Name: Engine Valve Stem Guide Oil Seal (x4 Seals) - Various Hyosung Models
SKU: 09289H04003
Availability: InStock

Engine Valve Stem Guide Oil Seal (x4 Seals) – Various Hyosung Models

Estimated delivery dates: Mar 24, 2026 - Mar 31, 2026

Original price was: £30.00.Current price is: £24.99.

💎 VALVE STEM GUIDE OIL SEAL KIT (X4) | STOP ENGINE SMOKE

Stop that smoky exhaust and high oil consumption. These critical internal seals prevent oil from leaking past the valves into the combustion chamber. An essential kit for all 125cc, 250cc & 650cc engine rebuilds.

✅ Engine Health: Eliminates smoke on deceleration and oil-fouled spark plugs.
🛠️ Comprehensive Kit: Includes 4x seals per pack. Order “x2” for a full V-Twin engine (8 seals total).
⚙️ Multi-Fitment: Fits most single and V-Twin legacy engines up to 2021 (See list below).
📦 OEM Spec: High-quality replacements matching OEM# 09289H04002.

❗ DIAGNOSTIC TIP: Smoke when rolling *off* the throttle usually means worn valve seals. This is advanced engine work—use a professional mechanic or service manual to install.
⌚ This is a special order, please allow extra time for delivery!

Description

Over time, heat cycles harden the original valve stem oil seals, preventing them from doing their job properly. This allows engine oil to slip down the valve guides and burn in the exhaust, creating smoke and reducing engine performance. This 4-pack provides the high-quality seals needed to restore engine health. When you are investing significant time in an engine strip-down, fitting quality seals is vital to guarantee your hard work pays off.

💎 Performance & Reliability: The Internal Fix

Fixing hidden engine issues prevents performance loss and ensures compliance with EU emissions/MOT tests.

Stops Smoking Engine Eliminates oil burn that can fail inspections.	Reduces Oil Usage Keeps oil in the sump, not the exhaust pipe.
Full Head Kit (x4) Enough seals for one complete cylinder head assembly.	Wide Compatibility Fits most 125, 250, and 650 V-Twins/Singles.

📜 Confirmed Fitment Guide

✅ FITS (Covers Most Legacy Models Up To 2017):
• GT125/R/RC, GT250/R, GT650/R, GV125C, GV250, GV650, ST7, RT/RX125, GD250N/R❌ WILL NOT FIT: GV125S EFi (2019+), GV300S or GV250DRA (2020+).

💡 RECOMMENDED PAIRING (125cc/250cc):
While the head is off, consider refreshing your camshaft bearings too. Worn bearings cause rattle and uneven wear on your new seals. View Cam Bearings here.

🔧 Install Tips

Buy x2 Packs: Remember, you need 8 seals total for a full V-Twin engine (4 per head). Order 2 packs!
Oil Level Check: Always check your oil level via the sight glass with the bike perfectly upright (get a friend to help!) for accurate readings.
Professional Job: No instructions included. This is for experienced mechanics only.

📧 FITMENT QUESTIONS? Email us with your model details. For expert advice and community help on complex engine rebuilds, visit the HyoRiders Forums.

OEM Reference Part No: 09289H04002 / 09289H04003