Air Filter Cleaning – Replacement Guide for 2018 Suzuki DRZ70

Shop parts for a 2018 Suzuki DRZ70 Dirt Bike.

The air filter on your 2018 Suzuki DRZ70 is a vital barrier between the engine and dirt, dust, and debris that threaten your bike's performance and longevity. Proper cleaning – and regular replacement – is crucial, especially for youth bikes often exposed to harsh conditions. The DRZ70 uses a foam dual-stage air filter designed to maximize airflow while protecting your engine against contaminants. Owners note that the air filter is inexpensive and quick to access, making maintenance easy and accessible for all skill levels.

Unique Features of the 2018 DRZ70 Air Filter

  • Dual stage foam design: Features a coarse outer shell for trapping larger debris and a fine inner layer for finer particles, ensuring high filtration with excellent airflow.
  • Accessible location: The air filter sits behind an easily removed airbox cover secured by four Phillips screws—no special tools required.
  • Sealing ring: A thick, flat foam ring ensures a tight seal against the airbox, preventing leaks and maximizing engine protection.

Step-by-Step Cleaning Guide

  1. Remove the seat and locate the airbox cover behind it. Unscrew the four Phillips screws and take off the cover.
  2. Carefully remove the air filter from the airbox. Inspect for excessive dirt, damage, or wear; if it's beyond cleaning, replacement is recommended.
  3. If cleaning, submerge the filter completely in warm, soapy water. Gently squeeze (do not wring or twist) until dirt is removed. Rinse thoroughly and allow to air dry.
  4. Once dry, apply filter-specific oil. Thoroughly and evenly distribute the oil by hand until the entire foam is coated but not dripping. Excess oil impedes airflow; insufficient oil reduces protection.
  5. Optional but highly recommended: Apply a light coat of grease to the outer edge of the filter where it contacts the airbox for improved seal against fine dust intrusion.
  6. Reinstall the filter, ensuring correct positioning. Secure the airbox cover and screws.

Replacement Instructions

  1. Remove the old filter following steps 1-2 above.
  2. Install the new air filter, aligning it carefully with the mounting points.
  3. Make sure the new filter is pre-oiled or oil it yourself before installation. Distribute oil evenly to maximize filtration.
  4. Apply grease to the sealing ring before installing, if desired.
  5. Replace the airbox cover and secure with screws.

Maintenance Tips – What DRZ70 Owners Should Know

  • Frequency: Clean the air filter after every few rides–more often in dusty conditions or wet weather.
  • Replacement: Inspect the foam for tears, hardened spots, or breakdown. If damaged, replace with a quality dual-stage filter for the DRZ70's year/model.
  • Performance: A clean, properly oiled filter improves throttle response and engine life. Neglect can lead to poor performance or costly repairs.
  • Easy swap: The DRZ70's filter change takes only a few minutes and can significantly reduce maintenance costs, making this a perfect DIY task even for novice mechanics.
  • Use manufacturer-recommended parts: Filters like Twin Air offer reliable protection and increased airflow.

Caring for your 2018 Suzuki DRZ70's air filter is one of the fastest ways to maintain peak performance & safeguard your investment. Keep your dirt bike running clean with regular maintenance, and shop trusted parts only at MotoSport.

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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.