Name: Radiator Cooling Thermo Fan Switch Thermostat - Hyosung GV125-S (Bobber 125 S EFi)
SKU: 17860HC8100JS-GV125S
Availability: InStock

Radiator Cooling Thermo Fan Switch Thermostat – Hyosung GV125-S (Bobber 125 S EFi)

Estimated delivery dates: May 9, 2026 - May 14, 2026

£25.99

💎 RADIATOR FAN SWITCH THERMOSTAT | GV125S EFi

Prevent catastrophic engine overheating with a reliable switch. This vital sensor sits in your radiator and tells the fan when to kick in. A failing switch is a common cause of stranded commuters—replace it with this OEM-spec unit to ensure your engine temperature stays under control.

✅ Function: Triggers the cooling fan at the exact factory temperature.
🛠️ Reliability: Prevents overheating and potential engine damage.
⚙️ Quality: Aftermarket unit meets or exceeds OEM specifications.
📦 Install: Simple swap during a coolant service.

💡 SPECIAL ORDER: Please allow extra time for delivery.

Description

Keeping your liquid-cooled EFi V-Twin running at the correct temperature is non-negotiable for life on the road. The original cooling fan switch thermostat is a critical component that can fail without warning. When it does, your engine overheats, leaving you stranded.

💎 Essential Engine Health & Reliability

A perfect fit that offers peace of mind, especially for daily commuters and garage mechanics.

Accurate Temp Sensor Triggers fan precisely.	Aftermarket Quality Matches OEM reliability.
Easy Diagnostics Simple 2-wire connector.	Fit & Forget Logic Built for long service intervals.

📜 Confirmed Fitment Guide

✅ FITS: Hyosung GV125S Bobber (V-Twin EFi model).
📅 YEARS: All S models from 2019+ onwards
❌ WILL NOT FIT: Older pre-2019 carbureted GV125s, GT125, GT250, or any 300cc models.

💡 MAINTENANCE ESSENTIAL:
When replacing this sensor, you should always flush your old coolant and replace it with fresh, high-quality engine coolant.

🔧 Install Tips

Cool Down First: Never open the cooling system when hot. Wait until the engine is cold to avoid serious burns.
Bleed the Air: After fitting and refilling the coolant, you must bleed all air out of the system. Check your manual or the forums for the correct procedure.

📧 NEED GUIDANCE? Email us or visit the HyoRiders Forums for detailed install tutorials and diagnostics help on cooling system issues.