Bosch SR45X Starter Motor

Bosch SR45X Remanufactured Starter

The Bosch SR45X is a remanufactured 12-volt starter built for dependable cranking performance in select Mercedes-Benz applications. It features a clockwise rotation, a closed aluminum nose cone, and an attached solenoid for a direct replacement-style setup.

Key Features

• 12-volt starter with 1.1 power rating
• Remanufactured Bosch starter with OE recommendation
• Clockwise starter rotation
• Closed nose design with aluminum nose cone and aluminum finish
• Solenoid attached for streamlined replacement
• 10-tooth drive gear
• 2 mounting bolt holes

Product Details

Bosch Starter (Remanufactured) SR45X is part of Bosch Premium Starters, a product line engineered, assembled, and tested for consistent starting performance and reliability. This starter is built for Mercedes-Benz 190E, 300E, 300SL, 300TE, 300CE, 300SE, 300SEL, and 260E applications, including long-tail searches such as a remanufactured starter for 1987-1993 Mercedes-Benz 190E or a Bosch starter for 1986-1993 Mercedes-Benz 300E. This part cross-references Bosch 0031515001 for the same application.

What It Helps Address

• Slow or weak engine cranking
• No-start conditions caused by starter failure
• Intermittent starter engagement
• Grinding or inconsistent starter drive operation
• Electrical starting issues in Mercedes-Benz 190E and 300E platforms

Installation Notes and Tips

Verify 12-volt system requirements, clockwise rotation, 10-tooth drive engagement, and the 2-bolt mounting pattern before installation. This starter is listed with no mounting hardware and no shims included, so reuse or source the correct vehicle-specific hardware as needed. Confirm the OE-style fitment against the vehicle’s original starter configuration before final assembly.

Quality Assurance

Bosch remanufactured starters are built and tested to meet OE-referenced application standards. The SR45X is an OE-recommended replacement for select Mercedes-Benz starting systems and is backed by Bosch’s remanufactured product quality controls.