Oxygen Sensor For Mazda 6 2.5L MZR L5-VE Upstream Replacement New Part L509-18-8G1A
Main description
The Mazda 6 2.5L Upstream O2 Oxygen Sensor is a brand-new replacement part designed for Mazda 6 GH family vehicles equipped with the 2.5L MZR engine (L5-VE). This upstream oxygen sensor measures the exhaust oxygen content in real time and feeds data to the engine control unit to optimize the air–fuel ratio. With accurate sensing, your engine maintains efficient combustion, lowers emissions, and preserves steady performance across varying driving conditions. This is a direct-fit replacement that matches OEM specifications for 2007–2013 Mazda 6 models in Estate, Hatchback, and Saloon configurations, ensuring reliable operation without the guesswork of incompatible parts.
Benefits & Tips
- Restore optimal fuel efficiency and smooth idle by replacing a failing upstream O2 sensor with a genuine new unit.
- Designed for Mazda 6 GH 2.5L MZR L5-VE engines, delivering OEM-like performance and durable operation in exhaust environments.
- Tip: After installation, perform a brief drive cycle to allow the ECU to relearn the correct oxygen sensor readings for best long-term results.
Product specifications
- Condition: New
- OEM / part numbers: L509-18-8G1A (also listed as L509-18-8G1, L509188G1, L509188G1B, L509-18-8G1B, L509188G1A, LZA07-MD16, 7481803, 81803, 90403, 250-25090, 25025090)
- Sensor type: Upstream O2 sensor (Air-Fuel Ratio Sensor)
- Technology: Magnetic Induction; Heating Type
- Measuring range: L509-18-8G1A and related codes listed in OEM numbers
- Engine compatibility: Mazda 6 2.5L MZR (L5-VE)
- Vehicle fitment: Mazda 6 Estate (GH), Mazda 6 Hatchback (GH), Mazda 6 Saloon (GH) — 2007–2013
- Displacement (cc): 2488
- Power: 125 kW
- Origin: Mainland China
- Warranty: 2-year Replacement Warranty
All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.
Package includes:
- 1 x Upstream O2 Oxygen Sensor L509-18-8G1A (New)
Warnings/Reminders
Before ordering, please check product pictures, accessories and part numbers. If you are unsure, please send us a product picture or part number before ordering. In order to avoid wrong orders, please read the purchase guide carefully. Thank you!
Language support: Not specified in the product data.
Trust statement: Since 2002, intercyprus.com has earned trust for reliable auto parts and service.