Bosch 82mm Electronic Throttle Body – Includes connector and pins Diameter: 82mm

Maximum Airflow: Bosch 82mm Electronic Throttle Body

For high-horsepower applications where airflow restriction is the enemy, the Bosch 82mm Electronic Throttle Body is the definitive solution. Engineered for large-displacement or heavily boosted engines, this unit offers a massive 82mm bore, significantly increasing volumetric efficiency compared to standard 60-70mm units. As a genuine Bosch Motorsport component, it brings OEM-level reliability to the aftermarket, featuring a powerful internal DC motor and a high-precision dual-potentiometer feedback system. This throttle body is designed to be controlled by advanced standalone ECUs like the Haltech Nexus and Elite series, enabling features such as drive-by-wire idle control, traction control via throttle modulation, and rev-matching downshifts.

Performance Dynamics and Sizing

Selecting an 82mm throttle body is a strategic choice for engines producing substantial power (typically 800HP+ or large displacement V8s/2JZs). The increased cross-sectional area reduces the pressure drop across the throttle plate at wide-open throttle (WOT), allowing the intake manifold to fill more efficiently. However, with great size comes the need for precise control. The Bosch actuator is renowned for its speed and torque, capable of resisting the high closing forces generated by boost pressure acting on the butterfly plate. The dual-redundant position sensors ensure that the ECU always has a verified reading of the plate angle, a non-negotiable safety feature for any DBW setup.

Installation Notes

This unit is sold as a kit including the mating connector and pins, simplifying the wiring process. It requires a specific 4-bolt mounting pattern (adapter flanges are widely available for various intake manifolds). Tuners should note that moving to a larger throttle body requires recalibration of the idle control PID loops and throttle area tables in the ECU to prevent touchy tip-in response or idle oscillation.

Technical Specifications