The 629680 is an oil transfer collar assembly used in Continental aircraft piston engines, primarily in the accessory / governor oil transfer system. It provides a sealed rotational oil passage between stationary and rotating engine components, allowing controlled oil flow through the crankcase interface.

This part is commonly listed as “Governor Oil Transfer Collar” or “Front Drive Oil Transfer Collar Assembly” depending on engine configuration and IPC revision.

Key features include:

OEM Continental engine oil transfer collar assembly
Enables sealed oil transfer across rotating interfaces
Used in governor / accessory drive oil routing systems
Precision-machined aerospace-grade metal construction
Includes internal sealing surfaces and mounting hardware
Designed for high-pressure, high-temperature engine oil environments
Critical sealing component in engine lubrication system architecture
Used across multiple Continental IO/TSIO engine families (e.g., IO-520 / IO-550 variants)