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The Cometic 91-03 Jeep 4.0L Inline-6 4.000in Bore .040in MLS Head Gasket - C5988-040 is a precision-engineered head gasket with a 4.000" bore and .000" compressed thickness.
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: Jeep Cherokee (1987–2001); Jeep Comanche (1987–1992); Jeep Grand Cherokee (1993–2004); Jeep Wagoneer (1987–1990); Jeep Wrangler (1991–1995, 1997–2006).
Free Canadian shipping on qualifying orders $399+, with no duties or brokerage. Special order and made-to-order items can't be cancelled or refunded once ordered. Oversized items may carry a handling fee depending on your location; pickup in Mississauga has no fee.
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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