One Size Primer Bulb for Echo Stihl Husqvarna Troy Bilt Zama Homelite Pouland 561635001 A01195A 0058001 12538108660 0057003 0057004 Primer Bulb

What It Is

This is a universal replacement primer bulb for small engines, designed to fit most handheld and walk-behind lawn equipment from Echo, Stihl, Husqvarna, Troy-Bilt, Zama, Homelite, and Poulan. It primes the carburetor with fuel for easier starting.

Fitment & Compatibility

Before buying, measure your old bulb’s diameter and stem length—this “one size” fits many, but not all. Common OEM cross-references include 561635001, A01195A, 0058001, 12538108660, 0057003, and 0057004. It works with most Zama and Walbro carburetors on trimmers, blowers, chainsaws, and mowers. Check that your primer bulb is push-in (not screw-in) and that the grommet or retainer ring is intact—this bulb does not include those. Not compatible with Briggs & Stratton or Kohler engines.

Key Things to Know

• Quality is on par with OEM for most brands; some users report slightly softer rubber than original, but it seals fine.
• Installation is easy: remove the old bulb, clean the carburetor cavity, and press the new one in until it seats. No tools needed.
• Common gotcha: if your old bulb is cracked or sticky, the carburetor grommet may also be brittle—replace it at the same time to avoid air leaks.
• Works best on small engines under 200cc; larger engines may need a different size.

Should You Buy It

Buy this if you need a quick, cheap fix for a non-starting trimmer, blower, or chainsaw with a standard push-in primer bulb. It’s a solid value for the price, but skip it if your equipment uses a screw-in bulb or if you need a complete primer assembly with grommet.