Dana engineering-approved for fit, form and function. 1998 Pontiac Firebird Engine: 5.7L V8; with Dual Round Ports; Replaces OE Part Number(s) 12561710; Position: Center;. 1999 Pontiac Firebird Engine: 5.7L V8; with Dual Round Ports; Replaces OE Part Number(s) 12561710; Position: Center;.
