CYLINDER HEAD VALVE OD=16mm L=64mm Fits Most GY6-50, QMB139, GY6-125, GY6-150 & Honda Copy 50-125cc engines.

These QMB139 (GY6-50) 49cc cylinder head valves replace
E-Ton (Eton)# 813519 Direct Fit
Tomos Nitro 50 # 14711-BE2-A000



Common applications include:
E-Ton 50cc Sport (ESport) (Vin: TCA)