppercoat to ensure a good water seal.
If any water seepage should occur allow the engine to heat cycle a few times, most likely it will seal itself once the gaskets form to the head and deck.  If it continues to seep add a can of Justice Brothers Radiator Pepper Based Sealer Part # RSL/2 about $7.00 to the cooling system.
Tork to bolt manufacturers specifications, re-tork should not be required with aftermarket ARP bolts or studs if pre stretch instruction from the manufacturer are follwed..

ARP, Justice Bros., Permatex, Coppercoat are registered trade marks and used for reference purposes only and recommended by FBO based on personal experience working with this product.

More Tech Information on Cometic MLS Gaskets

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This page last updated 10.24.11

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