Description
Overview:
This Impulse Hose is a genuine Husqvarna component for mid-range chainsaws, including the 455E and 461. Manufactured from a fuel- and oil-resistant rubber compound, it links the crankcase impulse port to the carburettor to drive the fuel pump, helping to maintain steady fuel delivery and consistent engine performance. As an OEM replacement (OEM No. 503 40 06-10, MPN 503400610), it is built to match the original dimensions and flexibility, ensuring an airtight connection that resists vibration and heat. A sound impulse line helps prevent air leaks that cause hard starting, erratic idling, or lean running. Designed for direct replacement during servicing, this hose keeps your Husqvarna chainsaw operating reliably under regular use and demanding cutting conditions.
Key Features:
- Genuine Husqvarna OEM part for assured fit and compatibility
- Fuel- and oil-resistant rubber for long service life
- Maintains a tight, leak-free connection between crankcase and carburettor
- Correct internal bore and length for specified models to preserve pulse strength
- Flexible and kink-resistant to handle engine movement and vibration
- Withstands heat and regular exposure to petrol/oil mix
- Helps restore stable idle, clean acceleration, and reliable starting
- Simple push-fit replacement with no special tools required
- Suitable for routine maintenance or fault rectification (split or perished hoses)
- OEM references: 503 40 06-10, 503400610
Typical Applications:
Used during routine servicing or repairs when addressing fuel delivery issues, air leaks, or hard starting on Husqvarna chainsaws. Commonly replaced alongside carburettor work, crankcase sealing tasks, or when a split impulse line causes poor idle and throttle response. Suitable for general felling, snedding, and firewood cutting where dependable engine performance is required.
Also known as:
Impulse line, impulse pipe, carburettor impulse hose, vacuum pulse hose, engine pulse tube, saw impulse pipe, crankcase pulse line.
Fits Models:
455 Rancher, 455E, 460, 461
Alternate Part Numbers:
503 40 06-10, 503400610
Product Specifications
| L&S Part No. | 503 40 06 10 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503400610 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Key Features | - Genuine Husqvarna OEM part for 455E and 461 chainsaws - Fuel- and oil-resistant rubber compound - Maintains leak-free connection between crankcase and carburettor - Correct internal bore and length for specified models - Flexible and kink-resistant to handle engine movement |
| Fits Models | 455E | 455 RANCHER | 460 | 461 |
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