HUSWELL One Size Primer Bulb for Echo, Stihl, Husqvarna, Troy-Bilt & Zama | Replacement Carburetor Bulb

Versatile replacement for busy workshops

The HUSWELL One Size Primer Bulb is designed to serve a wide range of small-engine carburetors, offering a practical, ready-to-use replacement. Rather than sourcing multiple model-specific parts, this single bulb aims to simplify maintenance across compatible brands and common engine families.

Whether you’re refreshing seasonal equipment or stocking your shop for quick fixes, this primer bulb helps you get engines primed and ready to start again. It’s built to slot into many carburetor layouts, supporting a smoother priming action when you pull the starter cord on gas-powered tools and machines around the yard.

Compatibility at a glance

The bulb is designed to fit a broad spectrum of engines and carburetors, including models from Echo, Stihl, Husqvarna, Poulan, Ryobi, Remington, Craftsman, MTD, and Murray, alongside many other popular brands. The listed ranges cover carburetor families and specific model numbers such as BG45, BG46, BG55, BG56, BG65, BG66, BG75, BG85, BG86, FR130, FR135, FR85, FS100, FS110, FS130, FS310, FS38, FS40, FS45, FS46, FS50, FS55, FS56, FS170, FS175, FS80, FS85, FS87, FS90, FT100, HL100, HL45, HL75, HL90, HL95, HS45, HS75, HS80, HS81, HS85, HS86, and more.

In short, it’s a broadly compatible solution designed to cover a variety of engines used in hobbyist and professional settings.

What it can help with

• Offers a practical replacement when the original primer bulb shows wear or cracking.
• Supports quicker priming and potentially easier starts on compatible engines.
• Serves as a convenient, single-size option to reduce the need for multiple part numbers.

Installation and care tips

• Inspect the surrounding gasket and connections for wear before replacing.
• Keep the seating area clean to maintain an effective seal and proper priming.
• Handle the bulb carefully during installation to avoid damaging the part or adjacent components.

For best results, compare the listed part numbers and model ranges in the product details with your equipment’s carburetor layout. This approach helps ensure a fit for seasons of use and reduces downtime when maintenance is needed.