Air Filter Cleaning & Replacement Guide for 2018 Suzuki DRZ125L

Shop parts for a 2018 Suzuki DRZ125L Dirt Bike.

Keeping the air filter of your 2018 Suzuki DRZ125L well-maintained is essential to engine performance and longevity. This guidebrought to you by MotoSportdelivers model-specific steps to clean and replace your air filter, ensuring you get reliable performance on every ride.

When & Why to Clean or Replace the Air Filter

The foam air filter on the DRZ125L captures dirt, dust, and debris before they enter your engine. Regular inspection and maintenance are necessary, especially after riding in dusty or muddy environments. A clogged air filter restricts airflowdecreasing power and increasing wear. For best results, inspect the filter after every long or dirty ride.

Tools & Supplies You'll Need

  • 8mm socket or Phillips screwdriver (to remove seat and filter cover)
  • Clean container for washing
  • Petroleum-based solvent or specific air filter cleaner
  • High-quality air filter oil
  • Latex or nitrile gloves
  • Clean rags

Removing the Air Filter on the 2018 DRZ125L

  1. Remove the seat: Use your 8mm socket or screwdriver to remove the two bolts securing the seat, then lift it off to reveal the airbox.
  2. Take off the airbox cover: Release the clips or remove screws holding the airbox lid, being careful not to let dirt fall inside.
  3. Unfasten and remove the air filter: Carefully detach the foam air filter from its cage or mounting post.

Cleaning the Air Filter

  1. Inspect: Look for tears or damage. Replace if the foam is compromised.
  2. Wash: Fill your container with solvent or a specific foam filter cleaner. Submerge the filter and gently squeezedo not wring or twist, as this can tear the foam. Repeat with fresh solvent until all dirt and oil are gone–you'll see dark fluid as the dirt washes out–and finish with a rinse in clean water.
    Note: Some owners use gasoline as a last resort, but dedicated cleaners are less harsh on foam.
  3. Dry: Wring out excess liquid, then allow the filter to fully air dry out of direct sunlight.
  4. Oil: When dry, evenly coat the filter with air filter oil, working it through every pore. Squeeze out excessan over-oiled filter can restrict airflow.

Reinstalling or Replacing the Air Filter

  1. Inspect and clean the filter cage and airbox interior using a dry rag. Ensure no dirt enters the intake tract.
  2. Refit the freshly-oiled filter to its cage or mounting post.
  3. Replace the airbox cover and reattach the seat.

Special Notes for the 2018 Suzuki DRZ125L

  • The DRZ125L uses a durable foam air filter, but the tight airbox design means any dirt entering during filter service can quickly reach the engine. Always clean the airbox area before opening, and keep the intake protected.
  • For riders in exceptionally dusty or sandy terrain, MotoSport recommends installing an extra foam filter screen for added engine protection and longer filter life.
  • Replace the filter immediately if the foam shows tears or hardened spots, or at least once per season of heavy riding.

Additional Maintenance

  • Check the airbox drain for water or heavy mud accumulation after deep water crossings.
  • While the air filter is out, take time to inspect the airbox for signs of intake leaks or excessive dust build-up.

Performing regular air filter cleaning and replacement is one of the simplest ways to prolong engine life and ensure strong performance from your 2018 Suzuki DRZ125L. Keep your dirt bike in peak condition with genuine replacement parts and rider-tested supplies from MotoSport.

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Shop Intake Parts for a 2018 Suzuki DRZ125L Dirt Bike.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.