Honda VTX 1800 Air Filter Replacement

Change the oil, then change the air filter. It’s a common tandem maintenance procedure for your Honda motorcycle

Watch the video above and follow the steps below to learn how to change the air filter on a Honda VTX 1800.

Tools and Parts Needed – Honda VTX 1800 Air Filter Service


  • 4mm Allen

NOTE: We’re including the process of using a reusable K&N filter, but to adapt to the Honda filter it’s simple: instead of cleaning it, you’ll just throw it away and replace it with a new filter. If you choose to upgrade to a reusable K&N filter, here are the recommended parts and supplies:

Honda VTX Air Filter Change

Step 1. Remove the five 4mm Allen bolts that hold the air filter cover in place (located on the right side of the motorcycle), followed by the air filter cover itself. 

Honda VTX 1800 air filter replacement

Step 2. Remove the air filter. 

NOTE: If you’re replacing it with a stock filter like the Honda VTX 1800 air filter, simply replace it, close the cover back up and you’re done. If you’re replacing the air filter with or cleaning a K&N reusable air filter, follow the next steps. 

Honda VTX motorcycle air filter change

How to Clean and Treat a K&N Air Filter

Step 3. Liberally spray PJ1 air filter cleaner both on the outside and inside of the filter, then let the spray soak in for about 15 minutes. 

Honda motorcycle K&N filter cleaning

K&N air filter cleaning Honda VTX

Step 4. Soak the filter in water. 

PRO TIP: As you can see in the photo below, a lot of sediment and grime came out of our filter. If yours is really dirty, soak it once, then dump out the water and soak it again with fresh water. 

Honda VTX air filter cleaning K&N

Step 5. Dry the filter. 

PRO TIP: To speed up the process, use a little compressed air to blow it out. This also helps remove some of the particulates dirtying up the filter. Be careful not to hit the filter with too powerful a blast of air, which could damage the filter fabric. 

Honda VTX reusable air filter cleaning

Step 6. After the filter is completely dry, spray in an even coat of PJ1 fabric air filter treatment on the inside and the outside of the filter. 

NOTE: PJ1 makes filter treatments for both fabric and foam filters. The products are not interchangeable. A foam filter oil will damage a fiber filter, so only use the fabric filter treatment. 

Honda VTX 1800 K&N air filter

Honda VTX motorcycle air filter cleaning

Step 7. Wipe any excess treatment spray off the plastic/rubber surfaces on the filter.  

Honda VTX1800 motorcycle air filter service

Step 8. Install the air filter, and inspect the gasket around the filter cover’s opening for any cracks or breaks before replacing the cover.    

Honda VTX air filter cover

Step 9. Replace the cover and the five 4mm Allen bolts to finish the job. 

NOTE: Don’t overtighten the bolts, just snug them down.  

Honda motorcycle air filter service

Have you changed the oil on your Honda motorcycle yet? Watch the video below to see how to change the oil on a Honda VTX 1800. 



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