Name: Headlight or Fuel Pump Relay - Hyosung GV125S GV300S Bobber EFi Aquila
SKU: 38740HF8400JS
Availability: InStock

Headlight or Fuel Pump Relay – Hyosung GV125S GV300S Bobber EFi Aquila

Estimated delivery dates: May 14, 2026 - May 15, 2026

£14.99

💎 HEADLIGHT & FUEL PUMP RELAY | FIX DEAD ELECTRICS

Problem Solved: Restore power to dead headlights or a non-working fuel pump instantly. This high-quality 4-pin relay is a direct-fit aftermarket replacement for common electrical failures on your EFI Bobber. Simple plug-and-play fix.

✅ Function: Powers critical systems (Fuel pump, Headlights, etc.).
🛠️ Installation: Direct swap—no special tools needed.
⚙️ Quality: Sourced from Korea or Japan (Reliable, durable units).
📦 What’s Included: 1x ( ONE) Relay (Black or Blue version).

💡 MAINTENANCE TIP: EFI bikes rely heavily on relays. We always recommend replacing a faulty fuel pump *and* the relay together for the best results and total reliability.

Description

If your GV125-S or GV300S suddenly won’t start (no fuel pump noise) or your headlights are dead, a failed relay is the most common and easiest fix. These components work hard, especially as DRLs (Daytime Running Lights) are standard in many markets. This quality aftermarket unit ensures reliable power delivery, keeping your life on the road safe and operational.

💎 Reliable Electrics for Peace of Mind

A straightforward fix that restores essential functionality and keeps your modern EFI Hyosung running perfectly.

Fast Fix Plug and play installation.	OEM Reference Matches 38740HF8400.
Multi-Use Works for fuel pump, lights, etc.	Trusted Quality Made in Korea or Japan.

📜 Confirmed Fitment Guide

✅ FITS: GV125-S Aquila 125 S (2019+ including EVO models).
✅ FITS: GV300-S Aquila 300 (2019+ including SS/Supreme models).
⚙️ SYSTEMS: Fuel Pump relay, Headlight relay, and other 4-pin applications on these specific models.

💡 RECOMMENDED PAIRING:
If your fuel pump failed, check the [Fuel Filter] too! A clogged filter puts too much strain on the pump and the relay, causing early failure.

🔧 Install Tips

Locate First: Check your owner’s manual or forum guides to locate the correct relay box(es) before you start.
Simple Swap: Simply pull the old relay out and push the new one in. No tools required!
Quantity Check: You receive one relay only. Order multiple if you plan to replace several relays on your bike.

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