KTM 300 SX Air & Oil Filter
The KTM 300 SX (1994-2026) takes a HFF5021 air filter.
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Key takeaways
- Oil filter: not listed for this model.
- Air filter: HFF5021.
- Change the oil filter at every oil change; check the air filter each service.
- Covers 1994-2026 (filter changed across years - see table).
Oil Filter-
Air FilterHFF5021
Verified fitLast checked
Sources: Hiflofiltro application catalogue
Reviewed by the CrankDex editorial team against manufacturer and retailer fitment data.
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KTM 300 SX filters by year
| Years | Oil filter | Air filter |
|---|---|---|
| 2023-2026 | - | HFF5021 |
| 1998-2003 | - | HFF5012 |
| 1994-1997 | - | HFF5015 |
Frequently asked
What air filter does a KTM 300 SX take?
The KTM 300 SX takes a HFF5021 air filter. That part number, or a listed equivalent, is a direct fit.
How often should I change the filters on a KTM 300 SX?
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 KTM 300 SX
We cover the other consumables for your machine too - the exact fit, cited, in one place.