137-4100 Ignition Switch (4DW) – Genuine Toro OEM Part The 137-4100 Ignition Switch (4DW) is a genuine Toro OEM ignition switch designed to control engine starting and electrical power functions on Toro lawn and turf equipment. Manufactured to Toro’s original equipment specifications, this switch ensures reliable electrical contact, smooth key operation, and dependable engine start performance. Ignition switches are critical components in the electrical system, allowing the operator to start and stop the engine while managing power to accessories and safety circuits. The 137-4100 switch is built for durability and consistent operation in commercial and residential mowing environments. Product Details Part Number: 137-4100 Brand: Toro Part Name: Switch-Ignition Reference Code: 4DW Part Type: Ignition Switch Function: Controls engine start and electrical power Condition: New, Genuine Toro OEM Compatibility This ignition switch is designed for use on Toro lawn and turf equipment that specifies Toro part number 137-4100. It is commonly installed on Toro commercial and residential mowers equipped with keyed ignition systems. Applications Toro commercial lawn mowers Toro residential mowing equipment Toro zero-turn, stand-on, and walk-behind mowers Engine electrical and starting systems The 137-4100 Toro Ignition Switch delivers OEM-correct fit and reliable electrical performance, making it the proper replacement for maintaining safe and dependable operation of Toro equipment.
