Cometic BMC 948/1098 A Series .063in Copper Cylinder Head Gasket - 67.5mm Bore

SKU: CGSC4145-063

Head Gaskets

CG Head Gaskets

Cometic BMC 948/1098 A Series .063in Copper Cylinder Head Gasket - 67.5mm Bore

Cometic Gasket

Cometic BMC 948/1098 A Series .063in Copper Cylinder Head Gasket - 67.5mm Bore

SKU: CGSC4145-063

Head Gaskets

CG Head Gaskets

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Description

Requires less clamp load

Product Overview

Cometic Head Gaskets are developed with the performance enthusiast in mind. With so many individual requirements for each motor Cometic offers a number of options to suit your specific motor and needs. *MLS* The Cometic MLS gasket is comprised of three layers of Stainless Steel. Cometic uses Stainless steel for increased strength, itâ€™s ability to rebound and corrosion resistance. The outer layers of the gasket are embossed and coated on both sides with a flouroelastomer rubber based material (Viton) designed to meet the demands of a variety of harsh sealing environments, load conditions and surface finishes. The Viton coating is heat resistant to 2500C or 4820F. The center or shim layer of the gasket is comprised of an uncoated Stainless Steel layer, which can be varied to accommodate multiple thickness requirements. The MLS gasket is ideal for both aluminum heads to cast iron blocks and aluminum heads to aluminum blocks. The composition of MLS will also withstand the shearing forces created by aluminum heads on cast iron blocks. No re-torque is necessary. By design the MLS gasket promotes an even torque load across the sealing surface allowing for measurable reduced bore distortion. *CFM-20* A perforated steel core with an elastomer surface is ideal for head gaskets allowing heat to be drawn evenly across the gasket surface while providing maximum sealing characteristics when exposed to coolants and oils. *COPPER*

Features and Benefits

For Engines That Have Already Been Machined For Steel O-Rings

Product Details

Bore Diameter:	67.5mm
Description:	BMC 948/1098 A Series Cylinder Head Gasket
Engine Make/Size:	Austin 1000cc 4cyl.
Engine:	Austin 1000cc 4cyl
Material:	Copper
Part Number:	cgsC4145-063
Position:	N/A
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
Thickness:	.063in
Title:	Cometic Gasket Automotive BMC 948/1098 A Series .063 in Copper Cylinder Head Gasket, 67.5mm 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: 2026-10-12 07:46:45

Features

Conforms load distribution across the sealing area
Creates less bore distortion
For Engines That Have Already Been Machined For Steel O-Rings
No sealants or re-torque required

Specifications

Product Attributes - Brand: Cometic
Product Attributes - Manufacturer's Part Number: C4145-063
Product Attributes - Part Type: Head Gaskets
Product Attributes - Product Line: Cometic Copper Head Gaskets
Product Attributes - UPC: 191070101398
Product Attributes - Bore (in.): 2.657 in.
Product Attributes - Bore (mm): 67.500mm
Product Attributes - Gasket Material: Copper
Product Attributes - Compressed Thickness (in.): 0.063 in.
Product Attributes - Compressed Volume (cc): 5.724cc
Product Attributes - Lock Wire: No
Product Attributes - Quantity: Sold individually.

Reference Information

Brand Name/s	Cometic Gasket
StreetFX SKU	cgsC4145-063
SFX Item ID	4172027
Supplier Item Code	4172027
Manufacturer SKU	C4145-063
Manufacturer UPC	191070101398
Alternative References	CGT-C4145-063, .063in, 67.5mm