Description
Overview:
This Tank Cap is a Genuine Husqvarna part for selected petrol and battery chainsaws, including the 550 XP and 545. It is an original equipment (OE) component engineered to provide a secure, leak‐resistant seal on the fuel tank, helping maintain safe operation and consistent performance. The cap is made from a tough, fuel‐resistant polymer in a black finish, with a precision moulded body and integrated rubber seal to withstand vibration, weather, and regular use on site or in the garden. Designed to the correct specification for Husqvarna filler necks, it restores proper sealing when the original cap is worn, cracked, or missing. OE No. 577 87 86-03; Manufacturer Part Number (MPN): 577878603. Genuine Part for reliable fit and longevity.
Key Features:
- Genuine Husqvarna OEM component for assured compatibility and fit
- OE No. 577 87 86-03; MPN: 577878603
- Fuel‐resistant construction and quality rubber seal to minimise leaks and spills
- Durable design to handle daily professional use, vibration, and weather exposure
- Helps maintain safe operation by securing the tank during cutting and transport
- Precision fit for the intended filler necks to reduce cross‐threading and misalignment
- Tool‐free replacement in most cases for quick maintenance turnaround
- Suitable for a broad range of Husqvarna chainsaws and pole saws listed below
- Replaces earlier superseded numbers for straightforward part identification
- Supports routine servicing and compliance with good fuel handling practices
Typical Applications:
Used to replace damaged, worn, or lost fuel caps on compatible Husqvarna chainsaws and pole saws. Suitable for forestry, arborist climbing work, landscaping, grounds maintenance, and domestic cutting tasks where a secure, reliable tank seal is required to prevent fuel leakage during operation and transport.
Also known as:
Petrol cap, fuel cap, fuel filler cap, tank lid, filler cap, reservoir cap, chainsaw fuel cover.
Fits Models:
327PT5S, 330iKP, 340, 439, 525PT5S, 530iP4, 530iPT5, 530iPX, 536LiP4, 536LiPT5, 536LiPX, 545, 550 XP, 550XP, 550XPG, Echo CS-2511TES, T435, T525, T540, T540XP, T540XPII
Alternate Part Numbers:
577 87 86-03, 577 87 86-01, 5778786-01, 5778786-03, 577878603, 577878601
Product Specifications
| L&S Part No. | 577 87 86 03 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 577878603 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws |
| Fits Brands | Echo, Husqvarna |
| Key Features | - Genuine Husqvarna OEM component for assured compatibility and fit - Fuel‐resistant polymer with integrated rubber seal - Precision fit for Husqvarna filler necks - Suitable for various Husqvarna chainsaws and pole saws - Tool‐free replacement for quick maintenance turnaround |
| Fits Models | 340 | 327PT5S | 525PT5S | 536LiP4 | 536LiPT5 | 536LiPX | 439 | 545 | 550XP, 550XPG | T435 | T525 | T540XP | T540XPII | 530iPT5 | 330iKP | 530iP4 | 530iPX |
