O2 Oxygen Sensor Set; Upstream and Downstream (99-10 Mustang)Find parts that fit my vehicle

Quantity: 4 Piece
Kit Includes:
(2) Downstream O2 Oxygen Sensors
(2) Upstream O2 Oxygen Sensors
TRQ oxygen sensors are manufactured to precise specifications using premium raw materials to optimize your vehicle’s emission system. Each sensor is isostatically-pressed for improved strength and durability, and plasma-sprayed to improve sensitivity and prolong the service life of the sensors. Oxygen sensors wear out over time and should be replaced every 60,000 miles to prevent poor engine performance. TRQ recommends replacing the oxygen sensors in sets to optimize fuel economy and reduce overall emissions. All products are fit and road-tested in our Massachusetts R&D facility to ensure we deliver on our promise of Trusted Reliable Quality.

Product Features

Application Specific Design: No modifications and pre-calibrated
Isotatic-pressed and plasma-sprayed for extended service life
Double-Layered 310S Stainless Steel: Additional protection from moisture and debris
Restored Engine Performance: Improved fuel economy and lower emissions
What is Upstream vs. Downstream?

Upstream location is between the catalytic converter and the engine
Downstream location is between the catalytic converter and the tailpipe


Install Tip: You may be required to reset the vehicle computer after installation of this part.

Item Condition: New
Attention California Customers:

proposition 65 iconWARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov