Replace a worn temperature-sensing switch with the Standard Ignition Thermal Limiter Switch, part number TLS-1, a unit that is 100% tested for mechanical and electrical switching. It fits many vehicles, among them the 1971-1977 Chevrolet Impala, 1975 Chevrolet Malibu and 1971-1977 Chevrolet Camaro. See the Buyer's Guide tab for the full list and engine details.
This part is listed under two names, Thermal Limiter Switch and Distributor Thermal Vacuum Switch. It is a temperature-responsive switch designed to open or close the circuit it serves as temperature changes. Standard describes itself as a global manufacturer of original equipment ignition products and backs this switch with the following features:
- Copper alloy conductors: provide strong electrical conductivity with low resistive losses.
- 100% tested: every unit is checked for both mechanical and electrical switching performance.
- Controlled production: quality control is kept in-house from individual components through to the finished switch.
- Robust design: built from high-grade materials to meet the demands of professional technicians, drawing on decades of research and development.
Signs this part may need replacing: the switch fails to change state at temperature, shows an open or shorted circuit on a continuity check, or is visibly damaged. Diagnose the cause before replacing. If a failed thermal limiter switch is the problem, the TLS-1 replaces it as a direct-fit replacement for the listed applications.
Interchange: TL2 · 231769 · 6551258 · 6556440
This part cross-references / interchanges with the following part numbers:
TL2, 231769, 6551258, 6556440
