Feature: 1. Part Number: According to the original factory specifications, motorcycle carburetor reference OE number is Motorcycle Carburetor. 2. Applicable Model: Carburetor with air filter, fit for TRX450R 2004‑2005 motorcycle, provide better working performance. 3. Main Function: The carburetor uses the energy of the intake air flow to realize the atomization of gasoline and help the engine run normally. 4. Diemnsions: Intake inner diameter 42mm, intake outer diameter 48mm, air filter inner diameter 59mm, air filter outer diameter 62mm. 5. Good Replacement: The carburetor is the heart of the engine, it is used to replace, repair and upgrade the original carburetor to improve engine fuel performance. Specification: Item Type: Carburetor Material: MetalIntake Inner Diameter: Approx. 42mm/1.65inIntake Outer Diameter: Approx. 48mm/1.89in Air Filter Inner Diameter: Approx. 59mm/2.32in Air Filter Outer Diameter: Approx. 62mm/2.44inOE: 16100 HP1 673 Fitment: Fit for TRX450R 2004-2005 . Package List: 1 x Carburetor1 x Air Filter Note: 1. Please double check the part number of your item, matching information is for reference only.2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!