A-Premium Downstream O2 Oxygen Sensor for Honda & Acura — Heated Threaded 4-Blade Connector (Rear/Front Fit)

A-Premium Downstream O2 Oxygen Sensor is a direct-fit heated replacement sensor engineered to restore accurate downstream exhaust readings for compatible Honda and Acura engines.

When your vehicle’s downstream oxygen sensor fails or triggers a check-engine light, the engine control unit can no longer confirm catalytic converter performance or accurately trim fuel for emissions. This A-Premium sensor is a threaded, heated, 4-blade connector unit supplied in a box and built to match OEM fitment numbers such as 36542-R70-A01 and 250-24785. It’s offered in multiple downstream positions (rear/front) and covers a broad list of Acura and Honda V6 and L4 models across several model years so you can select the correct location and fit for your repair.

Which Honda and Acura models will this downstream oxygen sensor fit?

This sensor fits a wide range of Acura and Honda vehicles depending on the downstream position (rear or front). Fitments include many MDX, RDX, RL, TL, TLX, ZDX and several Honda Accord, Crosstour, Odyssey, Pilot, Ridgeline, Passport and more. Verify the exact downstream location needed for your year and engine to ensure compatibility.

• Acura MDX, RDX, RL, TL, TLX, ZDX model years listed in the product features
• Honda Accord, Crosstour, Odyssey, Pilot, Ridgeline, Passport with specified V6 and L4 engines
• Multiple fitment variations: downstream rear, downstream front or rear depending on application

How is this A-Premium sensor built and what are the key specifications?

The unit is a heated oxygen sensor with a threaded mounting and a male 4-blade connector designed to match OEM electrical interfaces. It ships as a single sensor in a box and includes the common reference numbers used by dealers and aftermarket parts catalogs to help confirm the correct part.

• Sensor type: heated oxygen sensor for downstream installation
• Terminal quantity: 4-blade male connector for OEM wiring compatibility
• Mounting: threaded body for direct-fit installation
• Package: 1x oxygen sensor supplied in retail box for protection and storage

When should I replace the downstream oxygen sensor and what symptoms indicate failure?

Replace the downstream sensor if you see a check-engine light related to O2 or catalytic efficiency codes, or if emissions testing fails. Other indicators include poor fuel economy, rough idle, or unresolved engine light codes after replacing upstream sensors; the downstream sensor helps the vehicle confirm converter performance.

• Illuminated check-engine light or CEL codes for O2 or catalyst efficiency
• Failed emissions test or inconsistent fuel-trim readings
• Age and mileage — typical service life can vary, so inspect at regular intervals

Who is this replacement sensor best suited for?

This A-Premium downstream oxygen sensor is ideal for DIY mechanics, independent repair shops, and fleet owners who need a cost-effective, direct-fit heated sensor that matches OEM-style connectors and mounting. It's best when you know the required downstream position and the exact model/year/engine of your Acura or Honda—use the reference numbers and fitment list to confirm compatibility before ordering.