Honda 16400-RCA-A01 Throttle Body Electronic Control Assembly

The 16400-RCA-A01 is an OEM electronic throttle body assembly designed for Honda and Acura V6 applications. It integrates a DC motor actuator and throttle position sensor to provide precise airflow metering under electronic throttle control (ETC) system management. The unit features an aluminum housing with composite components and a 6-pin electrical connector. This part supersedes 16400-RKB-003 (GMA3A) and is identified by Honda subsystem code GMA1A. It mounts directly to the intake manifold with factory bolt pattern and requires no modification for installation. The throttle bore diameter matches OEM specification for each applicable engine displacement. The assembly undergoes factory calibration for idle stability, throttle response linearity, and fail-safe limp-home operation.