Description
Overview:
This is a Genuine Husqvarna gasket, part number 503 77 59-01, designed to create a tight, reliable seal between mating engine components on Husqvarna chainsaws. Made from a durable, fuel- and heat-resistant composite gasket material, it maintains compression and crankcase integrity under continuous use. By preventing air, fuel, and oil leaks, it helps the engine start reliably, idle steadily, and deliver consistent power. Built to OEM tolerances, it fits precisely without trimming or modification, supporting quick, clean refits. Suitable for professional and domestic users, it is ideal for routine servicing or engine rebuilds on models such as the Husqvarna 362 and 365. As a Genuine Part, it offers assured compatibility, performance, and longevity in demanding cutting environments.
Key Features:
- Genuine Husqvarna OEM part for exact fit and dependable performance
- Forms a secure seal to protect compression and crankcase vacuum
- Helps prevent air leaks that can cause lean running and engine damage
- Durable, fuel-, oil-, and heat-resistant composite for long service life
- Accurate cut-outs and bolt pattern for straightforward installation
- Supports stable idle, smooth acceleration, and consistent cutting power
- Suitable for heavy-duty jobsite use and regular maintenance at home
- Compatible with a wide range of mid- to large-size Husqvarna chainsaws
Typical Applications:
Used during top-end rebuilds, cylinder removal, or whenever a gasket shows wear, damage, or leakage. Ideal when diagnosing air leaks, restoring lost compression, or after accidental overheat events. Fit as part of preventative maintenance to keep professional and DIY chainsaws running efficiently, with clean sealing surfaces and correct fastener torque.
Also known as:
Engine gasket, chainsaw engine seal, cylinder base gasket, crankcase gasket, sealing gasket, motor seal, paper gasket.
Fits Models:
362, 362XP, 365, 365 X-Torq, 365H, 371K, 371XP, 372XP, 372XP X-Torq, 375K, 385, 385XP, 390XP
Alternate Part Numbers:
503 77 59-01, 503775901
Product Specifications
| L&S Part No. | 503 77 59 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503775901 |
| Unit of Sale | 1 |
| Applications | 362, 362XP, 365, 365 X-Torq, 365H, 371K, 371XP, 372XP, 372XP X-Torq, 375K, 385, 385XP, 390XP |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 362 | 362XP | 365 | 365H | 365X-TORQ | 371XP | 372XP | 372XP X-TORQ | 385 | 385XP | 390XP | 371K | 375K |
