Description: This Listing Includes ONE BRAND NEW Air Box For 49cc, 50cc 139qmb Long Case Motors. These Motors are Very Popular On Gy6 Scooters And Mopeds. There Are Two Different Kinds of 139qmb Motors. One Is A Short Case Engine With A 10 Inch Rear Rim And The Other One Is A Long Case Engine With A 12 Inch Or 13 Inch Rear Rim. This Air Box Is Made To Fit The Long Case 139qmb Engine With A 12 Or 13 Inch Rear Rim. You Can Find This Scooter Air Box On Many Models Such As: Roketa, Sunl, Baja, Kazuma, Carroll, Stream, Eagle, Taotao, Red Cat, Tank, Giovanni, Aimex, Jackel, Wildfire, Xtreme, Seaseng, Qlink, Yiben, Jonway, JMstar, Vento, TNG, VIP, Honda, Yamaha, Vespa, Ect. Package Includes: 1 X Air Box With Air Filter Shipping and Handling: Fast N FREE USPS Priority Shipping Items will be shipped out within 48 hours after payment cleared. VIa USPS First Class Return / Refund Return is accepted within 60 days after the buyer's receiving the item. If this item is defective upon receipt, customer has up to 60 days from date of receipt for exchange of a new one. Include your name, address, item, daytime telephone, how you paid, and if you are requesting a refund or exchange. After getting the returned item, we will refund the customer at the item's price ( excluding the shipping costs to and from).