Air Filter Cleaning – Replacement Guide for 2017 Suzuki DRZ400SM

Shop parts for a 2017 Suzuki DRZ400SM Dirt Bike.

The air filter is crucial for protecting your 2017 Suzuki DRZ400SM's engine from dirt and debris. Regular maintenance ensures optimal performance, long engine life, and reliability whether you're commuting or pushing the supermoto to its limits. This proprietary MotoSport guide ensures you get the most from your DRZ400SM’s unique design and performance features.

Know Your 2017 DRZ400SM Air Filter

  • Factory filter type: Foam element with cage support for excellent airflow and dust filtration. Aftermarket cotton gauze and high-flow designs also fit this model, offering performance upgrades.
  • OEM part number: 13780-44E00 for direct factory replacement.
  • Unique to DRZ400SM: The airbox is accessible under the left side panel – no need to remove the full seat on this supermoto variant, making maintenance faster than some competitors.
  • Note for owners: DRZ400SM models are renowned for reliability, but running with a dirty or poorly oiled filter can risk premature engine wear – especially on-road with variable conditions or off-road adventures.

Cleaning Instructions

  1. Preparation:
    • Gather latex gloves, safety glasses, clean rags, and a dedicated air filter cleaner – avoid household degreasers that leave residue.
    • Make sure the engine is cool before proceeding.
  2. Access the Filter:
    • Remove the left side panel using a 10mm socket or Phillips screwdriver.
    • Locate the airbox behind the battery tray and carefully remove the air filter and cage.
  3. Wash – Dry:
    • Place the foam filter in a bucket and submerge it in air filter cleaner. Gently squeeze without twisting to avoid tearing seams.
    • Rinse several times any cleaner residue using clean water. Let air dry – do not use compressed air, which can damage foam pores.
  4. Oil the Filter:
    • Apply motorcycle-specific filter oil evenly onto the foam. Massage to saturate without dripping excess.
    • Ready-to-use aftermarket cotton gauze designs (like SU-4000 or K&N versions) require their own oil treatment if specified.
  5. Reinstall:
    • Inspect the airbox for dirt and wipe clean. Seat the filter with its cage firmly – be sure gasket surfaces are flush to prevent leaks.
    • Reattach side panel, secure all screws.

Replacement Tips

  • Replace your air filter every 6–12 months (or sooner in dusty environments).
  • Consider performance upgrades – cotton gauze filters improve airflow, while foam retains maximum dust control.
  • Always verify compatibility with your 2017 DRZ400SM – use exact fit parts for drop-in installation and peace of mind.

MotoSport Pro Tips for DRZ400SM Owners

  • Supermoto airbox location streamlines air filter checks, making regular inspection quick and easy – ideal for post-ride maintenance.
  • Always use fresh oil on foam filters and follow specific instructions for aftermarket performance elements; clogged or dry filters increase engine risk.
  • If you ride on-road & off-road, inspect the filter more often – the combination exposes your engine to extra airborne grit.

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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.