GY6-Case 67mm Cylinder Head & Base Gasket Set

67mm Cylinder Head and Base Gasket Set for GY6 Engines

This gasket set is designed specifically for GY6 engines, particularly those utilizing a B-Case configuration. It features a 67mm inner diameter, making it ideal for modified setups requiring a big bore kit. As one of the critical GY6 scooter parts, it ensures a complete seal for effective engine performance and longevity. The materials are engineered to withstand the higher temperatures and pressures typical in modified engines.

Construction Details

This set includes a cylinder head gasket and a cylinder base gasket, both precision-machined to fit the 57mm stud spacing of GY6 B-Case blocks. The composite materials provide excellent thermal resilience, important for the demands of high-performance riding. This ensures that the gaskets maintain their integrity under stress, preventing leaks and ensuring reliable operation.

Compatibility and Installation

Designed exclusively for 4-stroke GY6 engines using a B-Case layout, it is important to check the stud spacing before installation. Standard GY6 engines use a 54mm spacing, so measuring the center-to-center distance of the studs is necessary to confirm compatibility. This gasket set is perfect for those looking to upgrade to a 67mm big bore configuration without complications.

Specifications

• Gasket Inner Diameter: 67mm
• Cylinder Stud Spacing: 57mm center-to-center
• Set Contents: 1x cylinder head gasket, 1x cylinder base gasket
• Engine Fitment: GY6 QMI/QMJ 152/157 (modified layouts)

Fitment

This gasket set is compatible with the following GY6 engine platforms:

• GY6 4-stroke QMI152
• GY6 4-stroke QMJ157

Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.

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