729-17.7-30 DRIVE BELT
This is the standard replacement belt for your 139QMB long case engine. Tank, Sunl, Roketa, Vento, TNG, VIP, Baja, Jonway, JMstar, Peace, Lance, NST, as well as others. GY6 139QMB. Longcases normally have a 12-16″ diameter rear wheel. Same as the above belt, same great deal. Get ’em while they last.