Brand 
Continental
Engine Model 
TSIO-520-C1B
TSIO-520-C2B
TSIO-520-C3B
TSIO-520-G
TSIO-520-H1B
TSIO-520-H2B
TSIO-520-H4B
TCM FUEL PUMP 646768-2A1
TCM FUEL PUMP 646768-2A1
TCM FUEL PUMP 646768-2A1
TCM FUEL PUMP 646768-2A1
Footnotes 

This listing is for reference only.  For specific application information, or if there is any doubt about an application, refer to the aircraft equipment list or contact the engine manufacturer.

The application should be verified by type certificate data, as many engine models may use more than one P/N in different airframe installations.

Representative image only, actual item features may vary.