The exact oil filter part number for a Honda FourTrax 300 (TRX300) varies by year and variant; there isn’t a single universal number that covers all TRX300 models.
Over the years Honda produced several variations of the TRX300, and the associated oil filter cartridge part numbers changed with those updates. To ensure you get the correct filter, you should look up the parts diagram for your exact model year and VIN, or ask an authorized dealer to pull the correct OEM number from the official catalog.
Why the part number varies
Different production years and regional variants of the TRX300 used slightly different oil filter cartridges. While the filter type in many Honda four-strokes is a cartridge that sits in the housing, the exact cartridge part number can change with engine revisions or housing design.
Two main generations and their implications
There are at least a couple of broad generations within the TRX300 family, and each generation may correspond to a different cartridge specification. This is why two owners of similar-looking bikes from different years may require different part numbers for the same component.
How to find the correct part number for your bike
Use these steps to identify the exact OEM oil filter part number for your TRX300. This will help ensure compatibility and proper oil flow.
- Look up your exact model year and variant in the official Honda Parts Catalog or Powersports Parts Finder. Enter the year and model (for example, TRX300 FourTrax) to view the diagram that lists the oil filter cartridge and its part number.
- Check the oil filter housing diagram on the parts page for the correct cartridge assembly and notes about compatibility with engine revisions.
- Inspect the existing filter or its packaging for a printed part number or code that can be cross-referenced in the catalog.
- If you’re unsure, bring your bike’s VIN to an authorized Honda dealer; they can pull the exact OEM number from the catalog and confirm the correct part for your bike.
- Consider confirming with the dealer or catalog if you’re replacing with an aftermarket cartridge labeled as compatible with TRX300; verify size, thread, and seal dimensions to avoid leaks or improper fit.
Following these steps will help you identify the exact oil filter part number for your specific Honda TRX300 iteration and prevent misfits or oil leaks.
Where to verify and purchase
Best sources to confirm the part number and order the correct filter include:
- Honda Powersports Parts Catalog or Official Parts Finder on Honda’s website
- Authorized Honda ATV dealers or service departments
- Printed service manuals or workshop diagrams for your specific year and model
When in doubt, rely on the official catalog or an experienced dealer to confirm the exact OEM cartridge number for your FourTrax 300.
Summary
The Honda FourTrax 300’s oil filter part number is not universal across all years and variants. To obtain the correct number, identify your exact model year (and VIN if possible), consult the official Honda parts catalog or a dealer, and verify the cartridge against the diagram. This approach ensures proper fit, oil flow, and sealing for your TRX300.