Wideband O2 Sensor for Audi A4 A8 Quattro TT LSU 4.2 5 Wire
Main Description
Meet the WEIDA Auto Parts O2 Sensor for Audi A4 A8 Quattro TT — a precise wideband LSU 4.2 sensor designed to replace your stock oxygen sensor with higher accuracy and faster response. This 5-wire heated sensor ensures quick warm-up, reducing cold-start enrichment and helping the ECU dial in the correct air-fuel ratio across a wide range of operating conditions. Compatible with A4, A8 Quattro TT, Touareg, Passat, Golf, and Beetle models, it uses OEM specification 0258007090 for a reliable fit and consistent signal.
With its wideband capability, this sensor provides a more precise measurement of oxygen in the exhaust than traditional narrowband sensors, enabling better fuel economy, lower emissions, and improved performance when tuning or after repairing the intake/exhaust systems. The robust design from WEIDA Auto Parts is built to withstand automotive environments and deliver stable signals over long service intervals.
Benefits & Tips
- Benefit: Improves fuel efficiency and emissions by delivering accurate air-fuel readings across multiple engine loads.
- Tip: When replacing, ensure the mounting threads and gasket are clean and torque to the manufacturer’s spec to seal correctly and prevent leaks.
- Tip: Use together with a compatible ECU or tuning tool to maximize wideband sensor benefits during performance upgrades or after drivetrain repairs.
Product Specifications
- Brand: WEIDA AUTO PARTS
- OEM No.: 0258007090
- Sensor Type: Magnetic Induction
- Measuring Range: For A4 A8 Quattro TT; For Touareg; Passat; Golf; Beetle
- Sensor: Wideband LSU 4.2
- Wiring: 5 Wire
- Heating: Yes
- Origin: Mainland China
- Hysteresis: 2345117 0258007090
- Repeatability: 234-5117 0 258 007 090
- Resolution: Not specified
Package Includes:
- 1 x O2 Sensor (Wideband LSU 4.2, 5-Wire, Heated)
- Installation hardware may vary by vehicle and is not included if not listed
Warnings / Reminders
- Install by a qualified technician. Ensure the vehicle is cool before replacing the sensor. Disconnect the battery if required by your vehicle’s service procedures. Follow torque specifications for the sensor outlet to avoid thread damage.
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