OIL SEAL 20x42/43x8/9 TC OEM HIGH QUALITY CRANKSHAFT SEAL.
MADE IN JAPAN [WITH TEFLON LIP] BALLBALLS 34-1056

PTFE lip seals are formed or machined from wear resistant PTFE/Teflon composites for long life, low friction, high surface speeds, poorly lubricated conditions and soft shafts.

Part No. 58-5101.AB.CR (oro2u.com)

Cross reference numbers ONLY.
634139, 6614877B, S200420XY,   100662300 ,

2 stroke 50cc Apex 50cc Artic Cat Polaris 50cc Eton 50cc Kasea 50cc ATV Can Am 2 stroke 50cc ATV, Kymco 50cc ,
Minarelli 50 cc (type MA, MY, CW, CA, CY), CPI 50 cc) ,
E-Ton (Eton)# 650112 Direct Fit
MALOSSI MBK Mach G 50 2t LC