2007 Cadillac STS 4-Pc Oxygen Sensor Upstream & Downstream 4-Pin A-Premium APOS1999

A-Premium Aftermarket Oxygen Sensor: Built for Great Performance
A-Premium Oxygen Sensor is designed to deliver exceptional performance for your vehicle. Backed by our 3-Year unlimited mileage warranty, tough working conditions are no longer a concern.

• Installation Position: Upstream & Downstream
• 4-PC A-Premium Oxygen Sensor
• Formulated to precisely correspond with the specifications of your vehicle.
• Maintains the correct air-fuel ratio for boosted operational efficiency.
• A recognized leader in quality and affordability.
• Constructed with pioneering technology for increased durability.

Exceeds Safety Certification Requirements. A-Premium Oxygen Sensors meet exacting safety and quality benchmarks, providing unwavering performance for your car's emissions system.
Efficient Combustion. With precise oxygen monitoring in the exhaust stream, the sensor ensures the engine's combustion process stays optimal, ultimately improving fuel economy and decreasing emissions.