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Walbro Idle / Low Speed Needle Spring

Part Number: 98-404
Online Price: $0.53
Walbro 98-404 Idle / Low Speed Needle Spring – Fits WA55 Diaphragm Carburetors
Availability: In Stock.

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Description

98-404 Walbro Idle / Low Speed Needle Spring – For WA55 Diaphragm Carburetors


The Walbro 98-404 Idle / Low Speed Needle Spring is a genuine OEM replacement part designed specifically for Walbro WA55 diaphragm carburetors and compatible models. This spring provides the correct tension to the low-speed needle, helping maintain stable idle performance and precise fuel metering at low RPMs.


Whether you're rebuilding your carburetor or fine-tuning your small engine, this spring plays a critical role in ensuring smooth and reliable operation. Don’t compromise performance with worn or weak components—trust Walbro for original-quality fit and function.


Features & Benefits:

  • Genuine Walbro Part – Engineered to original specs for WA-series carburetors
  • Precise Tension – Maintains accurate adjustment of the idle/low-speed fuel needle.
  • Improves Idle Stability – Helps prevent surging, hesitation, and rough idle
  • Ideal for Rebuilds – Essential component when servicing or rebuilding WA55 carbs


Compatibility:

  • Specifically designed for Walbro WA55 and other select WA-series diaphragm carburetors
  • Fits various 2-stroke engines used in small handheld equipment, karting engines, and more

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