This Briggs & Stratton® Worm Gear transfers motion within the mechanism and is shaped for the original gear train or drive setup.
It is a solid replacement when wear on the teeth or hub starts to affect operation. For service work, it helps to confirm the model and type numbers before placing the order.
Not sure if 503557501 is the right Briggs & Stratton® part for your model? Search your part or engine model number in our Briggs & Stratton® Parts Lookup Tool.
Order online across Canada or visit us in store in Calgary, Alberta.
BRIGGS & STRATTON
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✅ Huge in-house inventory in Canada
✅ Experienced shipping team
✅ Split shipping available if needed**
✅ Most backorders filled within a week
✅ Everything shipped directly from Canada
* Full engines are excluded from flat rate shipping.
** Splitting shipments will incur additional shipping charges.
Our in-house customer support team is available during business hours to help you find the right part and to answer questions about products, orders, and more.
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