TOMEI USA is proud to announce the re-release of the KA24 Turbo Exhaust Manifold!

We have enhanced materials and manufacturing while preserving the original design, achieving greater durability, performance, and a sleek appearance.
Since its launch in 2015, this manifold has earned high praise from 240SX S13/S14 owners.
Designed for seamless compatibility with SR20 components, it enables efficient turbocharging for KA24 engines, delivering a significant performance boost.
However, due to mold deterioration, production was discontinued in 2022.
Now, after three years of development, it returns with major refinements.
We upgraded from cast iron to high-quality stainless steel, using advanced lost-wax casting for superior durability, heat resistance, and easier installation.
Optimized for the KA24’s long-stroke design, this manifold delivers smooth, torque-rich power, excelling in both daily driving and high-performance applications.
We appreciate your patience and support. This is our best version yet, and we hope all KA24 enthusiasts will enjoy its benefits.
Unlock the full potential of Nissan’s KA24 engine with this advanced turbocharging solution!

Material / Manufacturing Method
Upgraded the material from cast iron to stainless steel heat-resistant cast steel.
Adopted the lost-wax casting method, achieving superior precision and durability

Performance
Basic Performance Maintenance
The design adheres to conventional principles, maintaining baseline performance characteristics.
Enhanced Heat Resistance
Improved heat resistance from 700–800°C to over 1,000°C, significantly enhancing durability under high-temperature conditions.
Improved Corrosion Resistance
Reduces rust formation, preserving an aesthetically pleasing appearance over an extended period.
Optimized Intake Temperature
Lower engine bay temperatures contribute to improved intake temperatures, enhancing overall engine efficiency.

The KA24 engine features a long 96mm stroke, making it less suitable for high RPMs despite being a naturally aspirated (NA) engine.

While the KA24 is not originally equipped with a turbocharger, it is, in fact, highly compatible with forced induction.

Turbocharging enhances the inherent benefits of its long-stroke design, significantly increasing low- to mid-range torque.

As a result, it enables a more enjoyable and dynamic driving experience, whether in city traffic or on the racetrack, delivering both power and comfort across various driving conditions.