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Cometic Gasket

Cometic Porsche 928 83-97 100mm Bore .040 inch MLS Head Gasket Left Side H/G

$107.24 $96.52 Save $10.72

SKU: C006 C5781-040

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INSTALL DIFFICULTY
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Easy — 1–2 hours

Overview

It features outer layers coated with Viton rubber, offering heat resistance up to 482°F (250°C). This gasket is suitable for aluminum heads to aluminum blocks and aluminum heads to cast iron blocks, providing increased strength and resistance to corrosion. The compressed operating thickness is 0.040 inches.

This gasket is specifically for the left side of the engine. Cometic head gaskets prevent the mixture of gasses and oils with your car's cooling system, crucial for preventing damage. They are recommended for vehicles where horsepower is increased.
Show original supplier description

Part #: C5781-040

Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0.040". Left Side. 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.

Porsche M28.41/M28.42/M28.43/M28.44/M28.45/M28.46/M28.47/M28.49/M28.50 928 .040in. MLS Cylinder Head Gasket | 100mm Bore | LHS

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandCometic Gasket
Part NumberC006 C5781-040

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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