M50 Manifold Conversion Adapter Kit

The Turner Motorsport M50 Manifold Conversion Adapter Kit facilitates the installation of an OBDI M50 intake manifold onto OBDII M52 or S52 engines from 1996-1999. This kit is essential for enthusiasts looking to leverage the higher-RPM powerband of the M50 manifold, a modification popular for track-oriented vehicles. The kit includes a precision-machined CNC adapter, all required hardware, and gaskets, ensuring a leak-free and fully reversible installation that maintains the functionality of stock M52/S52 components, including the PCV cyclone/oil separator. This conversion addresses the restrictive nature of the factory OBDII M52/S52 intake manifold, which, while boosting low-end torque, limits high-end horsepower compared to the M50/S50 series. By installing the M50 manifold, users can unlock improved top-end power, particularly when combined with other upgrades such as larger cams, a high-flow mass airflow sensor (HFM), and engine software. It is important to note that this modification shifts the power band higher, which may be less ideal for street cars primarily driven at lower RPMs. Turner Motorsport offers custom-tuned Shark Injectors designed to maximize gains from specific upgrade packages that include the M50 manifold. Optional accessories are available to complement the installation, such as a modified fuel rail cover that accommodates the M50 manifold's different geometry and mounting points. A PDF installation guide is also provided. Please be aware that installation may require modification to the ICV breather tube.