Looking for aftermarket parts to modify or upgrade your 1999 Audi A4 with oxygen sensors? At Tunersports.com we carry a huge selection of the top name brand performance oxygen sensor parts and accessories for your A4.
Whether you have a 1999 Audi A4 in Base trim we have you covered. We have 2 oxygen sensors available to mod your A4. All parts have free shipping to the Continental US 48 States.
 OUT OF STOCK 25550NTK® is The Sensor Specialist™ for import and domestic applications. Established under the NGK family of products, NTK Oxygen Sensors are part of our ongoing commitment to streamline product types and increase coverage. A ceramics company at our core, NTK uses state-of-the art technology enabling... NGK Audi A4 1999-1997 Direct Fit Oxygen Sensor 1997-1999 Audi A4 Base $87.56 |
 OUT OF STOCK 25552NTK® is The Sensor Specialist™ for import and domestic applications. Established under the NGK family of products, NTK Oxygen Sensors are part of our ongoing commitment to streamline product types and increase coverage. A ceramics company at our core, NTK uses state-of-the art technology enabling... NGK Audi A4 1999-1996 Direct Fit Oxygen Sensor 1996-1999 Audi A4 Base $101.60 |