Upgrade your vehicle's ignition system with the Standard Motor Products Starter Switch/Solenoid SS-566, a top-quality replacement part designed for a precise fit in your 1956-61 Desoto, Dodge, or Plymouth. Engineered for reliability, this solenoid ensures efficient performance and longevity, mirroring the quality of OEM parts but at an affordable price. The switch is easily identifiable in the engine bay, thanks to its strategic placement, and features a sleek black finish that complements your engine's aesthetics. With the OE/OEM part number SS-566, you can be confident in your selection for maintaining the integrity and functionality of your vehicle's ignition system.