4-Pack 0057003 0057004 Carburetor Primer Bulb Replacement for Homelite Echo Stihl Robi Zama Primer Pouland 561635001 A01195A 0058001 12538108660

What It Is

This is a 4-pack of replacement primer bulbs for small engines, designed to purge air from the carburetor and draw fuel into the system before starting. Common on handheld trimmers, blowers, chainsaws, and some lawn mowers from Homelite, Echo, Stihl, Poulan, and other brands using Zama or similar carburetors.

Fitment & Compatibility

• Cross-reference numbers: Compatible with OEM part numbers 0057003, 0057004, 0058001, 561635001, A01195A, 12538108660 – but always verify your specific model before ordering.
• Physical check: Measure the bulb diameter (typically ~0.5–0.6 inches) and the nipple/port size (usually 3/16" or 1/4"). The bulb must match both the carburetor housing recess and the fuel line fitting.
• Brand coverage: Works on many Homelite, Echo, Stihl, Poulan, Ryobi, and Zama-equipped engines, but not universal – some Stihl models use different bulb shapes or retainer clips.
• Kit contents: 4 bulbs plus 4 retaining clips. No fuel line or gaskets included – you may need those separately.

Key Things to Know

• Quality: Aftermarket bulbs are slightly stiffer than OEM, but most users report good sealing and durability. Expect 2–3 seasons of regular use.
• Installation difficulty: Easy (5-minute job). Use a small flathead screwdriver to pry out the old bulb, press the new one in, and secure with the included clip. No special tools needed.
• Common gotcha: If the new bulb doesn’t snap in firmly or feels loose, the carburetor housing may be worn – replace the entire carburetor instead.
• Check for cracks: Old bulbs often leak fuel from hairline cracks. If you smell gas or see fuel weeping around the bulb, replace it immediately.

Should You Buy It

Buy this if you have a Homelite, Echo, or Poulan handheld with a failing primer bulb and want a cheap, fast fix. It’s not for Stihl or Husqvarna models with proprietary bulb designs, and it won’t fix a clogged carburetor or bad fuel line. For $5.29, it’s a no-brainer if your bulb matches.