Description
Overview:
The Sponge Air Filter is a genuine Husqvarna OEM part designed for 525‐series brushcutters and trimmers such as the 525 and 525L. Made from durable open‐cell sponge foam in a close‐fitting profile, it traps grass dust and fine debris while maintaining clean airflow to the engine. Consistent filtration helps protect cylinders and bearings, supports reliable starting, and keeps power delivery steady during long trimming sessions. This filter sits inside the airbox of your machine and is sized for an accurate seal to reduce bypass. It is suitable for routine servicing on professional and domestic machines working in dusty conditions. Genuine Part status ensures the correct material density and fit for Husqvarna air systems, helping extend engine life and reduce avoidable wear.
Key Features:
- Genuine Husqvarna OEM filter (Genuine Part) for correct fit and performance
- Open‐cell sponge foam media provides effective dust and debris capture with steady airflow
- Sized to the 525 platform for a secure seal inside the airbox
- Helps protect engine internals, supporting longer service life and dependable running
- Aids smooth starting, stable idle, and consistent throttle response
- Straightforward replacement during regular maintenance
- Durable construction suited to frequent use in grass, brush, and dusty environments
- Compatible across multiple 525 variants to simplify fleet upkeep
- Backed by Husqvarna part numbering for easy identification (577 85 15‐01)
Typical Applications:
Routine air intake maintenance for Husqvarna brushcutters and trimmers used in garden care, landscaping, grounds maintenance, and light commercial clearing. Ideal where frequent cutting generates fine clippings and dust that can clog the intake and reduce engine performance.
Also known as:
Foam pre‐cleaner, intake air filter element, air cleaner insert, sponge prefilter pad, trimmer filter element, brushcutter air filter, engine intake filter for two‐stroke tools.
Fits Models:
524, 524 L, 524L, 525, 525L, 525LK, 525LS, 525LST, 525RJD, 525RJX, 525RK, 525RS, 525RX, 525ECS, 525ES, 322L, 522 L, 522L
Alternate Part Numbers:
577 85 15-01, 577851501
Product Specifications
| L&S Part No. | 577 85 15 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 577851501 |
| Unit of Sale | 1 |
| Applications | 524, 524 L, 524L, 525, 525L, 525LK, 525LS, 525LST, 525RJD, 525RJX, 525RK, 525RS, 525RX, 525ECS, 525ES, 322L, 522 L, 522L |
| Machine Type | Brushcutters |
| Fits Brands | Husqvarna |
| Fits Models | 525L | 525LK | 525LS | 525LST | 525RJD | 525RJX | 525RS | 525RX | 524 L |
