ISR Performance KA24DE 7 Layer Exhaust Manifold Gasket

A blown exhaust manifold gasket on a KA24DE announces itself with ticking at cold start and, on a turbo setup, lost boost. The ISR Performance KA24DE 7 layer exhaust manifold gasket is a multi-layer replacement built to hold a seal through the heat cycling that kills single-layer and composite gaskets.

Why 7 Layers

• 7 layer design helps ensure the best possible seal between the head and manifold.
• Multiple metal layers conform to minor surface irregularities on both the head and the manifold flange.
• Well suited to the higher exhaust pressures and temperatures of a KA-T build, as well as naturally aspirated header installs.

Fitment

Nissan KA24DE engines only, as found in the 1991 to 1998 240SX. Not for KA24E single cam or SR20DET; ISR offers a separate multi-layer gasket for the SR.

Installation

Remove all traces of the old gasket from both surfaces, check the manifold flange for warpage with a straightedge, and install the gasket dry. Torque the manifold nuts in sequence from the center outward, then re-torque after the first full heat cycle. Fresh manifold studs and nuts are worth considering on a KA that has lived outside for 25 years, since the originals rarely come off cleanly.

All ISR Performance products are designed for off-road use only.