Heated Oxygen Sensor For Volvo S40 And Ford Focus Four-Wire Replacement Part 3M51-9F472-AB
Main Description
Meet the Volvo S40, Ford Focus Heated Oxygen Sensor 3M51-9F472-AB from WEIDA AUTO PARTS — a precise, four‑wire replacement designed to restore optimal exhaust sensing and engine management. This heated O2 sensor uses a reliable piezoelectric sensing element to deliver accurate readings quickly, even from a cold start, helping your ECU calibrate air–fuel mixtures efficiently. By speeding up warm-up and stabilizing sensor signals, it supports smoother idling, improved fuel economy, and lower emissions over time.
Designed for direct compatibility, this sensor covers Volvo S40, S40 V50, C30 and Ford models including Focus, C-Max, and Fiesta. OEM number 3M51-9F472-AB ensures a precise fit and seamless integration with your vehicle’s exhaust system. Originating in Mainland China, it’s manufactured to meet consistent quality standards so you can trust it to perform reliably mile after mile.
All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.
At intercyprus.com since 2002 — trusted for quality and reliability.
Benefits & Tips
- Fast heating and stable readings reduce cold-start roughness and help the engine reach optimal efficiency sooner.
- Accurate oxygen measurements improve ECU fuel trimming, contributing to lower emissions and better fuel economy in daily driving.
- Easy direct-fit replacement for vehicles listed (Volvo S40, S40 V50, C30, Ford Focus, C-Max, Fiesta) with OEM reference 3M51-9F472-AB—no guesswork for installation.
Product Specifications
- Brand: WEIDA AUTO PARTS
- Sensor Type: Piezoelectric
- Heating Type: Heated (4-wire)
- Wire Count: 4 wires
- OEM / Part No.: 3M51-9F472-AB
- Measuring Range: Compatible with Volvo S40, S40 V50, C30, Ford Focus, C-Max, Fiesta
- Origin: Mainland China
- Repeatability: 90
- Resolution: Oxygen Sensor
- Hysteresis: 3M51-9F472-AB
Package includes:
- 1 x Heated Oxygen Sensor (O2 sensor) – 3M51-9F472-AB
Warnings / Reminders
- Disconnect the battery and allow the exhaust system to cool before installation.
- Ensure proper torque and alignment during replacement to avoid exhaust leaks or sensor damage.
- This part is intended as a direct replacement for compatible models listed; verify OEM number before purchase.
- Professional installation is recommended if you are not experienced with exhaust-sensor replacements.
Providing quality and trusted service since 2002 at intercyprus.com.