Bosch SR0446X Starter Motor

Bosch SR0446X Starter for BMW V8 Applications

The Bosch SR0446X is a remanufactured 12-volt starter built for BMW applications that need dependable cranking performance. It is an OE-recommended replacement with a clockwise rotation, integrated solenoid, and aluminum nose cone construction.

Use this Bosch starter for BMW 540i, 740i, 740iL, 530i, 840Ci, M5, X5, and Z8 applications where the original starter matches the listed fitment.

Key Features

• 12-volt remanufactured starter for starting-system repair
• 1.7 power rating for OE-style cranking output
• Clockwise starter rotation
• Integrated solenoid attached
• Aluminum nose cone and aluminum finish
• Closed nose design with 2 mounting bolt holes
• 9-tooth drive configuration
• OE recommendation for listed BMW applications

Product Details

Bosch Starter (Remanufactured) SR0446X is part of Bosch’s premium starter line, which is built and tested for consistent starting performance and reliability. This remanufactured unit is designed for direct replacement use on select BMW models, including 1994-1995 BMW 540i, 1993-1995 BMW 740i, 1993-2001 BMW 740iL, 1994-1997 BMW 840Ci, 1994-1995 BMW 530i, 1997-2003 BMW 540i, 1997-2001 BMW 740i, 2000-2003 BMW M5, 2000-2003 BMW X5, and 2000-2003 BMW Z8. This part cross-references BMW 12411729981 for the same application.

Common Starting Issues It Can Address

• Slow or weak engine cranking
• No-crank condition with a charged battery
• Intermittent starter engagement
• Grinding or inconsistent starter drive operation
• Starting-system failure caused by worn internal starter components

Installation Notes and Tips

Verify the vehicle’s original starter configuration before installation, including 12-volt system requirements, clockwise rotation, 2-bolt mounting, closed nose design, and 9-tooth drive count. Compare the existing unit to the Bosch SR0446X and confirm the BMW part number reference when ordering for 540i, 740i, 740iL, 840Ci, 530i, M5, X5, or Z8 applications. Mounting hardware and shims are not included.

Quality Assurance

Bosch remanufactured starters are built, inspected, and tested to support reliable operation in demanding starting-system applications. The SR0446X is an OE-recommended replacement for the listed BMW fitments and is backed by Bosch’s remanufactured product standards.