Description
Overview:
This genuine Husqvarna gasket is an OEM sealing component for petrol chainsaws in the 135/140/435 family. Made from a durable composite gasket material designed to cope with heat, fuel and oil, it restores an airtight, leak-free joint between mating engine parts so the saw runs correctly. By preventing unwanted air, fuel or oil leaks, it helps maintain proper mixture, vacuum and compression for reliable starting, clean idling and consistent power. The gasket is a direct replacement to OEM No. 579 75 31-01 and fits precisely without modification on compatible Husqvarna machines, including the 135 and 140. It is suitable for routine maintenance or full rebuilds where old, hardened or damaged gaskets must be renewed to protect engine life and performance.
Key Features:
- Genuine Husqvarna OEM part for correct fit and specification
- Forms a secure seal to stop air, fuel and oil leaks that affect performance
- Helps maintain proper engine vacuum and tuning for easier starting and smooth running
- Fuel, oil and heat resistant composite material for long service life
- Designed to cope with vibration and thermal cycling in demanding use
- Accurate cut-outs and holes for straightforward alignment during fitting
- Installs with basic hand tools; no modifications required on listed models
- Suitable for preventative maintenance and engine rebuilds to reduce downtime
- Supports efficiency by preventing lean running that can cause wear
- Reliable sealing improves consistency across a wide range of operating conditions
Typical Applications:
Used during chainsaw engine service or overhaul to replace worn or damaged gaskets and restore proper sealing. Ideal when addressing hard starting, erratic idle, air leaks, or after dismantling components for cleaning, piston work or crank service. Helps maintain engine health in regular domestic, arborist, farm and site use.
Also known as:
Engine gasket, sealing gasket, chainsaw engine seal, casing gasket, motor gasket, replacement gasket, OEM engine seal.
Fits Models:
135, 135E, 140, 140E, 435, 435E, 435EII, 435II, 440E, 440EII, 440II, 445, 445E, 445EII, 445II, 450, 450EII, CS2245 S, CS2245S, GZ381
Alternate Part Numbers:
579 75 31-01, 579-75-31-01, 579753101
Product Specifications
| L&S Part No. | 579 75 31 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 578249601 |
| Unit of Sale | 1 |
| Applications | 135, 135E, 140, 140E, 435, 435E, 435EII, 435II, 440E, 440EII, 440II, 445, 445E, 445EII, 445II, 450, 450EII, CS2245 S, CS2245S, GZ381 |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 135 | 135E | 140E | 435 | 435E | 435EII | 435II | 440E | 440EII | 440II | 445 | 445E | 445EII | 445II | 450 | 450EII |
