Cometic Nissan 75-80 L28 89mm .040in. MLS Head Gasket – Left

The Cometic Nissan 75-80 L28 89mm .040in. MLS Head Gasket – Left is intended for the verified vehicle applications listed below. Match manufacturer part number C4580-045, exact engine family, bore, thickness, material, sealing surfaces, fasteners, and every product note before ordering.

Key Features

• .040in Compressed Thickness: Ideal for stock or mildly modified engines requiring proper compression height.
• Multi-Layer Steel (MLS): Three embossed stainless layers with Viton coating for unmatched sealing and rebound.
• 89mm Bore: Precision-cut round bore matches L28 engine specifications.
• No Sealants Required: Advanced design withstands shearing forces between aluminum heads and iron blocks.
• Leading manufacturer of multi-layer steel head gaskets for high-performance and racing applications.
• Viton-coated stainless layers provide superior sealing, rebound, and heat resistance.

Fitment

Specifications

What’s Included

One new Cometic gasket product in the exact configuration and quantity identified by manufacturer part number C4580-045. 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 2018 Ford 5.0 Coyote 94.5mm Bore .040in MLS Head Gasket – Left
• Cometic 91-98 Nissan Silvia / 240SX KA24DE 89mm .040 inch MLS Head Gasket
• Cometic Datsun 240/260/280Z NonTurbo 89mm .040 inch MLS 5 Layer L28 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 1975-1978 Nissan 280Z 2+2?
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.