Missiscily 503936601 Primer Bulb for Husqvarna Chainsaws | 435/435E/440/445/450 Series

Premium primer bulb replacement for Husqvarna and compatible brands

The Missiscily 503936601 Primer Bulb is designed as a direct replacement for chainsaw carburetor priming. It fits Husqvarna models 435, 435E, 440, 440E, 445, 445E, 450, and 450E, helping ensure reliable priming during starts and warm-ups. The bulb is built to match the compact form and seal of the original part, supporting steady fuel flow when you prime the carburetor.

Beyond Husqvarna, this primer bulb lists broad compatibility, including brands and retailers such as McCulloch, WALBRO, Ryobi, Poulan, Stens, Rotary, ZAMA, STIHL, Craftsman, and MTD. This versatility makes it a practical option for maintenance shops or DIY projects where a single replacement covers multiple machines.

Key benefits

• Direct replacement for select Husqvarna models with a precise fit
• May improve priming action, supporting easier starting in various conditions
• Broad cross-brand compatibility for carburetors
• Compact, durable design intended to seal well and resist vibration

What you get and how it helps

This 503936601 primer bulb is a ready-to-install part that supports routine maintenance and quick swaps when an original is worn. In practice, owners report smoother priming and more consistent starts after replacement, especially after storage or in cooler weather.

• Compatibility with Husqvarna 435/435E/440/440E/445/445E/450/450E
• Compatibility with major carburetor brands, expanding repair options

Note: This description reflects listed compatibility and typical use cases. Actual results depend on the overall carburetor condition and proper installation.