Mopar Performance 68021056AA Oxygen Sensor Before Catalyst

The Mopar Performance 68021056AA is a genuine OEM oxygen sensor designed for installation before the catalytic converter on the left or right side of the exhaust system. This sensor is designated for vehicles produced after July 28, 2006.

Function and Purpose:

This upstream oxygen sensor plays a critical role in your vehicle's engine management system by monitoring the oxygen content in exhaust gases before they reach the catalytic converter. The sensor sends real-time data to the Engine Control Unit (ECU), which uses this information to adjust the air-fuel mixture for optimal combustion efficiency, reduced emissions, and improved fuel economy. Proper oxygen sensor function is essential for maintaining peak engine performance and meeting emissions standards.

Key Features:

• Genuine Mopar Performance OEM part ensures perfect fit and function
• Before-catalyst (upstream) placement for primary air-fuel ratio monitoring
• Compatible with left or right side installation
• Direct replacement for factory-installed oxygen sensors
• Precision-engineered to OE specifications for reliability
• Helps prevent check engine light illumination due to sensor failure

Signs You May Need Replacement:

Common symptoms of a failing oxygen sensor include decreased fuel economy, rough engine idle, check engine light activation, increased emissions, and poor engine performance. Replacing a faulty oxygen sensor with this genuine Mopar part will restore proper engine operation and help your vehicle run efficiently.

Installation:

This is a direct-fit replacement sensor that threads into the exhaust manifold or exhaust pipe. The electrical connector provides plug-and-play installation for straightforward replacement. Always consult your vehicle's service manual for proper installation procedures and specifications.