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Cometic BMC 1.8L B-Series .040in MLS Cylinder 83mm Bore Head Gasket

SKU: CGSC4147-040

Head Gaskets

CG Head Gaskets...

Cometic BMC 1.8L B-Series .040in MLS Cylinder 83mm Bore Head Gasket

SKU: CGSC4147-040

Head Gaskets

CG Head Gaskets...

A$237.04
LOW STOCK! Est Ship 4-7 days. HURRY! LOW STOCK. This item is in limited stock at one of our distribution centres. The ETA is the approximate time required to prepare your order for dispatch.
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Description

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

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, it’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

  • Embossed Outer Layers Coated w/Viton

Product Details

Bore Diameter:83mm
Description:BMC 1.8L B-Series Cylinder Head Gasket
Engine Make/Size:MGB 1.8L 18G/18GA
Engine:MGB 1975-80 4 CYL 1.8L 18G/18GA
Part Number:cgsC4147-040
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:.040in
Title:Cometic Gasket Automotive BMC 1.8L B-Series .040 in MLS Cylinder Head Gasket, 83mm 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 00:07:56

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
C4147-040
Product Attributes - Part Type
Head Gaskets
Product Attributes - Product Line
Cometic MLS Head Gaskets
Product Attributes - UPC
191070017576
Product Attributes - Bore (in.)
3.268 in.
Product Attributes - Bore (mm)
83.000mm
Product Attributes - Gasket Material
Multi-layer stainless steel
Product Attributes - Compressed Thickness (in.)
0.040 in.
Product Attributes - Compressed Volume (cc)
5.497cc
Product Attributes - Lock Wire
No
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Cometic Gasket
StreetFX SKU cgsC4147-040
SFX Item ID 4168381
Supplier Item Code 4168381
Manufacturer SKU C4147-040
Manufacturer UPC N/A
Alternative References CGT-C4147-040, 1.8L, .040in, 83mm

Compatibility

Application Data
  • MakeMG
    Beginning Year1975
    Ending Year1980
    Engine TypeL4
    Engine FamilyBMC 4-cylinder
    Engine Size1.8L/1798cc

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