Cometic 03+ Subaru EJ255/EJ257 101mm .056 inch MLS-5 Head Gasket

The Cometic 03+ Subaru EJ255/EJ257 101mm .056 inch MLS-5 Head Gasket is intended for the verified vehicle applications listed below. Match manufacturer part number C4574-056, exact engine family, bore, thickness, material, sealing surfaces, fasteners, and every product note before ordering.

Key Features

• Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating.
• Compressed operating thickness is 0.056″.
• 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.
• 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.
• Viton is designed to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes.

Fitment

Specifications

What’s Included

One new Cometic gasket product in the exact configuration and quantity identified by manufacturer part number C4574-056. Fasteners, sealants, fluids, companion gaskets, tools, and related engine components are included only when expressly stated for this exact part number.

About Cometic Gasket

Cometic develops sealing products for automotive and powersports engine applications. Correct selection remains exact-engine, exact-dimension, exact-material, exact-interface, and exact-part-number specific.

Related Cometic Gasket Products

• Cometic 03+ Subaru EJ255/04-10 EJ257 101mm .030 inch MLS Head Gasket
• Cometic 03+ Subaru EJ255/EJ257 101mm .036 inch MLS Head Gasket
• Cometic 03+ Subaru EJ255/EJ257 101mm .040 inch MLS Head Gasket

Browse the Cometic Gasket collection for related head, intake, exhaust, valve-cover, and engine gasket products.

Frequently Asked Questions

Will this Cometic gasket fit my 2006-2009 Subaru Legacy GT spec.B?
That application is listed, but confirm the exact engine, bore, gasket thickness, material, sealing-surface requirements, and manufacturer part number before ordering.

Can I choose gasket thickness by vehicle alone?
No. Confirm the exact engine build, bore, deck and head condition, installed clearances, compression target, and manufacturer instructions before selecting thickness.

Do the sealing surfaces need preparation?
Yes. Follow the current Cometic and engine-builder requirements for surface finish, flatness, cleanliness, fasteners, torque procedure, and any specified sealant.

Installation Instructions

Follow the current Cometic and engine-manufacturer instructions for this exact part number. Verify surface finish, flatness, cleanliness, orientation, fasteners, torque sequence, torque values, sealant requirements, clearances, and fluid procedures before assembly. Inspect and test the completed repair before full-load operation.