ApplicationMounting for air filter is 35mm. For Piaggio NRG 50 MC2 DD LC 1998- ZAPC18 For Piaggio NRG 50 MC2 DT LC 1998- ZAPC18 For Piaggio NRG 50 MC2 DT LC 1996-1998 ZAPC040 For Piaggio NRG 50 MC2 DD LC 1996-1998 ZAPC040 For Piaggio NRG 50 MC2 Extreme DD LC 1999-2002 ZAPC220 For Piaggio NRG 50 MC2 Extreme DT compatible for AC 1999-2002 ZAPC210SpecificationProduct type: Carburetor Kit Main Nozzle Size: 75 Side Nozzle Size: 34 Nozzle needle type: A7 Main nozzle thread: M6 Side Nozzle Thread: M4 Feature: E-Choke Choke: Electric Connection-wide air filter: 35mm Choke in the scope of delivery :Ja Connection-wide suction nozzle: 25mm Modified Article:No Size: 17.5 Condition: New Warranty: one year warranty for any manufacturing defect Package：Carburettor, Electronic Choke and Universal Throttle Cable Instructions: Not Included, it could direct replace the old/broken one Function: Add more horse power while maintaining near stock fuel mileageFeatureTo mix air and gasoline in a correct ratio to ensure proper engine function. Give your machine the new power it deserves. Various compatibility.NotePlease use theclean fuel clean the channewl andair filters of carbs before installation, or the carb may be blocked. Compatibility chart is for reference only, to ensure fitment please double check the specification of the carb.