Standard Ignition SS-345 Starter Solenoid

Starter Solenoid for Mercedes-Benz, Porsche, Audi, and Volkswagen

Standard Ignition SS-345 is a 12-volt starter solenoid built with a black and silver aluminum and plastic finish. It uses a screw-type terminal design with two male terminals and a 3/8 thread size for direct starter circuit control on supported applications.

Use this Standard Ignition SS-345 starter solenoid when servicing select Mercedes-Benz 560SL, 380SE, 380SL, 500SEC, 500SEL, 380SEC, 380SEL, and 380SLC applications, along with certain Porsche 924, Audi 4000, and Volkswagen Quantum models.

Key Features

• 12-volt starter solenoid for electrical, charging, and starting systems
• Black and silver aluminum and plastic construction
• Two male screw terminals for starter circuit connections
• 3/8 thread size with a compact 2.04-inch overall length
• Standard Ignition SS-345 replacement part number for catalog matching

Detailed Description

The Standard Ignition SS-345 is a starter solenoid designed for select European vehicle applications that require a 12-volt, screw-terminal solenoid with a compact housing. Its aluminum and plastic construction, male terminal layout, and 3/8 thread size support straightforward replacement in starter system service where the original unit matches these specifications. This part cross-references Bosch 0331302053 for the same application.

Vehicle coverage includes 1986-1989 Mercedes-Benz 560SL, 1984-1985 Mercedes-Benz 380SE, 1981-1985 Mercedes-Benz 380SL, 1984-1985 Mercedes-Benz 500SEC, 1984-1985 Mercedes-Benz 500SEL, 1982-1983 Mercedes-Benz 380SEC, 1981-1983 Mercedes-Benz 380SEL, 1981 Mercedes-Benz 380SLC, 1977-1982 Porsche 924, 1981 and 1980 Audi 4000, and 1982-1983 Volkswagen Quantum.

What It Helps Address

• No-crank condition caused by a failed starter solenoid
• Intermittent starter engagement during ignition start-up
• Electrical switching issues in the starter circuit
• Starter response problems on select Mercedes-Benz, Porsche, Audi, and Volkswagen models
• Replacement needs for a worn or heat-damaged solenoid assembly

Installation Notes and Tips

Verify the vehicle’s make, model, engine, and original solenoid specifications before ordering. Confirm terminal style, thread size, and mounting layout against the existing part, since this unit has no connector quantity, mounting bracket, or hardware included. For best results, inspect starter cables, terminals, and related ignition components during installation.

Quality Assurance

Standard Ignition parts are cataloged for direct replacement use in electrical and starting system service. SS-345 is listed with defined physical and electrical specifications to support accurate part matching for the covered applications.