ACAUTO Oxygen O2 Sensor Kit for Acura MDX & Honda V6 — 4-Piece Direct-Fit (Upstream & Downstream)

ACAUTO 4-piece oxygen sensor kit replaces OEM 234-5010/234-4355/234-4368 to restore accurate O2 readings for Acura MDX and compatible Honda V6 vehicles.

If your check engine light or fuel economy changed after many miles, a worn oxygen sensor can be the cause. This ACAUTO kit includes the upstream and downstream sensors needed to match factory-style fitment on a range of Acura and Honda V6 cars and SUVs, allowing you to replace faulty sensors with direct-fit, pre-wired components designed to plug into the original harness without major modification.

Which vehicles and engines will these sensors fit?

This kit is tailored for several Acura and Honda V6 applications. Fitment covers front (upstream) and rear (downstream) positions across years where the referenced OE numbers were used.

• Acura MDX V6 3.5L: 2003–2006
• Acura RL V6 3.5L: 2005–2008
• Acura TL V6 3.2L: 2004–2006
• Honda Accord V6 3.0L: 2003–2007
• Honda Odyssey V6 3.5L: 2005–2006
• Honda Pilot V6 3.5L: 2005–2008
• Honda Ridgeline V6 3.5L: 2006–2008

How does this ACAUTO kit match OEM part numbers?

The sensors in this set are manufactured to replace specific factory numbers so you can order by the OE reference and be confident of compatibility. They are built to meet the connector and wiring count of the original parts for a plug-and-play swap.

• Upstream replacements: 2 x 234-5010 (5-wire, sensor-to-lead length 292 mm)
• Downstream replacements: 1 x 234-4355 and 1 x 234-4368 (4-wire lengths ~515 mm / 20.3 in)
• Designed to match OEM electrical pinouts and harness styles
• Sold as a four-piece kit covering both banks and pre-/post-catalyst positions

What are the practical benefits and installation notes?

Replacing failing O2 sensors can improve engine management data available to your ECU, which helps maintain consistent air–fuel readings. ACAUTO produces these sensors with corrosion-resistant materials and factory-style leads to simplify installation and resist exhaust-area conditions.

• Improves sensor-feedback accuracy for fuel-trim adjustments
• Pre-wired harnesses reduce need for splicing or adapters
• Sensor materials chosen for high-temperature and anti-corrosion performance
• Basic hand tools and an O2 sensor socket typically complete the job

Will these sensors trigger compatibility warnings or need reprogramming?

These are direct-replacement oxygen sensors engineered to the same wire-count and connector types as the original parts, so no ECU reprogramming is normally required. After installation, any stored trouble codes should be cleared and the vehicle driven to allow the ECU to adapt to new sensor readings.

• No module reflashing typically necessary—plug-and-play electrical fit
• Clear diagnostic codes after installation to reset readiness monitors
• Perform a short drive cycle so the ECU can relearn sensor signals
• If codes persist, verify wiring, grounds, and connector seating

Who is this for: This ACAUTO 4-piece O2 sensor kit is aimed at DIY mechanics and professional technicians servicing mid-2000s Acura and Honda V6 vehicles who need a complete upstream/downstream replacement set. It’s a practical choice when you want OE-number compatibility (234-5010, 234-4355, 234-4368), pre-wired sensors for quick swaps, and parts sized to original harness layouts without modification.