Manufacturing date

5646942 was produced 21-Jul-2006

Engine Type: ROTAX 912 ULS

Engine Version: 912 ULS2

Model Number: 309120110

Original Factory Configuration:

• with fuel lines
• UL2 I=2,43 with clutch
• without vacuum pump
• with green valve covers
• without mech. tachom. pick up
• without external generator
• without air guide baffle
• with std. temperatur sensors
• with screw connection metrical
• with expansion tank
• without air box
• without engine truss
• starter large

4403005

Thank you. 

4403005 was produced 18-Aug-1998

Engine Type: ROTAX 912 UL

Model Number: 309120010

(no additional information is found in the factory database)

Thank you sir. 

If you don't mind me asking, where are you getting this information from the serial number?