Oxygen Sensors for Honda Ridgeline (2006-2008) 3.5L Downstream

Direct-Fit Downstream Oxygen Sensor Kit for 2006-2008 Honda Ridgeline

What it Does: The Downstream Oxygen Sensor Kit monitors post-catalytic converter exhaust gases on the 2006-2008 Honda Ridgeline to verify catalyst efficiency and maintain accurate secondary air-fuel feedback to the PCM.

The Stock Honda Ridgeline Catalyst Monitoring Degradation

High-mileage factory zirconia O2 sensors on the J35A9 V6 platform suffer from thermal degradation, exhaust soot deposition, and silica poisoning. Over time, internal heater element resistance drifts and sensor response rates slow drastically. This sensor lag causes the engine control module to misinterpret post-catalyst oxygen storage capacity, resulting in unwarranted P0420 and P0430 DTC faults, rough idle feedback loop oscillations, and failed state emissions inspections.

The Engineering Solution

This 2-piece downstream oxygen sensor set is engineered to direct-fit OE standards for both rear bank locations. Built with premium ceramic sensing elements and integrated fast-acting internal heaters, these sensors reach operating temperatures quickly to minimize cold-start emissions loops. Each unit features a durable 304 stainless-steel outer body, laser-welded waterproof seals, and breathable PTFE membranes that guard against underbody moisture and road brine contamination. Precision-threaded bungs allow clean installation to restore accurate millivolt readings to the factory ECU.

Technical Specifications

Compatibility

• 2006-2008 Honda Ridgeline RT 3.5L V6
• 2006-2008 Honda Ridgeline RTS 3.5L V6
• 2006-2008 Honda Ridgeline RTL 3.5L V6
• 2007-2008 Honda Ridgeline RTX 3.5L V6

Frequently Asked Questions

Does this fit the YK1 Ridgeline?
Yes, this is a direct fit for the 2006-2008 Honda Ridgeline equipped with the J35A9 engine.

Does this kit require wire cutting or repinning?
No, these sensors utilize factory-correct connectors and harness lengths for a direct plug-and-play installation.

The Honda Truck Standard

Maintaining proper fuel trims and catalyst diagnostics is essential for maintaining towing capability, fuel efficiency, and drivetrain durability under heavy utility use in your first-generation Ridgeline.