Fitment: for GX240 8HP, GX270 9HP, GX340 11HP, GX390 13HP Portable Generator. Condition: item 182F and 188F open-frame gasoline generators that produce between 5,500 and 8,000 watts Suitable from 5500 to 8000 W Blue Max, Rural , , , , , Pro-Series, ETQ, All power, power Replace Part Number: For E * 6500 GX390 13HP 16100-Z5R-743 For E * 5000 GX340 11HP 16100-Z5L-F11 Colour:as shown Material:aluminum Specifications: Air Intake Diameter: 29.90 mm The distance between the holes of the air intake: 52.40 mm Intake motor diameter: 26.90 mm Engine Inlet Hole: 52.10mm Package Contents: 1*Carburetor Note: Please compare our with your motorcycle or old parts that you have, by size, model and others before you buy Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.