Engine Cam Chain Tensioner Gasket – GT125 GV250 GT250 GV125
Maintain Timing Integrity: Essential seal when servicing noisy tensioners. This critical paper gasket must be replaced every time you access the CCT. Ensure silent running and stop oil seepage immediately.
- ✅ Function: Prevents oil pressure loss at the tensioner unit.
- 🛠️ Maintenance Must: Single-use item; always replace when removed.
- ⚙️ Compatibility: Available for both Early (Small Hole) & Late (Big Hole) versions.
- 📦 What’s Included: 1x CCT Gasket (Paper Type).
| BIG HOLE GASKET (Narrow Head Tensioner) | SMALL HOLE GASKET (Alien Head Tensioner) |
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Description
The Cam Chain Tensioner (CCT) gasket is a small but vital component in your Hyosung engine’s top end. It ensures correct oil pressure delivery to the tensioner mechanism, preventing the dreaded “engine rattle” caused by a loose cam chain. This paper-type gasket should be replaced any time the tensioner is removed for cleaning, replacement, or during a full engine service.
💎 Stop Engine Rattles with the Right Seal
Ensure perfect timing integrity and prevent oil leaks with the correct specification gasket.
| Oil Pressure Seal Ensures correct CCT function. |
OEM Reference Refs: 12837HP7600/H31321. |
| Single Use Item Always replace when removed. |
Perfect Fit Stops messy oil leaks instantly. |
📜 Confirmed Fitment Guide
✅ CRUISERS: GV125C & GV250 (1999-2018).
❌ WILL NOT FIT: GV125-S EFI (Liquid Cooled), GV300-S, or any 650cc models.
📸 Visual Guide: Which Gasket Do I Need?
Hyosung changed the tensioner design around 2006, and sometimes older bikes have newer parts fitted. Please use the images below to confirm which physical tensioner you have on your bike *before* ordering.
| If your bike uses a narrow head tensioner, then select the BIG HOLE gasket | If your bike uses an alien head tensioner, then select SMALL HOLE gasket |
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🔧 Install Tips
- Clean Surfaces: Ensure the mounting surface on the cylinder head is perfectly clean and dry before fitting the new gasket.
- Single Use: This paper gasket compresses when installed and cannot be re-used if removed again.
- Orientation: The gasket can only fit one way around, matching the oil passage holes correctly.
📧 FITMENT QUESTIONS? Email us a photo of your current tensioner!
For technical help or community opinions on noisy CCTs, visit the HyoRiders Forums.
Additional information
| Weight | 0.10 kg |
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| Dimensions | 10 × 10 × 0.3 cm |
| Tensioner Gasket Size | Big Hole (Type B), Small Hole (Older Type A |
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