248-23115-00 / 248-23115-01-00. This part is no longer available from Yamaha. It has been discontinued. 
 
This part originally came on the following models:
1969 Yamaha AT1E
1969 Yamaha CT1
1970 Yamaha AT1B
1970 Yamaha CT1B
1971 Yamaha AT1C
1971 Yamaha CT1C
1972 Yamaha AT2
1972 Yamaha CT2
1973 Yamaha AT3
1973 Yamaha CT3
1974 Yamaha DT100A
1974 Yamaha DT125A
1974 Yamaha DT175A
1975 Yamaha DT100B
1975 Yamaha DT125B
1975 Yamaha DT175B
1976 Yamaha DT100C
1976 Yamaha DT125C
1976 Yamaha DT175C
 
This part is a new reproduction of the original. The originals have deteriorated with time, as they are 50+ years old. The part number is used for reference purposes only and no source of manufacture or supply is implied. The price includes sales tax. If you want additional insurance coverage, contact me before ordering. If you do not purchase insurance, I am not responsible for mis-delivered packages, lost packages, or shipping damage.