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Five new air pre-filter foam pieces for petrol trimmers

LAHDEK

LAHDEK Air Pre Filter Foam 5 Pack For Husqvarna 123L 223L 223R 322C 322L 322R 323HE3 323L 323RJ 323P4 325CX

SKU CH-YB62-GW4H9

Pack of five air pre-filter foam pieces replaces OEM part 537186301 on compatible Husqvarna petrol trimmers

  • 5-pack provides multiple replacements for extended use
  • Fits Husqvarna 123L 223L 223R 322C 322L 322R 323HE3 323L 323RJ 323P4 325CX series
  • Replaces OEM part 537186301 for direct compatibility
  • Designed for 2-stroke petrol trimmers and brushcutters
  • Air pre-filter foam traps debris before main filter

Compatible Trimmers

This pack of five air pre-filter foams fits a wide range of Husqvarna petrol trimmers. Models covered include the 123L, 223L, 223R, 322C, 322L, 322R, 323HE3, 323L, 323RJ and 323P4. It also suits the 325CX, 325E X series, 325HDA55X, 325HDA65X, 325HE3, 325HE3X, 325HE4, 325HE4X, 325LXT, 325P4 X series, 325P5 X series, 325RX, 325RXT, 325RDX and 325RJX units.

Engine Protection

The foam acts as a first barrier, trapping dust and debris before they reach the main filter on two-stroke petrol engines. Cleaner intake air helps maintain consistent combustion and reduces wear on internal components. Replacing the pre-filter regularly keeps the engine running smoothly in dusty outdoor conditions. The pack provides enough spares for multiple service intervals.

Simple Maintenance

Each foam piece installs directly into the existing air box without tools or modifications. The parts replace OEM reference 537186301, ensuring correct fitment for the listed models. Having five units on hand means you can swap a dirty filter immediately and avoid downtime during heavy cutting seasons. This set is not intended for diesel or four-stroke power units.

Highlights

  • 5-pack provides multiple replacements for extended use
  • Fits Husqvarna 123L 223L 223R 322C 322L 322R 323HE3 323L 323RJ 323P4 325CX series
  • Replaces OEM part 537186301 for direct compatibility
  • Designed for 2-stroke petrol trimmers and brushcutters
  • Air pre-filter foam traps debris before main filter

Specifications

No published specifications for this item yet.

Questions about this item

How do I fit the pre-filter foam onto the Husqvarna 325RX air box?

Remove the cover, pull off the old foam, press the new piece over the inner filter until it seats evenly, then refit the cover — the step most people skip is checking that the foam lip sits flat all round.

When should I swap the foam on a 323HE3 trimmer?

Replace it when the foam looks dark, feels brittle, or tears — typically at the start of each season or after heavy dusty work.

What limits how long the foam lasts on a 123L running at full throttle?

Fine dust clogs the pores first, choking airflow and making the two-stroke engine run rich and overheat.

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