- Designed to address the severe airflow distribution issue with the factory upper plenum

- Direct bolt-on replacement for all 1986-1987 Buick Turbo Regals, as well as the 1989 20th Anniversary Turbo Trans Am

- Compatible with either a stock 58mm throttle body, a ported stock 62mm throttle body, or an Accufab 65mm or 70mm throttle body

- Includes a new GM upper plenum to intake gasket, and new fastener hardware, for a true bolt-on installation

- Available in cast or polished finish

Precision Turbo Buick Plenum