Cometic GM LS Gen-3/4 Small Block V8 .027in MLS Cylinder Head Gasket - 4.100in Bore

SKU: CGSC5489-027

Head Gaskets

CG Head Gaskets...

Cometic GM LS Gen-3/4 Small Block V8 .027in MLS Cylinder Head Gasket - 4.100in Bore

Cometic Gasket

Cometic GM LS Gen-3/4 Small Block V8 .027in MLS Cylinder Head Gasket - 4.100in Bore

SKU: CGSC5489-027

Head Gaskets

CG Head Gaskets...

IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.

We accept

Description

MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel

Product Overview

Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0.036". World Products Man-o-War Block. 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.

Features and Benefits

Embossed Outer Layers Coated w/Viton

Product Details

Description:	GM LS1/LS2/LS3/LS6 Gen-3/4 Small Block V8 Cylinder Head Gasket
Engine Make/Size:	GM Gen III/IV LS Series
Part Number:	cgsC5489-027
Prop 65 (C, R or CR):	CR
Prop 65 - Short Label:	Prop_65.jpg
Prop 65 Warning Label:	Prop_65.jpg
Prop 65 Yes/No:	Yes
Title:	Cometic Gasket Automotive GM LS Gen-3/4 Small Block V8 .027 in MLS Cylinder Head Gasket, 4.100 in Bore
WARNING CA Proposition 65 Message:	The state of California has determined that certain chemicals used in the manufacture of this product have been known to cause cancer and birth defects. For more information; visit www.p65Warnings.ca.gov
WARNING CA Proposition 65:	Yes

Part Type

Engine Cylinder Head Gasket

Data: v4.2 - Upd: 2026-10-14 00:03:55

Features

Conforms load distribution across the sealing area
Embossed Outer Layers Coated w/Viton
Requires less clamp load creating less bore distortion
The center or shim layer is an uncoated stainless steel layer which can be varied to accommodate multiple thickness requirements
The embossed outer layers of the gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes

Specifications

Product Attributes - Brand: Cometic
Product Attributes - Manufacturer's Part Number: C5489-027
Product Attributes - Part Type: Head Gaskets
Product Attributes - Product Line: Cometic MLS Head Gaskets
Product Attributes - UPC: 00191070042301
Product Attributes - Bore (in.): 4.100 in.
Product Attributes - Bore (mm): 104.140mm
Product Attributes - Gasket Material: Multi-layer stainless steel
Product Attributes - Compressed Thickness (in.): 0.027 in.
Product Attributes - Compressed Volume (cc): 5.841cc
Product Attributes - Lock Wire: No
Product Attributes - Quantity: Sold individually.

Reference Information

Brand Name/s	Cometic Gasket
StreetFX SKU	cgsC5489-027
SFX Item ID	4171344
Supplier Item Code	4171344
Manufacturer SKU	C5489-027
Manufacturer UPC	191070042301
Alternative References	CGT-C5489-027, Gen-3/4, .027in, 4.100in

Brochures

Compatibility

Application Data

Make CHEVROLET
Beginning Year 1997
Ending Year 2004
Engine Type V8
Engine Family Chevy small block Gen III/IV (LS-based engines)
Engine Size 5.7L/350
Make CHEVROLET
Beginning Year 1999
Ending Year 2013
Engine Type V8
Engine Family Chevy small block Gen III/IV (LS-based engines)
Engine Size 4.8L/294
Make CHEVROLET
Beginning Year 1999
Ending Year 2013
Engine Type V8
Engine Family Chevy small block Gen III/IV (LS-based engines)
Engine Size 5.3L/325
Make CHEVROLET
Beginning Year 1999
Ending Year 2014
Engine Type V8
Engine Family Chevy small block Gen III/IV (LS-based engines)
Engine Size 6.0L/364
Make CHEVROLET
Beginning Year 2008
Ending Year 2014
Engine Type V8
Engine Family Chevy small block Gen III/IV (LS-based engines)
Engine Size 6.2L/376