The 653698 starter shaft gear is an OEM Continental aircraft engine gear component used within the starter drive system. It transmits torque from the starter assembly to the engine accessory drive/crankshaft system during engine start-up, allowing the piston engine to reach self-sustaining operating speed. Once the engine is running, the starter disengages, and the gear remains part of the accessory drive assembly depending on configuration.

This component is engineered for high torque loading during engine cranking and is designed to withstand repeated engagement cycles and impact loading typical of aircraft starter systems.

Key features include:

Genuine Continental OEM starter drive gear
Hardened steel construction for high torque resistance
Precision-machined gear teeth for reliable engagement
Designed for repeated starter engagement/disengagement cycles
High load capacity during engine cranking operation
Compatible with Continental piston engine starter drive systems (application-dependent IPC)
Optimized for smooth torque transfer and reduced wear
Oil-lubricated operation for durability and heat reduction
FAA-approved aircraft engine accessory drive component
Used in certified Continental engine starting and overhaul procedures