{"product_id":"cylinder-head-139qmb","title":"Cylinder Head; 139QMB","description":"\u003cp\u003eThis cylinder head replaces the stock equipment on bikes running 139QMB engines. Don't forget a new gasket (part number 1100-1331 ) and the valve assembly (part number 1100-1328 )! Original Parts For Scooters SKU 151-213 Specifications: Bore: 39mm Exhaust Bolt Hole Spacing: 49.75mm Intake Bolt Hole Spacing: 44.75mm Compatibility: 139QMB-based 50cc \/ 80cc engines with the following engine codes: 139QMA 139QMB 1P39QMB 1P39QMA-2 YN139QMB JJ1P39QMB 139FMA-2 BD1P39QMB BN139QMB 147QMD Other QMA models Other QMB models Don't see your engine listed? If the engine code includes \"QM\" or \"FM\", this product is compatible with your vehicle. About Scooterworks: Since our beginning in 1989, Scooterworks has become a major supplier of parts and accessories for vintage and modern scooters. We have everything you need, from wear-and-tear items like tires and oil filters to after-market parts from brands like Malossi, NCY, Prima, YSS, Dr. Pulley, and more.\u003c\/p\u003e","brand":"prima","offers":[{"title":"Default Title","offer_id":48045269876923,"sku":"1100-1330","price":38.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0719\/1340\/6651\/files\/1100-1330_e8fd9cbc-68de-458e-a667-bb5a5f9eec4b.jpg?v=1783055610","url":"https:\/\/thriftyscooters.com\/products\/cylinder-head-139qmb","provider":"Thrifty Scooters","version":"1.0","type":"link"}