finding the Rotax engine manufacture date and model

S/N 4923448

• ROTAX 912 S3
• Manufacturing Date: 31.01.2007
• TBO: 1500 HRS

Configuration:

• S3 I=2,43
• without governor, with cover
• with mech. tachometer pick up
• without external generator
• without air guide baffle
• with std. temperatur sensors
• with screw connection metrical
• with expansion tank
• without engine truss
• without air box
• starter standard

is it possibel to know detail on this

ROTAX ULS SN 5647142

Also the manufactor date of this “gear set” s/n 06.2198

This is because I need to determine if SB-912-056-UL was already applied.

Thanks in advance

Question:

Could someone please tell me when was the year of manufacture of Rotax 912Uls Serial number 9569900 and if its the model with the new cylinder head where I can only use the expensive Rotax spark plugs?

Answer:

• S/N 9569900
• ROTAX 912 ULS2-01
• Manufacturing Date:10.11.2017
• TBO: 2000HRS

Configuration

• without 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 nipple conn. for oil pump
• with expansion tank
• without air box
• bent sockets for engine truss
• starter large

Rotax did not make any changes to the cylinder heads on the 912ULS to accommodate the new spark plugs. With that said, NGK spark plugs are no longer authorized for use in any Rotax aircraft engine, as mandated by NGK themselves. Because of this, you will not be able to purchase NGK spark plugs from any Rotax distributor, service center, or repair facility.

The only engine that received an updated cylinder head, with new thread sizes designed specifically to accept the new BRP-branded spark plugs, is the Rotax 582 Model 17. This is likely where some of the confusion comes from.

To clarify: the 912ULS still uses its original cylinder head design, and NGK plugs are no longer approved for use in Rotax aircraft engines.