Overview
This Hiflofiltro air filter has been specifically engineered for Yamaha and MBK 50cc scooter applications including the Yamaha Why 50 and MBK Flipper 50. It replaces the original equipment air filter and installs directly into the stock airbox with no modification required. The premium powerflow filter media is designed to deliver consistent, clean airflow while helping to protect the engine from dust, dirt and airborne contaminants. This supports smooth running and dependable performance for everyday riding and commuting.
Motorcycle fitment
This air filter is suitable for the following models:
- Yamaha Scooter 50 Why 1998 (all regions)
- Yamaha Scooter 50 Why 1999 (all regions)
- Yamaha Scooter 50 Why 2000 (all regions)
- Yamaha Scooter 50 Why 2001 (all regions)
- Yamaha Scooter 50 Why 2002 (all regions)
- Yamaha Scooter 50 Why 2003 (all regions)
- Yamaha Scooter 50 Why 2004 (all regions)
- Yamaha Scooter 50 Why 2005 (all regions)
- Yamaha Scooter 50 Why 2006 (all regions)
- Yamaha Scooter 50 Why 2007 (all regions)
- Yamaha Scooter 50 Why 2008 (all regions)
- Yamaha Scooter 50 Why 2009 (all regions)
- Yamaha Scooter 50 Why 2010 (all regions)
- MBK Scooter 50 Flipper 1998 (all regions)
- MBK Scooter 50 Flipper 1999 (all regions)
- MBK Scooter 50 Flipper 2000 (all regions)
- MBK Scooter 50 Flipper 2001 (all regions)
- MBK Scooter 50 Flipper 2002 (all regions)
- MBK Scooter 50 Flipper 2003 (all regions)
- MBK Scooter 50 Flipper 2004 (all regions)
- MBK Scooter 50 Flipper 2005 (all regions)
- MBK Scooter 50 Flipper 2006 (all regions)
- MBK Scooter 50 Flipper 2007 (all regions)
- MBK Scooter 50 Flipper 2008 (all regions)
- MBK Scooter 50 Flipper 2009 (all regions)
- MBK Scooter 50 Flipper 2010 (all regions)
- MBK Scooter 50 Flipper 2011 (all regions)
- MBK Scooter 50 Flipper 2012 (all regions)
If your motorcycle is listed above, this filter is the correct direct replacement for the original air filter. (wemoto.com)
Why choose Hiflofiltro
- Direct replacement design with accurate dimensions for a reliable seal
- Premium powerflow media engineered for consistent filtration and airflow
- Helps maintain smooth engine response and dependable performance
- Trusted aftermarket brand used by riders and professional workshops worldwide
Benefits on the road
- Supports smooth running and stable performance
- Protects internal engine components from dust and airborne contaminants
- Dependable performance for commuting and everyday riding
- Simple replacement keeps your airbox functioning as designed
When to replace your air filter
- At the service interval specified in your owner’s manual
- If the filter element appears heavily soiled or discoloured
- When performance feels less sharp than normal
- After extended riding in dusty or wet conditions
Installation notes
- Remove the seat and any required body panels to access the airbox
- Clean the airbox interior with a lint-free cloth before fitting the new filter
- Ensure the sealing edge sits evenly within the airbox frame
- Reassemble all components carefully before riding
- If you are unsure about the fitting process, having a professional technician install the filter can help ensure everything is set up correctly
Care and maintenance
- Inspect periodically, especially if riding in dusty conditions
- Replace at the next service interval if the element shows significant wear or contamination
Technical summary
- Brand: Hiflofiltro
- Wemoto part number: AB9435
- Hiflofiltro reference: HFA4003DS
- OEM equivalent: Yamaha 3EU-E4451-00-00 air filter element
Why buy from Wemoto
- Fast dispatch with clear returns support
- Comprehensive range of service parts to complete your job in one order
- Customer service backed by motorcycle experience
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