Rear Downstream Lambda Oxygen Sensor for Ford C-Max, Volvo C30 S40 V50
Introducing the Rear Downstream Lambda Oxygen Sensor for Ford C-Max, Volvo C30 S40 V50 — a precise downstream O2 sensor designed to keep your exhaust readings accurate and your engine running clean. This replacement sensor sits after the catalytic converter, helping the engine ECU fine-tune fuel delivery and emissions control. Built as a reliable, OEM-style option, it supports Ford C-Max and Focus as well as Volvo C30, S40, and V50 applications, ensuring your vehicle maintains optimal air-fuel ratio and reduces unburned fuel in the exhaust.
The sensor features a robust piezoelectric sensing element with a heating type design to reach operating temperature quickly. Faster warm-up means quicker closed-loop control, improved fuel efficiency, smoother idle, and reduced catalyst stress over time. With a range of compatible part numbers, this sensor is engineered to fit a variety of Ford and Volvo downstream O2 sensor installations, providing a dependable repair option when the original part ages or fails.
Note: Please check the picture and the part number carefully to make sure that you bought the right part for your car. If you cannot confirm which item fits your car, please send the Part Number or the Original product photos to us for confirmation before ordering. The only way to be 100% sure the part will fit your vehicle is to check your original part. We will check for you and reply within 24 hours.
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Benefits & Tips
- Restores accurate oxygen readings in the exhaust after the catalytic converter, helping the ECU optimize fuel trim for better efficiency and lower emissions.
- Supports reliable performance during tuning or maintenance by ensuring the downstream sensor provides correct feedback for emissions control systems.
- Easy to source as a ready-to-install replacement with multiple compatible part numbers, reducing vehicle downtime during repairs.
Product specifications
- Brand: IWOKPHD
- Sensor Type: Piezoelectric
- Heating Type: Heating Type
- Part Numbers / OEM references: 3M51-9G444-AA, 3M51-9G444-AB, 3M519G444AA, 3M519G444AB, 3M51-9G444-DC, 3M51 9G444 DC, 3M519G444DC, 0258006607, 0258006608, 0 258 006 607, 0 258 006 608
- Compatibility: Fits Ford C-Max and Focus; Volvo C30, S40, V50
- Origin: Mainland China
- Warranty: 2 years
- Category: Rear Downstream Lambda Oxygen Sensor
Package includes:
- 1 pcs
Warnings/Reminders
- Please verify the exact part number and vehicle compatibility before purchase to ensure proper fit.
- The most reliable way to confirm fit is to compare with your original part; if in doubt, provide the Part Number or original photos for confirmation (response within 24 hours).