Replacement Part Number: Replace Part Number:117-2221, 430-120, 137-4100, 1374100, 1172221. Compatible with Serial No. 920,000 and higher, Exmark Lazer Z and Next Lazer Z models. It also fits Toro Most Z Master 2010 and newer, TimeCutter ZS and SS series, and Titan zero-turn mowers. 3 Position 5 terminals: This lawn mower ignition switch features 3 position (With Headlight Control Setting) with 5 terminals. Its plug-and-play design ensures a straightforward and hassle-free installation process, allowing you to get your riding mower up and running quickly. Durable and Reliable Construction: Made from ABS material, this ignition switch is built to last. The included key comes with a dust cover, ensuring dust and waterproof protection for the keyhole, which enhances the longevity of your 137-4100 ignition switch. Easy Installation: With its plug-and-play design, replacing your 117-2221 ignition switch is easy. Unplug the wire connector, remove the old switch, and install the new one by pushing it into place until the tabs click. The whole process takes just a few minutes, saving you time and effort. Package List: Package includes 1* ignition switch, 2* keys, 1* key rings. Compatible with Toro