Description
Overview:
This Impulse Hose is a genuine Stihl OEM part (MPN 1128 141 8600) designed for professional and domestic Stihl chainsaws, including the MS 440 and MS 460. It is a flexible, fuel- and oil-resistant rubber hose that links the crankcase impulse port to the carburettor. By carrying the pressure pulses that drive the carburettor's diaphragm fuel pump, it helps maintain stable fuel delivery, smooth idling, and clean acceleration under load. Built to match the original routing and connection points, it offers a precise fit that helps prevent air leaks and ensures reliable starting and performance. Durable construction suits frequent use in tough environments such as forestry, arborist work, and site cutting.
Key Features:
- Genuine Stihl part for assured compatibility and reliability
- Correct length and internal bore to maintain a strong impulse signal
- Fuel-, oil-, and heat-resistant rubber suitable for typical UK pump fuels
- Helps cure air leaks that cause hard starting, erratic idle, or lean running
- Moulded ends provide a snug, leak-resistant connection to ports and carburettor
- Supports consistent fuel metering for smoother acceleration and cutting performance
- Robust design for vibration and abrasion resistance in demanding conditions
- Straightforward replacement during servicing or carburettor overhaul
- Matches OEM routing to avoid kinks and premature wear
- Suitable for regular maintenance to protect engine life and efficiency
Typical Applications:
Used during servicing or repairs when addressing air leaks, poor idle, stalling, or hesitation on throttle. Commonly replaced alongside carburettor service parts, intake boot, and fuel lines on working saws in forestry, landscaping, arboriculture, and construction cutting. Suitable for heavy-duty cutting tasks where reliable fuel delivery and engine response are essential.
Also known as:
Impulse line, pulse line, vacuum line, carburettor impulse hose, carb pump line, impulse tube, vacuum hose, pulse hose, crankcase impulse pipe.
Fits Models:
044, 046, GS 461, MS 440, MS 460, MS 461
Alternate Part Numbers:
1128-141-8600, 11281418600
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