Description
Overview:
This genuine Husqvarna air filter (part no. 581 45 18-01 / 581451801) is an OEM replacement for selected 525‐series handheld machines, including the 525RK and 525RX brushcutters. Built from quality filtration media, it cleans the intake air before it reaches the carburettor and cylinder on small 2‐stroke engines. By trapping dust, grass fines and debris, it helps the engine breathe correctly, maintain power, and reduce internal wear. Designed specifically for the listed Husqvarna models, it fits the original airbox without modification and supports reliable running in everyday grounds care and professional brushcutting. Regular replacement of the air filter is an essential part of routine servicing to keep starting easy, throttle response crisp, and emissions controlled.
Key Features:
- Genuine Husqvarna OEM part for assured compatibility and fit on listed models.
- High-efficiency filtration helps protect piston, cylinder and carburettor from abrasive dust and debris.
- Supports smooth running, stable idle and consistent power output in 2‐stroke engines.
- Durable filter media suitable for outdoor use in dusty and grassy conditions.
- Simple to replace during routine maintenance; fits directly in the original airbox.
- Helps maintain fuel efficiency and extend engine service life between overhauls.
- Husqvarna reference: 581 45 18-01 (also supplied as 581451801).
Typical Applications:
Routine servicing of Husqvarna 525‐series brushcutters, pole saws and hedge trimmers used for verge cutting, landscaping, estate maintenance, and grounds care. Ideal for machines working in dusty, dry grass or hedge clippings where intake protection is critical to preserve engine performance and reliability.
Also known as:
Air intake filter, air cleaner element, engine air element, filter cartridge, intake element, replacement filter, service filter for 2‐stroke handheld equipment.
Fits Models:
325HE3, 325HE4, 525HE3, 525HE4, 525HF3S, 525LK, 525P4S, 525P5S, 525PT5S, 525RJX, 525RK, 525RX, 525RXT, 525DEPS MADSAW, 525LX, 525DEPSMADSAW
Alternate Part Numbers:
581 45 18-01, 581451801
Product Specifications
| L&S Part No. | 581 45 18 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 581451801 |
| Unit of Sale | 1 |
| Applications | 325HE3, 325HE4, 525HE3, 525HE4, 525HF3S, 525LK, 525P4S, 525P5S, 525PT5S, 525RJX, 525RK, 525RX, 525RXT, 525DEPS MADSAW, 525LX, 525DEPSMADSAW |
| Machine Type | Brushcutters, Pole Pruners |
| Fits Brands | Husqvarna |
| Fits Models | 325HE3 | 325HE4 | 525HF3S | 525P4S | 525P5S | 525PT5S | 525LK | 525RJX | 525RK | 525RX | 525RXT | 525HE3 | 525HE4 |
