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The BBK Power-Plus twin 58mm throttle body for 1989–1992 GM 305/350 is a direct-replacement, high-flow unit designed to improve airflow and throttle response while maintaining OEM drivability. CNC-machined from 356 aluminum and assembled with OEM-style linkages and sealed bearings, it works with the factory tune and requires no additional tuning for enhanced throttle feel.
BBK 89-92 GM 305 350 Twin 58mm Throttle Body BBK Power Plus Series
