Name: Exhaust Lambda O2 Oxygen Sensor Hyosung GT250RC GT650RC GV650 ST7 GV250 GD250
SKU: 37950H99D02JS-GT250RC
Availability: InStock

Exhaust Lambda O2 Oxygen Sensor Hyosung GT250RC GT650RC GV650 ST7 GV250 GD250

Estimated delivery dates: May 5, 2026 - May 6, 2026

£54.99

💎 EXHAUST OXYGEN O2 LAMBDA SENSOR | DELPHI EFI RANGE

Restore engine efficiency and eliminate warning lights. This vital O2 sensor ensures accurate fuel mapping for your EFi Hyosung, preventing rough running, misfires, and high fuel consumption. A precise fit for the Delphi injection systems.

✅ Fixes EFi Issues: Solves poor fueling and diagnostic trouble codes (DTCs).
🛠️ OEM Specification: Direct replacement for various Delphi-equipped models.
⚙️ Reliability: Ensures the correct air/fuel ratio for peak performance.
📦 Note: Sold individually (some V-Twins need two).

⚠️ CRITICAL FITMENT: This sensor is strictly for Delphi ECU models (2012+).
🛑 It has a specific size and connector that is NOT compatible with older Sentec, Daewoo, or Mitsubishi systems.
❌Electrical parts are non-returnable once shipped.

Description

The oxygen (lambda) sensor is a core component of your EFi system. When it fails due to heat, rust, or damage, your engine runs blind, leading to frustrating performance drops. Replacing it is essential maintenance. This quality replacement restores communication with your ECU, ensuring smoother power delivery and optimal efficiency for your GT, GV, ST7, or GD model.

💎 Precision Parts for Peak Performance

Essential hardware to keep your fuel injection system running flawlessly.

Accurate Readings Ensures perfect air/fuel mixture.	Stops Rough Running Smooths out idle and throttle response.
OEM Spec Connector Hassle-free plug-and-play installation.	Wide Fitment Covers many popular EFi Hyosung models.

📜 Confirmed Fitment Guide (Delphi EFi Only)

✅ FITS: GT250RC, GT650RC, GV650, ST7 (GV700i), GV250, GD250
📅 YEARS: Primarily 2012–2020 Delphi EFi systems.
❌ WILL NOT FIT: Carb models, Sentec ECUs, or older Mitsubishi/Daewoo systems. Check your connector size!

💡 ESSENTIAL INSTALLATION TIP:
Always use anti-seize compound on the threads of the new sensor. This is a critical step to prevent the sensor from welding itself to the exhaust pipe from heat and rust!

🔧 Fitting Tips

Verify Before Ordering: Due to Hyosung’s varied history with ECUs, please email us a photo if you are unsure of your fitment.
Order Quantity: V-twin bikes like the GT650R and GV650 use two sensors. Add two to your cart if needed.
Torque Correctly: Don’t overtighten the sensor into the exhaust bung; use the recommended torque spec to avoid thread damage.

📧 FITMENT QUESTIONS? Email us with your bike details. For technical help or community opinions, visit the HyoRiders Forums.