Cylinder Head Bolt (6x85) for CSC Go., GY6 50cc (139QMB) Scooters

Cylinder Head Bolt for CSC Go. and GY6 50cc Scooters

This 6x85 cylinder head bolt is made for CSC Go. scooters that run the GY6 50cc (139QMB) engine. It holds the cylinder head firmly to the engine block. As with other GY6 50cc scooter parts, a secure fit here helps keep the engine running well and guards against problems such as low compression or valve damage.

When to Replace It

Consider swapping this bolt if the engine starts ticking, compression drops, or valves burn. Those signs usually mean the head needs attention, and a correct fit matters for proper engine operation.

Specifications

• Size: 6x85
• Position: Cylinder head
• Fits: GY6 50cc (139QMB); CSC Go Max

Fitment

Compatible with:

• GY6 50cc (139QMB)
• CSC Go Max

Installation location: item #6 on the cylinder head & camshaft diagram for the GY6 50cc (139QMB), CSC Go; item #6 on the cylinder head camshaft diagram for the CSC Go Max.

Browse related items: GY6 50cc Scooter Parts (139QMB) · GY6 Scooter Parts · Scooter Cylinder Heads & Valves · Scooter Bolts, Screws & Hardware · Scooter Parts