The 1987-89 Pontiac Firebird 2.8l Multiport Idler Pulley Bracket is a vintage part manufactured by Pontiac GM. This idler assembly is not universally fitting and is specifically designed for the 2.8l engine in the Firebird model. It is not a performance part, making it ideal for those looking to replace a worn-out or damaged idler pulley bracket on their vintage Pontiac Firebird.