Mazworx S13 SR20DET Intake Manifold

Designed specifically for the Nissan S13 chassis equipped with the SR20DET engine, the Mazworx Intake Manifold delivers improved performance across the RPM range. Unlike the OEM manifold, which primarily focuses on low-end torque, this Mazworx design maintains strong low-end torque while enhancing both torque and horsepower as engine speeds increase.

Back-to-back dyno testing on a GT3071R turbocharged SR20DET running 17 psi boost — originally Kelsey Rowlings’ drift setup — shows noticeable gains compared to the factory manifold. You can view test results and comparison photos courtesy of RS Enthalpy on their Facebook page.

Key Features

• Billet one-piece runner section for enhanced airflow
• Four injector pockets designed to fit 14mm x 48mm injectors
• Includes a single fuel rail for simplified installation
• Multiple throttle body flange options to fit a variety of throttle bodies, including Q45, Bosch 74mm/82mm DBW, and Mustang sizes 75mm to 90mm
• Comes standard with the S13 Idle Air Control Valve (IACV); models with Drive-By-Wire (DBW) throttle bodies do not include an IACV
• Optional black anodized finish covering both interior and exterior surfaces for durability and aesthetics

This manifold is engineered to offer a seamless upgrade from the OEM part without sacrificing the drivability and throttle response that enthusiasts expect. Its versatility with throttle body options and injector accommodations makes it suitable for a range of setups.