Bosch SR0504N Starter

Bosch Starter SR0504N for Mercedes-Benz Diesel Applications

Bosch SR0504N is a new 12-volt starter built for direct replacement use in select Mercedes-Benz diesel vehicles. It combines a 1.8 kW power rating with a clockwise rotation, 13-tooth drive, and attached solenoid for dependable cranking performance.

Compatible with 2014-2016 Mercedes-Benz E250, 2015 Mercedes-Benz ML250, and 2016-2017 Mercedes-Benz GLE300d, this Bosch starter supports OE-style fitment for common no-start and slow-crank repair needs.

Key Features

• Brand: Bosch Starter (New)
• Part number: SR0504N
• 12-volt electrical system
• 1.8 kW power rating
• Clockwise starter rotation
• 13-tooth drive gear
• Closed nose design with aluminum nose cone
• Aluminum starter finish
• Solenoid attached
• Two mounting bolt holes
• New, not remanufactured
• OE recommendation: Yes

Product Details

Bosch Premium Starters are engineered, built, and tested for performance and reliability in demanding starting-system service. The SR0504N follows that approach with a compact 9.448819-inch length, closed nose construction, and aluminum components that support consistent engagement and durable operation. This part cross-references 6519062800 for the same application.

For Mercedes-Benz E250, ML250, and GLE300d diesel models, the SR0504N is a direct-fit starter choice when the original unit shows wear, intermittent engagement, or reduced cranking speed. The attached solenoid simplifies replacement by matching the starter assembly configuration used in these applications.

Common Problems This Starter Can Address

• Engine cranks slowly during startup
• Starter clicks but does not engage consistently
• No-crank condition caused by starter wear
• Intermittent starting after repeated key cycles
• Starter drive or solenoid failure in diesel starting systems

Installation Notes and Tips

Verify the vehicle’s original starter configuration before installation, including 12-volt system requirements, clockwise rotation, 13-tooth drive count, and two-bolt mounting pattern. Mounting hardware and shims are not included, so reuse or source the correct fasteners as needed. Confirm electrical connections are clean and secure, and inspect the battery and charging system before replacing the starter.

Fits 2014-2016 Mercedes-Benz E250, N/A; Fits 2015 Mercedes-Benz ML250, N/A; Fits 2016-2017 Mercedes-Benz GLE300d, N/A.

Quality Assurance

Bosch positions this starter as a premium new replacement built and tested for reliable service. The SR0504N is an OE-recommended part, making it a strong choice for owners and technicians looking for a Bosch starter for Mercedes-Benz E250, ML250, or GLE300d diesel applications.