High quality magnets to provide more starting torque. Double sealed housings to keep dirt out for longer service life. 90/10 copper bushings and/or heavy duty bearings for longer life. High quality brushes for longer service life. All electrical components must be fitted by a qualified technician. Before fitting electrical components ensure the root cause of the original failure has been addressed. International orders may be subject to local charges. These charges must be paid by the recipient of the parcel. CMS have no control over these charges nor predict what they may be CMS cannot be held responsible for any additional charges on the order, nor accept a return of the order in this case.