Cometic 09+ GM LS9 4.100in Bore .051 thick MLX LHS Head Gasket

SKU: CGSC5986-051

Head Gaskets

CG Head Gaskets...

Cometic 09+ GM LS9 4.100in Bore .051 thick MLX LHS Head Gasket

Cometic Gasket

Cometic 09+ GM LS9 4.100in Bore .051 thick MLX LHS Head Gasket

SKU: CGSC5986-051

Head Gaskets

CG Head Gaskets...

LOW STOCK! Est Ship 3-5 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

MLX Gaskets utilize an integrated "stopper" layer for combustion chamber sealing

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, itÃ¢â‚¬â„¢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

Requires No Sealants Or Re-Torque

Product Details

Bore Diameter:	4.100in
Description:	GM LS9/LSA Gen-4 Small Block V8 Cylinder Head Gasket
Engine Make/Size:	GM Gen IV Small Block LS9
Engine:	GM Gen IV Small Block V8
Part Number:	cgsC5986-051
Position:	Left
Prop 65 (C, R or CR):	CR
Prop 65 - Short Label:	Prop_65.jpg
Prop 65 Yes/No:	Yes
Thickness:	.051in
Title:	Cometic Gasket Automotive GM LS9/LSA Gen-4 Small Block V8 .051 in MLX Cylinder Head Gasket, 4.100 in Bore, LHS
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

Additional Information

LS9 Applications only

Part Type

Engine Cylinder Head Gasket

Data: v4.2 - Upd: 2026-10-13 17:21:02

Features

Improved clamp load around the cylinder without increasing bore distortion
Requires No Sealants Or Re-Torque

Specifications

Product Attributes - Brand: Cometic
Product Attributes - Manufacturer's Part Number: C5986-051
Product Attributes - Part Type: Head Gaskets
Product Attributes - Product Line: Cometic MLX Head Gaskets
Product Attributes - UPC: 191070029500
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.): 0.051 in.
Product Attributes - Compressed Volume (cc): 11.034cc
Product Attributes - Lock Wire: No
Product Attributes - Quantity: Sold individually.
Product Attributes - Notes: Driver side head gasket for use with LS9 applications only.

Reference Information

Brand Name/s	Cometic Gasket
StreetFX SKU	cgsC5986-051
SFX Item ID	4159404
Supplier Item Code	4159404
Manufacturer SKU	C5986-051
Manufacturer UPC	191070029500
Alternative References	CAGC5986-051, CGT-C5986-051, LS9, 4.100in