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The Cometic 09+ GM LS9 4.100in Bore .040 thick MLS RHS Head Gasket - C5985-040 is a precision-engineered head gasket with a 4.100" bore and .100" compressed thickness for the Right-Hand Side (RHS).
The Cometic Multi-Layer Steel (MLS) head gasket is engineered for high-performance and racing applications where OEM gaskets fall short. Featuring Multi-Layer Steel (MLS) construction, this gasket uses multiple embossed steel layers that conform to surface irregularities and maintain a positive seal. Precision CNC-machined to exacting tolerances, this gasket seals combustion, water jackets, and oil passages simultaneously — eliminating the need for multiple gaskets or sealing compounds.
Verified fitment: Cadillac CTS (2009–2015); Chevrolet Camaro (2012–2015); Chevrolet Corvette (2009–2013).
Free U.S. standard shipping on qualifying orders $199+. Special order and made-to-order items can't be cancelled or refunded once ordered.
We carry 750,000+ parts, so we can probably still get it. Check the spelling, try the part number, or ask us.
Request this part Text us (833) 691-5717