Yamaha BT1100 Bulldog Oil & Air Filter
GarageDex's powersports data shows the Yamaha BT1100 Bulldog uses air filter HFA4603 and oil filter HF145.
Filter fitment by year
| Years | Air filter | Oil filter | Performance oil |
|---|---|---|---|
| 2002-2006 | HFA4603 | HF145 | - |
Match the exact part code. Performance oil filters are optional racing-spec upgrades that fit the same mount.
Filters for your Yamaha BT1100 Bulldog
The recommended parts are the HFA4603 air filter and the HF145 oil filter. Match those codes (or a listed equivalent) - powersports filters are model-specific, so the part code matters more than the brand.
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Frequently asked
What oil and air filter does a Yamaha BT1100 Bulldog take?
GarageDex's powersports data shows the Yamaha BT1100 Bulldog uses air filter HFA4603 and oil filter HF145.
What are the Yamaha BT1100 Bulldog filter part numbers?
The Yamaha BT1100 Bulldog uses air filter HFA4603 and oil filter HF145. Match the exact part code - powersports filters are model-specific.
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.