Exhaust Parts for Jeep CJ5
Gaskets, Flange Seals & Catalytic Converters for Reliable Exhaust Flow (1955–1971).
Why the Exhaust System of the Jeep CJ5 Wears Out Over the Years.
The exhaust system of the Jeep CJ5 (1955–1971) is exposed to heat, vibration, and moisture on every drive – wear is essentially unavoidable after decades of service. Manifold gaskets harden under the intense heat generated at the engine and lose their sealing ability, leading to noticeable hissing sounds and a loss of power. The gasket at the lower flange sits at a mechanically demanding connection point and should always be replaced together with the rest of the gasket set. Flange gaskets between the manifold and exhaust pipe wear out from repeated expansion and contraction and become porous over time. Anyone retrofitting their vehicle for road use or aiming to improve emissions also needs a suitable catalytic converter. Especially on historic engines like the F-134cui Hurricane or later 3.8/4.2L six-cylinders, a regular visual inspection of the entire system pays off, catching leaks early and avoiding costly follow-up damage.
- Manifold Gasket Kit: The complete manifold gasket kit for the F-134cui Hurricane engine replaces the center, outer and exhaust manifold gaskets in one go.
- Lower Manifold Flange Gasket: The lower flange gasket ensures a reliable connection between intake and exhaust manifold on the 3.8/4.2L six-cylinder engines.
- Catalytic Converters: Whether 2.5" or 2.0" – our 2.5-inch catalytic converter and 2.0-inch catalytic converter fit universally across Jeep CJ models.
- Flange Gasket: The exhaust-to-manifold gasket prevents leaks right at the engine block.
American Brand Expertise for the Historic Exhaust System.
The manifold gasket kit, flange gasket and exhaust-to-manifold gasket come from Crown Automotive – one of the best-known names in Jeep and Willys parts, made in the USA. Both catalytic converter sizes are supplied by AP Exhaust out of North Carolina, another example of American engineering. Both brands stand for precisely fitted reproductions in series quality, matched exactly to the CJ5's historic engine variants.
Your Partner for the Jeep CJ5 Exhaust System.
If you're unsure which gasket variant fits your engine – F-134cui Hurricane or 3.8/4.2L six-cylinder – or which catalytic converter size to choose, we're happy to advise, including torque specs, installation order, and compatibility questions for related CJ and Willys models. Your order ships from our warehouse as fast as possible, so you're back on the road with a tight, quiet exhaust system in no time.