Subaru Wrx Clutch Flywheel

Choosing A Clutch Flywheel

A clutch flywheel must match the engine's crankshaft mounting and the transmission and clutch fitted to the vehicle. Compare the mounting pattern, friction surface and ring-gear specification with the intended application. A matching bolt count alone does not establish the complete fit.

A-Premium offers solid clutch flywheels for selected vehicles. Their diameters and ring-gear tooth counts differ by application, so choose the part specified for the engine and transmission combination.

What An Engine Flywheel Does

The flywheel rotates with the crankshaft and stores rotational energy, helping the engine turn through changes in the force produced by its cylinders. In a manual-clutch arrangement, it also provides a friction surface for the clutch disc.

The starter pinion engages the flywheel's ring gear to turn the engine during starting. The correct ring gear must match the starter and the engine application.

Flywheel Condition And Clutch Service

Heat damage, cracks or an uneven friction surface can affect clutch engagement. Inspect the flywheel when the clutch is being serviced, along with the clutch disc and pressure plate. A vibration or slipping complaint can involve more than one component.

Flywheel designs differ. A dual-mass unit has internal damping components, while a solid flywheel is constructed differently. Follow the service limits and handling instructions for the installed design.

Frequently Asked Questions (FAQ)