GReddy Plenum Intake Manifold w/ 90mm Throttle Body Nissan Skyline GT-R R32/R33/R34 RB26DETT 1989-2002 | 13522307

Maximize the performance potential of your RB26DETT engine with the GReddy RB26 Single Throttle Surge Tank with 90mm Throttle Body (Part Number 13522307). Designed for high-horsepower Nissan Skyline GT-R builds, this premium intake plenum replaces the factory individual throttle body configuration with a large single 90mm throttle body and an oversized 4.1-liter surge tank to improve airflow, increase horsepower, and enhance mid-range torque. Engineered specifically for the Nissan Skyline GT-R BNR32, BCNR33, and BNR34, this intake system is ideal for high-boost street, drag, and circuit racing applications.

The GReddy intake plenum features a 4.1-liter collector surge tank, providing approximately 121% greater volume than the factory plenum for improved airflow and cylinder distribution. Constructed from 3mm-thick formed aluminum, the surge tank is welded to a precision-machined base plate for exceptional rigidity under high boost pressures. Six integrated internal velocity stacks and CNC-machined tapered intake runners are engineered to maximize airflow efficiency, throttle response, and power delivery throughout the RPM range.

A large 90mm throttle body with a low-profile throttle shaft minimizes airflow restriction while supporting increased horsepower. The system utilizes specially designed O-ring seals between the plenum and runners to provide superior sealing under extreme boost conditions. The kit is also compatible with the factory AAC idle control valve and OEM throttle position sensor (TPS), simplifying installation while retaining important engine management functions.

During GReddy testing on a high-powered 958 HP Nissan Skyline R32 GT-R, installation of the surge tank increased output to 1,023 horsepower and 697 lb-ft of torque, demonstrating substantial gains throughout the RPM range on a properly built engine. This intake manifold is engineered for serious performance applications where maximum airflow and high-boost durability are essential.

Features

• GReddy RB26 single throttle surge tank conversion
• Part Number: 13522307
• Large 4.1-liter collector surge tank
• Approximately 121% larger than the factory plenum
• Includes 90mm throttle body
• Precision CNC-machined tapered intake runners
• Six integrated internal velocity stacks
• 3mm-thick formed aluminum surge tank construction
• Precision-machined base plate with welded assembly
• O-ring sealed runner design for superior boost sealing
• Compatible with OEM AAC valve and throttle position sensor (TPS)
• Durable anodized finish for corrosion and scratch resistance
• Direct-fit kit for RB26DETT GT-R applications

Benefits

• Supports high-horsepower and high-boost engine builds
• Increases airflow capacity throughout the RPM range
• Improves mid-range torque and top-end horsepower
• Faster throttle response with reduced airflow restriction
• Superior sealing for reliable performance under high boost
• Maintains compatibility with factory idle control and TPS systems
• Ideal for street, drag racing, and circuit applications

Installation Notes

• Direct-fit kit for compatible RB26DETT engines.
• Compatible with the factory AAC idle control valve and OEM throttle position sensor.
• Designed for high-performance and racing applications.
• Professional installation and ECU calibration are recommended to achieve optimal performance after installation.