Standard Ignition SS-350 Starter Solenoid

Starter Solenoid for Mercedes-Benz 300SEL

Standard Ignition SS-350 is a 12-volt starter solenoid built for reliable starting performance in classic Mercedes-Benz applications. It is compatible with 1971-1973 Mercedes-Benz 300SEL models and uses a 3-terminal stud design with a female round connector and male terminals.

Key Features

• 12-volt starter solenoid for starting and charging system service
• Heavy-duty copper contacts help reduce arcing and support longer solenoid life
• More pure copper windings than found on most vehicles for a stronger magnetic field
• Polyester-insulated magnet wire, cadmium-plated copper discs, and solid contact bolts help reduce voltage drop
• Pure copper battery terminal studs help lower resistance in hot operating conditions
• Black and silver finish with aluminum and plastic construction
• 3 terminals, stud type, with included hardware

Detailed Description

The Standard Ignition SS-350 starter solenoid is engineered for dependable electrical transfer from the battery to the starter motor. Its copper contact design and high-purity copper windings help maintain current flow, reduce voltage drop, and improve resistance to electrical overload in demanding starting systems. This makes it a practical replacement for Mercedes-Benz 300SEL starting circuit service, especially when restoring consistent crank performance on 1971-1973 Mercedes-Benz 300SEL vehicles. This part cross-references Bosch 0331401003 and Standard Ignition SS1087 for the same application.

Common Issues It Can Help Address

• No-crank condition when the ignition key is turned
• Intermittent starter engagement
• Slow cranking caused by voltage loss in the starting circuit
• Starter click without full motor engagement
• Electrical resistance at worn solenoid contacts or terminals

Installation Notes and Tips

Verify the vehicle uses a 12-volt starting system and confirm terminal layout before installation. Inspect battery cables, starter connections, and ground points for corrosion or looseness, since poor connections can mimic solenoid failure. For 1971-1973 Mercedes-Benz 300SEL service, match the original connector style and terminal count to ensure proper fitment.

Quality Assurance

Standard Ignition manufactures starting and charging system components with controlled production from component selection through final assembly. The SS-350 uses high-grade materials intended to support extended service life in electrical starting applications.