A-Premium Downstream O2 Oxygen Sensor 2-Pack for Honda & Acura V6 — Heated 4-Wire, 560mm Harness

A-Premium's 2-pack downstream oxygen sensors are direct-fit heated O2 sensors designed to replace the factory downstream (post-catalyst) sensors on select Honda and Acura V6 vehicles.

These replacement downstream sensors restore accurate exhaust monitoring after the catalytic converter, helping your vehicle’s engine control module read exhaust oxygen levels correctly. The set includes two threaded, heated sensors with four-wire connectors and 560 mm harness length, packaged in protective boxes. Before ordering, confirm fitment using your vehicle details and the reference numbers provided to avoid ordering the wrong upstream sensor.

How do these downstream O2 sensors differ from upstream sensors?

Downstream sensors are mounted after the catalytic converter and primarily monitor converter efficiency rather than active air-fuel feedback. They are not interchangeable with upstream (pre-catalyst) sensors, which directly influence fuel trim. Installing the correct downstream sensor keeps your vehicle’s emissions diagnostics operating properly.

• Designed specifically for downstream (post-catalyst) placement
• Heated sensor element for faster warm-up and stable readings
• Threaded mount for direct-fit replacement
• Not compatible with upstream sensor positions

Will this 2-pack fit my Honda or Acura model?

This kit fits many V6 models from Honda and Acura across specific years; compatibility depends on engine size and model year. Use the vehicle selector on the product page and compare the listed reference numbers to your factory part to be certain. If you’re unsure, contact the seller with your VIN for confirmation.

• Compatible with Acura MDX, RL, TL, TSX models (selected years and V6 displacements)
• Compatible with Honda Accord, Crosstour, Odyssey, Pilot, Ridgeline V6 models (selected years)
• Reference numbers: 36542-R70-A01, 36542R70A01, 250-24785, 25024785, 2344461
• Enter vehicle info on the listing and review special notes before purchase

What are the technical specifications and connector details?

Each sensor in this pair features a heated design with a four-wire configuration and a female terminal interface that mates with the factory male connector. The overall harness length measures 560 mm, and the sensors come with threaded mounting to match original equipment. Packaging includes two sensors securely boxed for transport.

• Wire quantity: 4 (heated sensor wiring)
• Overall cable length: 560 mm for proper routing
• Terminal quantity: 4-blade female terminals, male connector mating
• Mounting: threaded sensor body for OEM-style installation

How do I install these downstream oxygen sensors?

Installation typically requires lifting the vehicle and accessing the exhaust downstream of the catalytic converter. Use an appropriate oxygen sensor socket and anti-seize on threads if desired; ensure electrical connectors are fully seated and routed away from heat sources. If you lack tools or experience, a professional mechanic can complete the swap quickly.

• Tools: oxygen sensor socket, ratchet, penetrating oil, jack and stands
• Tip: compare the connector and thread pitch with the old sensor before removal
• Apply anti-seize sparingly to threads if not pre-coated
• Verify no exhaust leaks after installation and clear any stored codes

Who is this for: This A-Premium 2-pack is intended for owners and technicians who need direct-fit downstream O2 replacements for specified Honda and Acura V6 vehicles. It’s suitable for routine maintenance, emissions repairs, and for those replacing malfunctioning post-catalyst sensors—provided you confirm vehicle compatibility and reference numbers before purchasing.