KTM 350 SX Oil & Air Filter
GarageDex's powersports data shows the KTM 350 SX uses air filter HFF5021. Filter fitment varies by year - see the table for each range.
Filter fitment by year
| Years | Air filter | Oil filter | Performance oil |
|---|---|---|---|
| 2026 | HFF5021 | - | - |
| 2023-2025 | HFF5021 | HF652 | - |
| 2016-2022 | HFF5019 | HF652 | - |
| 2011-2015 | HFF5018 | HF652 | - |
Match the exact part code. Performance oil filters are optional racing-spec upgrades that fit the same mount.
Filters for your KTM 350 SX
The recommended part is the HFF5021 air filter. Match that code (or a listed equivalent) - powersports filters are model-specific, so the code matters more than the brand.
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Frequently asked
What oil and air filter does a KTM 350 SX take?
GarageDex's powersports data shows the KTM 350 SX uses air filter HFF5021. Filter fitment varies by year - see the table for each range.
What are the KTM 350 SX filter part numbers?
The KTM 350 SX uses air filter HFF5021. Match the exact part code - powersports filters are model-specific.
Does the KTM 350 SX filter change by year?
Yes - the fitment differs across the years we cover: 2026 uses air HFF5021; 2023-2025 uses air HFF5021, oil HF652; 2016-2022 uses air HFF5019, oil HF652; 2011-2015 uses air HFF5018, oil HF652. Match your exact year in the table.
How often should I change a powersports oil and air filter?
Change the oil filter at every oil service - typically every 3,000-4,000 miles or once a season. Clean or replace the air filter more often if you ride dusty trails; a clogged filter chokes power and fuel economy.