Stainless Steel Engine Inspection Plug (TDC Viewer Cap) – Hyosung GV125-S EFi (Aquila 125 S)
💎 STAINLESS TDC INSPECTION PLUG | GV125S BOBBER
Solve that rusty cap problem permanently. This CNC-machined stainless steel inspection plug replaces the weak OEM alloy viewer cap. It’s stronger, totally corrosion-proof, and designed to be removed cleanly every time you perform a valve clearance or timing check. A smart, long-term upgrade.
- ✅ Material: CNC-machined Stainless Steel (Brushed finish).
- 🛠️ Advantage: Won’t seize or rust like the factory steel plug.
- ⚙️ Install: Works with standard Allen key or socket (no special tool needed).
- 📦 What’s Included: 1x Plug & 1x New sealing washer.
📺🖼️ Check the video in the gallery!
Description
Regular valve clearance checks are essential maintenance for the GV125S Bobber. Unfortunately, the factory steel inspection plug is a common failure point—it rusts solid, making access difficult or impossible without damaging the engine cover threads. This stainless steel upgrade is the definitive modification for life on the road. It’s precision-made to fit perfectly and provides a sleek, technical visual look to your engine bay, saving you headaches during every service interval.
💎 Performance in the Details (CNC/Stainless)
The final touch your engine deserves. Stronger, sharper, and built to resist the UK weather.
| Zero Corrosion Stays clean and easy to remove. |
Multiple Tool Options No awkward OEM tool needed. |
| Engineered Fit Seals perfectly with the included washer. |
Brushed Finish Adds a subtle custom aesthetic. |
📜 Confirmed Fitment Guide
📅 YEARS: All S models from 2019+ onwards.
❌ WILL NOT FIT: Older pre-2019 carbureted GV125s, GT125, GT250, or any 300cc models.
Match this inspection plug with the stainless steel main crank plug for a full, clean engine bay aesthetic. View Stainless Crank Plug here.
🔧 Install Tips
- Use Anti-Seize: A light touch of anti-seize or clean oil on the threads is highly recommended to ease future maintenance.
- Torque Carefully: Tighten gently by hand until snug, then use the specific low torque setting from your service manual. Do not overtighten!
- See the Video: Check the video in the gallery for a quick visual guide!
📧 NEED GUIDANCE? Email us or visit the HyoRiders Forums for detailed install tutorials and torque specs.
Additional information
| Weight | 0.3 kg |
|---|---|
| Dimensions | 3 × 3 × 3 cm |
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