Borla 22-23 Silverado 1500 ZR2/GMC Sierra 1500 AT4X Cat-Back(tm) Exhaust System S-Type (140914) 1604 Or Uses The Autometer 2244

Or Uses The Autometer 2244 Narrowband O2 Sensor

Featuring A Unique Sensor Engineered To Be Mounted Near The Crank Pulley Which Creates A Signal From 4 Machined Grooves Or 4 Raised Bolt Heads To Precisely Monitor Engine Speed

carbureted

's advanced muffler technology delivers great sound outside the vehicle with no drone or resonance inside the vehicle

Borla 22-23 Silverado 1500 ZR2/GMC Sierra 1500 AT4X Cat-Back(tm) Exhaust System S-Type (140914) 1604 Or Uses The Autometer 2244This system features the classic BORLA(r) S Type sound level and turn down tailpipes. It was designed specifically for the Silverado 1500 ZR2 and Sierra 1500 AT4X and delivers great sound without any drone. Replace the small muffler behind the primary muffler in the BORLA(r) "S Type" system with Polyphonic Harmonizer 60680 to attain the "ATAK(r)" sound level (louder than "S Type"). Optional "True Dual" Cat Back(r) system available, see the Related