Hipa 530058709 Air Purge Primer Bulb Pump for Husqvarna 125BT 128LD Echo SRM225 Stihl Poulan Craftman Weedeater Murray Bolen String Trimmer Blower Craftsman Hedge Trimmer Primer Bulb Pack of 5

What It Is

This is a pack of five air purge primer bulbs designed for small engine handheld equipment like string trimmers, leaf blowers, and hedge trimmers. The bulb manually pumps fuel into the carburetor to help start a cold engine faster.

Fitment & Compatibility

Before buying, verify your equipment’s make, model, and engine type. This part fits many Husqvarna (125BT, 128LD), Echo (SRM225), Stihl, Poulan, Craftsman, Weedeater, Murray, and Bolen models, plus some generic carburetors. Measure your existing bulb diameter (typically 1.5–2 cm) and check the inlet/outlet port alignment—these bulbs have two small tubes that must match your carburetor’s ports. Confirm your OEM part number (e.g., 530058709 for Husqvarna) to ensure a direct swap. Aftermarket replacement; not OEM.

Key Things to Know

• Quality: Made of flexible rubber; may feel slightly stiffer than OEM but works reliably. Replace all five bulbs if multiple tools share the same type.
• Installation: Easy—remove old bulb, snap in new one, ensure ports align, and check for air leaks. No special tools needed.
• Common gotcha: If the bulb doesn’t snap in tightly or feels loose, it may not seal properly, causing hard starting. Use a small zip tie or clamp if needed.
• Durability: Ethanol-resistant rubber; expect 1–3 seasons depending on sun exposure and fuel quality.

Should You Buy It

If you own multiple trimmers, blowers, or hedge trimmers from the brands listed, this five-pack is a cost-effective way to keep spares on hand and quickly restore cold-start functionality. It’s a smart buy for DIYers who want to avoid dealer trips for a simple, common wear part.