Exhaust Gasket-JEEP L6 4.0L

The Exhaust Gasket for Jeep L6 4.0L (MPN 10-004) is a critical sealing component engineered to prevent exhaust leaks at the manifold-to-engine interface on Jeep's legendary 4.0-liter inline-six engine. This gasket exists because factory OEM gaskets deteriorate under sustained heat cycling and pressure, leading to manifold leaks that degrade performance and increase emissions. Whether you're restoring a classic TJ/YJ Wrangler, rebuilding an XJ Cherokee, or maintaining high-mileage ZJ Grand Cherokee, this replacement gasket ensures a proper seal without the risk of exhaust gas bypass.

Built to withstand the thermal stress of the 4.0L's exhaust manifold environment, the Exhaust Gasket for Jeep L6 4.0L features durable gasket material formulated to resist degradation from repeated heating and cooling cycles that exceed 1,000°F at the manifold surface. The design maintains its compression set under pressure, preventing exhaust leaks that can compromise both performance and fuel efficiency. At just 0.78 lbs with compact dimensions (5.1 x 0.45 x 34.35 inches), it's a direct-fit solution that requires no modification or shimming during installation—simply remove the old gasket, clean the mounting surface, and seat the new unit with OEM-torque specifications.

Mechanics and Jeep enthusiasts rely on this gasket when performing exhaust manifold work, engine rebuilds, or addressing persistent exhaust leaks on second-generation (1991–2001) Jeep platforms equipped with the robust 4.0L inline-six. The gasket is compatible across multiple model years and trim levels that utilize this engine family, making it an essential restoration part for off-road enthusiasts and daily-driver owners alike. Professional installation is straightforward for anyone with basic wrench skills; however, proper surface preparation and careful torque sequencing are essential to avoid future leaks and ensure maximum service life.