The term Zama 57003 typically refers to a Primer Bulb (also known as 0057003) for small engines. However, in some tool catalogs, the number 57003 is also associated with a popular plumbing wrench. Zama 57003 Primer Bulb The Zama 0057003 Primer Bulb is a small, clear rubber pump used to draw fuel into the carburetor for easier starting. It is an essential maintenance part for handheld 2-cycle equipment like trimmers, blowers, and chainsaws. Compatibility: Designed to fit Zama C1U and C1Q series carburetors. Common Brands: Found on equipment from Echo, Homelite, Ryobi, and Husqvarna. Dimensions: Approximately 23mm (base width) and…