Intake Pipe O-RING (Inlet Boot Seals) x2 – GV125 GT125 RX125 GV250 GT250 Hyosung

Description

Between your cylinder head faces and the rubber intake pipe (aka inlet manifold), also known across the USA as intake neck boots, sits a highly crucial rubber ring seal. This small component ensures a 100% airtight vacuum connection for proper engine and carburetor / EFi throttle body performance. As your bike handles regular touring, daily riding, and long road trips, the rubber joints under the fuel bowls are exposed to intense combustion heat. Over time, these seals lose their elasticity, harden completely, and crack apart much like uncooked pasta. Even on machines as young as 5 years old, flattened rubber permits unmetered air to leak past, risking engine damage. Sourcing a fresh pair of Hyosung intake O-rings is the cheapest insurance to keep your air signal clean across your latest restoration project.

When these rubber ring seals become worn or squashed flat, symptoms include temperamental cold starting, a fluctuating idle speed, and severe lean fuel mixtures that create massive stress on spark plugs and valves. This aftermarket pack delivers an excellent, cost-effective replacement option to seal the link lines flat against the cylinder head ports. Discarding the dried-out original pieces locks out dirt, dust, and winter moisture, ensuring your V-twin or single-cylinder thumper runs smoothly with a perfectly steady rev return on everyday journeys.

💎 INDUCTION MANIFOLD HYOSUNG INTAKE O-RINGS SPECIFICATIONS

📜 Confirmed Model Fitment

🔧 Installation Advice

Maintaining your intake pipe O-rings is a straightforward and highly cost-effective path to keep your motor running smoothly. Follow these quick workbench tips:

• Thoroughly Scrub the Casing Join Faces: Ensure that the cylinder head aluminum faces and the plastic intake manifold boot profiles are perfectly clean of old baked-on rubber debris, grime, or sealant varnish before dropping the new rings home.
• Apply an Incredibly Light Film of Lube: Wipe the seals with a clean cloth. A tiny, thin smear of silicone grease over the rubber can help the new O-ring seat perfectly flat inside its circular recess without pinching or twisting out of line during manifold assembly.
• Avoid Over-Tightening Your Flange Bolts: Snug the manifold bracket bolts down evenly in small increments using hand tools. Over-tightening with excessive brute force will warp the neck boot ears, ruining your new seal and causing a fresh air leak instantly.