10 Degree Superlock Steel Retainer for 1.500"-1.550" OD Valve Spring 1998-pontiac-firebird-esi4271216 These mufflers utilize the same

These mufflers utilize the same patented Delta Flow® technology that is found in Flowmaster's other Super series mufflers to deliver maximum performance

This kit is ideal for aftermarket rear ends with 3

This O2/Wideband sensor is a direct replacement for the wideband O2 sensor that comes with all XFI 2

Every kit comes complete with new Grade 8 hardware for a seamless installation process

Classic Instruments Temperature Sender 1/2" NPT

10 Degree Superlock Steel Retainer for 1.500"-1.550" OD Valve Spring 1998-pontiac-firebird-esi4271216 These mufflers utilize the samethis 10 degree retainer is designed specifically for a 1. 500" 1. 550" O. D. valve spring.