Brand New - Aftermarket - Carburetor. Intake diameter ID: 37.5mm. Intake diameter dD: 48.8mm.Air filter inner diameter:43.8mm. Air filter outside diameter: 55mm. Please check for the photos and measurements. If you are just unhappy with the condition of your item or changed your mind about it. Simply just send it back unused within 14 days of recieving your item and we will either send you another. And an "Unpaid item case" will be opened. If customer still doesnt pay, the item will be relisted and the. And/or (+) feedback that would much be appreciated. Sometimes the system gets a bit glytchy and feedbacks. We would try our best to come to an agreement.