The TCI 351125 is a replacement starter solenoid for selected TCI racing starters. It is built as a direct replacement for TCI starter numbers 351100, 351300, 351600, 351309, and 351109, and it is responsible for engaging the starter drive and sending power to the starter motor.

The heavy-duty solenoid uses a contact disc instead of a bar-type contact, helping deliver more consistent starts. For builds already using compatible TCI racing starters, this part gives a focused replacement path without changing the full starter assembly.

This solenoid does not include hardware or a wiring harness, so those items should be reused or sourced separately as needed. Compatibility should be confirmed against the listed TCI starter numbers before purchase. Warranty coverage is limited to 30 days for racing use and 90 days for street or strip use.