2001 Audi S4 2-Pc Oxygen Sensor Upstream & Downstream 4-Pin A-Premium OS218

A-Premium Aftermarket Oxygen Sensor: Multiple Options Available
With A-Premium, you have a variety of expertly engineered Oxygen Sensor options to suit your vehicle's needs. Each replacement is backed by a 3-Year unlimited mileage warranty for peace of mind. Use our Vehicle Selector to explore multiple options and find the perfect fit.

• Installation Position: Upstream & Downstream
• 2-PC A-Premium Oxygen Sensor
• Produced to match outstanding safety and performance expectations.
• Demonstrates capability to boost engine output and promote fuel economy.
• Precisely tuned to fulfill your vehicle’s specific demands.
• A brand built upon seasoned expertise in the automotive field.

Uncomplicated Preservation & Transition. A-Premium Oxygen Sensors are crafted for an easy changeover, with a replacement guideline of 60,000 miles to uphold fuel performance and emission control.
Crafted for Resistance. Formed from strong materials, A-Premium Oxygen Sensors are built to endure extreme situations, providing consistent performance over an extended life cycle.