Description
Overview:
This is a genuine Stihl air filter (OEM No. 4242 120 1800) for petrol hedgetrimmers, designed to keep fine dust and debris out of the engine and carburettor. Built with durable filter media in a robust plastic frame, it helps maintain clean airflow for reliable starting, smooth running and reduced wear. It is purpose-made for popular models such as the HS46C and HS56C, ensuring a precise fit inside the air box without modification. Using the correct filter helps the engine breathe properly, supports consistent performance and can improve fuel efficiency over time. As a direct replacement for a worn or clogged element, this part restores protection to the intake system and supports the manufacturer's recommended service routine.
Key Features:
- Genuine Stihl part for assured compatibility and performance (Brand: Stihl, MPN: 4242 120 1800)
- Precise fit for the HS46C/HS56C family for straightforward installation
- Durable filter media helps trap dust, grass fines and airborne particles
- Protects the carburettor and engine internals from premature wear
- Helps maintain smooth idling, clean acceleration and reliable starting
- Supports optimal airflow for consistent cutting performance
- Stable plastic frame resists deformation and seals securely in the air box
- Suitable for routine service replacement to keep maintenance simple
- Designed for outdoor use where exposure to dust and clippings is common
- OEM-quality construction for long service intervals under normal conditions
Typical Applications:
Routine servicing of Stihl petrol hedgetrimmers used in gardens, estates and landscaping work. Ideal for restoring performance after dusty jobs, hedge reductions, or prolonged use in dry conditions. Replaces a clogged or damaged element to protect the intake system and maintain reliable operation.
Also known as:
Air filter element, engine air filter, intake filter, pre-filter, hedgetrimmer air element, service filter, replacement air cartridge.
Fits Models:
HS 46, HS 46 C, HS 56 C, HS46, HS46 C, HS46C, HS56, HS56C, HS 46 C E, HS 56 C E, HS 46 C E Z, HS 46 Z, HS 56 Z, HS 56 C E Z, HS46CE, HS56CE, HS46CEZ, HS46Z, HS56Z, HS56CEZ
Alternate Part Numbers:
4242-120-1800, 42421201800
Product Specifications
| L&S Part No. | 4242 120 1800 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42421201800 |
| Unit of Sale | 1 |
| Applications | HS 46, HS 46 C, HS 56 C, HS46, HS46 C, HS46C, HS56, HS56C, HS 46 C E, HS 56 C E, HS 46 C E Z, HS 46 Z, HS 56 Z, HS 56 C E Z, HS46CE, HS56CE, HS46CEZ, HS46Z, HS56Z, HS56CEZ |
| Machine Type | Hedgetrimmers |
| Fits Brands | Stihl |
| Fits Models | HS 46, HS46 C | HS56 |
