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Cometic C4580-045 MLS head gasket left side view 89mm bore
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Cometic Nissan 75-80 L28 89mm .040in. MLS Head Gasket - Left

CGSC4580-045
191070018894
Head Gaskets
Out of stock
$ 201.12 $ 181.01

SKU: C4580-045   |   UPC: 191070018894


Cometic Nissan L28 89mm .040in MLS Head Gasket - Left (Non-Turbo)

The Cometic C4580-045 MLS Head Gasket is the best high-performance cylinder head gasket for 1975-1980 Nissan 280Z / 280ZX with the L28 engine (non-turbo applications). This multi-layer steel gasket features three embossed stainless layers with Viton rubber coating for superior sealing under high compression, boosted setups, or engine rebuilds, providing maximum combustion sealing, rebound, and corrosion resistance while maintaining precise .040" compressed thickness.

Key Features

  • 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
  • .040in Compressed Thickness: Ideal for stock or mildly modified engines requiring proper compression height
  • No Sealants Required: Advanced design withstands shearing forces between aluminum heads and iron blocks

Specifications

Specification Detail
Part Number C4580-045
Position Left (Driver Side)
Bore Size 89mm Round
Compressed Thickness .040 inches
Number of Layers 3
Material Multi-Layer Stainless Steel w/ Viton Coating
Application Non-Turbo L28 Engines
Country of Origin United States
Warranty Limited

Product Notes

  • Left side gasket only – order matching right side (C4580-045R or equivalent) for complete set
  • Ideal for engine rebuilds, high-compression builds, or mild forced induction

Installation Notes

  • Estimated time: Included in full head gasket job (8-12+ hours), advanced difficulty
  • Use ARP head studs, proper torque sequence, and surface prep – professional engine builder recommended

This Part Fits

Year Make Model Notes
1975-1978 Nissan 280Z / 280Z 2+2 L28 2.8L Non-Turbo
1979-1980 Nissan 280ZX / 280ZX 2+2 / GL L28 2.8L Non-Turbo

Why Choose Cometic MLS Gaskets?

  • 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
  • Trusted by engine builders for reliability in boosted, high-compression, and naturally aspirated builds

Frequently Asked Questions

  • Q: Is this for turbo or non-turbo?
    A: Specifically non-turbo L28 applications different part for turbo variants.
  • Q: Do I need right side too?
    A: Yes, this is left side only order matching right side gasket for complete set.
  • Q: What thickness is compressed?
    A: .040 inches compressed ideal for stock or mildly modified engines.
  • Q: Do I need sealants?
    A: No, MLS design requires no additional sealants use proper torque sequence.

Shipping & Handling

  • Method: UPS/FedEx Ground
  • Availability: In stock, ships same or next business day
  • Packaging: Official Cometic retail box

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