Vzduchový filtr HiFlo Yamaha RD250 73-79, RD400 78-79

Overview

This Hiflofiltro air filter has been specifically engineered for Yamaha RD 250 DX and RD 400 models listed below, including US market variants where shown. 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 throttle response and dependable performance for classic two-stroke road motorcycles.

Motorcycle fitment

This air filter is suitable for the following Yamaha models:

• Yamaha RD 250 DX C Air Filter HiFlo 1976 (All Regions)
• Yamaha RD 250 DX D Air Filter HiFlo 1977 (All Regions)
• Yamaha RD 250 DX E Air Filter HiFlo 1978 (All Regions)
• Yamaha RD 400 E Air Filter HiFlo 1978 (All Regions)
• Yamaha RD 400 F Air Filter HiFlo 1979 (All Regions)
• Yamaha RD 400 C Air Filter HiFlo 1976 (All Regions)
• Yamaha RD 400 D Air Filter HiFlo 1977 (All Regions)
• Yamaha RD 400 C (US Market) Air Filter HiFlo 1976 (USA)
• Yamaha RD 400 D (US Market) Air Filter HiFlo 1977 (USA)
• Yamaha RD 400 E (US Market) Air Filter HiFlo 1978 (USA)

If your motorcycle is listed above, this filter is the correct direct replacement for the original Yamaha 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 throttle response and stable power delivery
• Protects internal engine components from dust and airborne contaminants
• Dependable performance for classic road and restoration projects
• 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 throttle response feels less sharp than normal
• After extended riding in dusty or wet conditions

Installation notes

• Access the airbox following the Yamaha service manual for your model
• 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, professional installation can help ensure correct fitment

Care and maintenance

• This is a paper air filter and should not be oiled or washed
• Inspect periodically if the motorcycle is used regularly
• Replace at the next service interval if the element shows significant contamination

Technical summary

• Brand: Hiflofiltro
• Wemoto part number: AB7035
• Hiflofiltro reference: HFA4201
• OEM equivalent: Yamaha RD 250 / RD 400 air filter element for listed models

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