Oxygen Sensor Front Upstream for Mazda 6 2.5L 2007-2013 L509-18-8G1A L509188G1B
The IWOKPHD Oxygen Sensor Front Upstream for Mazda 6 2.5L (2007-2013) is a direct replacement sensor designed for the front upstream (pre-cat) position. Built to match Mazda’s 2.5L L4 engine, it helps the engine control module read accurate exhaust oxygen levels, supporting proper air-fuel balance, smoother idling, and cleaner emissions. This sensor uses a magnetic induction sensing element with a built-in heating function to provide faster warm-up and reliable readings across driving conditions.
Benefits & Tips
- Improved fuel economy and reduced emissions by delivering precise O2 readings to the ECU for optimal fueling.
- Reliable performance with fast warm-up thanks to the integrated heating type, helping the engine reach operating temperature quickly.
- Compatibility confidence: cross-checked part numbers include L509-18-8G1A, L509188G1, L509188G1B, L509-18-8G1A/B, LZA07-MD16 and related equivalents to fit Mazda 6 2007–2013 2.5L models.
Product specifications
- Brand Name: IWOKPHD
- Part Numbers / OEM Numbers: L509-18-8G1A, L509188G1, L509188G1B, L509-18-8G1, L509-18-8G1B, L509188G1A, LZA07-MD16, 7481803, 81803, 90403, 250-25090, 25025090, L33D-18-8G1, L33D188G1, L33D-18-8G1C, L33D188G1C
- Sensor Type: Magnetic Induction
- Heating Type: Heating
- Location: Front Upstream (Pre-cat)
- Application / Engine: Mazda 6 2.5L MZR L5-VE 2488 cc, 4-cylinder, 125 kW
- Fitment: Mazda 6 Estate (GH) 2.5 MZR L5-VE 2488 125 4 Estate 2008-2013; Mazda 6 Hatchback (GH) 2.5 MZR L5-VE 2488 125 4 Hatchback 2007-2013; Mazda 6 Saloon (GH) 2.5 MZR L5-VE 2488 125 4 Saloon 2007-2013
- Origin: Mainland China
- Compatibility Note: Please check the picture and the part number carefully to ensure 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 to confirm before order. 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.
- Compatibility Reference: A wide range of cross-checked numbers to maximize fit options.
Package includes:
- 1 piece oxygen sensor
Warnings / Reminders
- Please verify the part number and compatibility with your vehicle before purchase. Shipments can be delayed by weather or seasonal factors.
Warranty and service: 2 years warranty for replacement. Any questions will be replied to within 24 hours, excluding weekends and holidays. All items are dispatched within 2 working days after payment is confirmed. Ensure your shipping address is correct. Import duties and charges are not included in the item price or shipping; these are the buyer’s responsibility. If the part is damaged or faulty in transit, provide problem description or photos so our Customer Service and Technical Department can assist promptly.
All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.
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