Name: NGK Uprated HT Lead Spark Plug Cap - Hyosung GD250N GD250R
SKU: 33415HC8100
Availability: InStock

NGK Uprated HT Lead Spark Plug Cap – Hyosung GD250N GD250R

Estimated delivery dates: May 16, 2026 - May 18, 2026

£34.99

🇯🇵 NGK UPRATED HT LEAD & CAP | STABLE EFI SPARK

Essential for consistent EFi performance. A degraded HT cap causes misfires, erratic idle, and that annoying bouncing RPM needle. This genuine NGK upgrade ensures consistent spark delivery, faster cold starts, and reliable engine performance.

✅ Genuine NGK Quality: Trusted Japanese brand, far more reliable than cheap alternatives.
🛠️ Ceramic Resistor: Reduces interference for smooth ignition and engine running.
⚙️ Weather Resistant: Special rubber liners prevent moisture ingress and electrical leaks.
📦 Plug & Play: Simple screw-fit installation; re-use your existing dust cover.

💡 DIAGNOSTIC WIN: If your RPM needle bounces when warm, a failing HT cap is often the culprit. This upgrade is the definitive fix.

Description

Spark plugs are as vital as your tyres, and a quality HT lead and cap are the final link in the chain. As your GD250 lives its life on the road, the original insulating material cracks and fails over time. This genuine NGK upgrade provides low resistance, improving sparking energy for better engine starts and performance, resisting vibration and heat for a long, reliable life.

💎 Performance with the Reliability!

Premium ceramic materials resist deterioration and maintain consistent resistance under load, which is critical for stable EFi coils.

Faster Cold Starts Low resistance improves sparking energy.	Stable EFi System Ceramic resistor reduces EMI.
Weather Resistant Sealed liners prevent moisture ingress.	Tough Construction Heat-pressed for vibration resistance.

📜 Confirmed Fitment Guide (GD250 Only)

✅ FITS: Hyosung EXIV GD250N (Naked)
✅ FITS: Hyosung GD250R (Sport)

Reference OEM Part Numbers: 33415HC8100, 33410H98A00

💡 ULTIMATE SPARK PACKAGE:
For maximum performance and all-weather reliability, pair this cap with fresh NGK LASER Spark Plugs.

🔧 Installation Tips & Advice

Reuse Dust Cover: Keep and reuse your old dust cover to fully protect the connection from dirt and moisture ingress.
Snug Fit: Ensure a snug fit on the spark plug terminal for optimal spark delivery.
Inspect Cable: Uncrew your old lead, cut a fresh 5mm off the end if needed, and screw the new cap on tightly to ensure a solid connection.

📧 FITMENT QUESTIONS? Email us with your model details. For community guides on EFi diagnostics, visit the HyoRiders Forums.