Oxygen Sensors for Jeep Grand Cherokee (2014-2019) 3.6L Upstream & Downstream

Direct-Fit Oxygen Sensor Set for 2014-2019 Jeep Grand Cherokee (WK2)

What it Does: The Oxygen Sensor Set replaces all four factory monitoring probes on the 2014-2019 Grand Cherokee to restore closed-loop fuel trim accuracy, engine responsiveness, and catalytic converter monitoring.

The Stock Jeep Grand Cherokee Sensor Degradation

Over extended heat cycles, factory zirconium dioxide sensing elements inside the WK2 exhaust stream succumb to thermal shock, carbon soot, and silica poisoning. On the 3.6L Pentastar V6, aged upstream probes become sluggish, reporting false lean signals to the powertrain control module (PCM). This latency corrupts short-term fuel trims, forcing excessive fuel dumping, unburned hydrocarbons, reduced fuel economy, and catalytic converter overheating. Concurrently, degraded downstream sensors trigger persistent diagnostic trouble codes including P0130, P0161, P0420, and P0430, resulting in failed emissions tests and intermittent engine hesitation under load.

The Engineering Solution

This 4-piece replacement set resolves closed-loop fuel calculation errors by utilizing fast-acting, high-temperature ceramic sensing cores shielded by dual-layer stainless steel protective housings. Engineered to OE electrical resistance specifications, each sensor features factory-calibrated 4-pin plug-in pigtails, correct harness lengths, and precision-cut M18x1.5 threads for an airtight seal in factory exhaust bungs. Pre-treated thread sections simplify installation and prevent thread galling in high-heat manifolds. By swapping both upstream wideband/air-fuel sensors and downstream catalyst monitors simultaneously, you establish uniform cross-bank response times, eliminate CEL illumination, and protect the downstream emissions catalysts from raw fuel washout.

What's Included

• 2 Upstream Oxygen Sensors
• 2 Downstream Oxygen Sensors

Technical Specifications

Compatibility

• 2014-2019 Jeep Grand Cherokee 3.6L V6 (All trim levels including Laredo, Limited, Overland, Summit, and Trailhawk)

Frequently Asked Questions & Fitment Warnings

Does this fit the WK2 Grand Cherokee?

Yes, this is a direct fit for the 2014-2019 Jeep Grand Cherokee equipped with the 3.6L Pentastar V6 engine.

Do I need special tools or anti-seize during installation?

Use a dedicated 7/8-inch (22mm) oxygen sensor socket, apply anti-seize to the threads only while avoiding the sensing tip, and route wiring away from direct exhaust contact.

The Jeep Standard

Engineered to endure the rigorous thermal cycling of trail exploration and heavy-load towing, these sensors preserve the powertrain durability and factory emissions compliance of your Grand Cherokee.