Yamaha 50 Why Air & Oil Filter
The Yamaha 50 Why (1998-2010) takes a HFA4003DS air filter.
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Key takeaways
- Oil filter: not listed for this model.
- Air filter: HFA4003DS.
- Change the oil filter at every oil change; check the air filter each service.
- Covers 1998-2010.
Oil Filter-
Air FilterHFA4003DS
Verified fitLast checked
Sources: Hiflofiltro application catalogue
Reviewed by the CrankDex editorial team against manufacturer and retailer fitment data.
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Frequently asked
What air filter does a Yamaha 50 Why take?
The Yamaha 50 Why takes a HFA4003DS air filter. That part number, or a listed equivalent, is a direct fit.
How often should I change the filters on a Yamaha 50 Why?
Change the oil filter at every oil change, and inspect the air filter at each service - replace it when dirty, sooner if you ride in dust or off-road. Always follow your owner's manual interval.
More parts for your Yamaha 50 Why
We cover the other consumables for your machine too - the exact fit, cited, in one place.