A-Premium O2 Oxygen Sensor for Mitsubishi Lancer & Outlander — Heated 4‑Wire Direct Fit (930mm)

The A-Premium O2 Oxygen Sensor is a direct-fit, heated replacement oxygen sensor engineered to restore accurate air-fuel monitoring on compatible Mitsubishi Lancer and Outlander models.

If your vehicle shows a check engine light related to oxygen sensor performance, fuel economy has dropped, or emissions testing failed, a properly matched replacement sensor can bring the engine management system back into range. This A-Premium sensor is offered in several fitment positions (upstream, downstream, center) for specific Mitsubishi Lancer and Outlander model years and engine types, and it includes a four-wire heated design and threaded mounting for straightforward installation.

Which Mitsubishi models and years does this A-Premium O2 sensor fit?

The sensor is provided in multiple fitment configurations to match different banks and sensor positions across Lancer and Outlander model ranges. Fitment covers various 2.0L and 2.4L engines, including naturally aspirated and turbocharged variants, with model-year differences noted between California and non-California emissions packages.

• Compatible placements: center (B1S2), downstream (B1S2/B1S3), and upstream (B1S1) depending on part number.
• Covered vehicles include Mitsubishi Lancer (2008–2011) and Outlander/Outlander Sport (2008–2020) in specified engine configurations.
• Confirm exact fit using the seller’s vehicle lookup or OEM reference numbers before purchase.

How do I confirm this sensor matches my vehicle?

Because multiple sensor locations and engine variants exist, verify fitment carefully. Use the vehicle compatibility tool provided by the retailer and compare OEM reference numbers to your factory part to avoid returns.

• Check the seller’s "Amazon Confirmed Fit" or equivalent fitment checker.
• Compare listed reference numbers (250-24751, 213-4755, 25024751, 2134755) with your current sensor.
• Note differences for California emissions (Calif-ESV) vs non-California models and turbo vs naturally aspirated engines.

What are the technical features and installation details?

This A-Premium oxygen sensor is a heated, four-wire threaded unit designed for direct installation into the vehicle’s exhaust system. The 930 mm overall cable length and female connector help simplify routing and reuse of factory harnesses in most installations.

• Wire quantity: 4 (heated sensor circuitry + signal/ground lines).
• Overall cable length: 930 mm to reach factory harness locations.
• Mounting: threaded sensor body for direct replacement of OEM part.
• Connector type: female to mate with factory wiring harnesses.

What should I expect after installing this replacement sensor?

When installed correctly, a new oxygen sensor helps the engine control unit receive accurate exhaust oxygen readings, which supports better fuel trim decisions and smoother engine operation compared to a failing sensor. It won’t cure unrelated mechanical or emissions-system issues, so ensure related components are functioning properly.

• May clear oxygen-sensor-related diagnostic trouble codes once the ECU adapts.
• Can improve fuel trim stability versus a degraded sensor but won’t fix unrelated fuel or ignition faults.
• Use proper torque and anti-seize practices when threading to avoid damage and ensure sealing.

Who is this for: This A-Premium oxygen sensor is intended for DIYers and professional mechanics replacing a faulty or aging O2 sensor on compatible Mitsubishi Lancer or Outlander models. It suits owners who need a direct-fit, heated replacement that matches factory connector styles and provides the appropriate wire length for typical exhaust routing. Always verify vehicle match with the provided reference numbers and fitment tool before purchase to ensure correct position and emissions specification.