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Stainless Steel Engine TDC Inspection Plug [Flywheel Viewer Cap] – Various Hyosung Models

Estimated delivery dates: Aug 13, 2026 - Aug 14, 2026

£7.99

💎 STAINLESS ENGINE TDC PLUG // CORROSION-PROOF FLYWHEEL CAP

Say goodbye to stuck, rusty OEM plugs. This CNC-machined stainless steel upgrade replaces the soft factory inspection cover to handle salty winter commutes on local roads.

  • Quality // Built from robust 100% solid stainless steel that will not seize up over winter.
  • Performance // Precision CNC cut threads allow perfect, effortless engagement into the stator case.
  • Reliability // Multi-tool drive profile eliminates rounded heads by fitting sockets, hex bits, or Allen keys.
  • Installation // Straightforward swap that includes a brand new leak-free sealing washer in the pack.
💡 MAINTENANCE WIN: Unlike the original factory part, this configuration won’t round off when the engine casing is hot. It makes vital valve clearance and ignition timing inspection tasks much smoother on classic carburetor and early fuel-injected engines.
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Description

If you have ever tried to complete routine servicing on an older machine, you know the original alloy engine caps love to lock up tight and round off. This stainless steel top dead centre inspection plug provides a permanent solution for these highly useful engines. It updates your stator casing with a clean, low-profile finish while significantly simplifying mechanical work by letting you use common garage tools rather than proprietary bits.

💎 MAINTENANCE SPECIFICATIONS

Solid StainlessWon’t rust, chip, or flake away over long-term use. Universal DriveEnables easy access via conventional hex keys or sockets.
Leak-Free SealSupplied with a tailored washer for a secure interface. Precision CNCLower profile shape that sits beautifully against the stator housing.

📜 Confirmed Fitment Guide

Classic Generation Engine Group: Direct fitment verified for the 2001 to 2017 model lines listed below.

  • V-Twin Cruiser & Sport: GT125, GT125R, GT250, GT250R, GT650, GT650R, GV125, GV250, GV650 Aquila, and ST7.
  • Single Cylinder & Naked: RT125, RX125, XRX125, GD250N, GD250R, and TE450S.
❌ WILL NOT FIT THESE MOTORCYCLES:

  • Hyosung GV125S / GV300S Aquila Bobber: Modern post-2018 EFi power plants utilize completely separate crankcase dimension standards.
💡 RECOMMENDED PAIRING: Need the larger matching plug located at the center of the casing? Check out our matching Stainless Steel Flywheel Crank Plug to refresh the whole set. Browse Engine Parts here.

🔧 Install Tips

  • Hand Start Utility: Always thread the cap in gently by hand first to make certain the CNC threads align correctly before using your drive tools.
  • Thermal Safety: For the most consistent torque seal, let your engine housing cool down entirely before swapping the components over.
  • Manufacturer Reference Cross-Match: Directly matches original factory replacement number 09247H12102.
📧 QUESTIONS? Not entirely sure about this part matching your casing? Email us with your model questions or if you need maintenance advice from club peers, head straight to the forums.

Additional information

Weight 0.5 kg
Dimensions 20 × 20 × 3 cm

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