PD42J-3 is a large displacement ATV ATV carburetor, suitable for YAMAHA 660 YFM660 2004-2007 NEW Carb Technical parameters Main measuring hole diameter: ??1.64 Idle speed hole diameter: ??0.65 Mixing chamber outlet diameter: ??42 Air filter Diameter of carburetor: ??62 Feature description PD42J-3 carburetor adopts advanced Japanese technology, with good performance, fuel economy and cost-effectiveness; it is a product favored by many brand motorcycle OEMs, and we will provide high-quality after-sales service. Packing list Product net weight (kg): 0.88 Packing inner box (mm): 170*150*12.50 Outer carton size (mm): 770*350*270 (20 sets per carton) Outer carton gross weight (kg): 21.4