Bosch SR9523X Starter Motor

Bosch Remanufactured Starter for BMW

Bosch SR9523X is a remanufactured 12-volt starter built for BMW applications that need reliable cranking performance and OE-style fitment. It features a 1.6 power rating, clockwise rotation, a closed aluminum nose cone, and an attached solenoid for direct replacement service.

Designed for BMW 650i, 650i xDrive, M6, X5, X6, 550i, 750i, and M5 applications, this Bosch starter supports a wide range of late-model V8 and performance platforms. Bosch Premium Starters are engineered, built, and tested for consistent starting performance and dependable operation.

Key Features

• 12-volt remanufactured starter for BMW starting systems
• Part number SR9523X for direct catalog lookup
• 1.6 power rating for strong cranking output
• Clockwise starter rotation
• Closed nose design with aluminum nose cone and aluminum finish
• Solenoid attached for streamlined replacement
• 10-tooth drive configuration
• 2 mounting bolt holes for OE-style installation

Detailed Description

Bosch SR9523X is a remanufactured starter assembly intended for BMW vehicles that require a 12V, clockwise-rotation unit with a closed nose configuration. The aluminum nose cone and aluminum finish support durability in demanding engine-bay conditions, while the attached solenoid simplifies the replacement process. If you are searching for a Bosch starter for BMW 650i Gran Coupe, BMW M6, or BMW X5 applications, SR9523X is built to match the listed OE-style fitment and electrical requirements.

This part cross-references Bosch OE numbers 12417612815 and 12417618620 for the same application.

Vehicle Fitment

• Fits 2013-2019 BMW 650i Gran Coupe, N/A
• Fits 2013-2019 BMW 650i xDrive Gran Coupe, N/A
• Fits 2014-2019 BMW M6 Gran Coupe, N/A
• Fits 2015-2019 BMW X6, N/A
• Fits 2016-2018 BMW 650i, N/A
• Fits 2013-2014 BMW 650i, N/A
• Fits 2016-2018 BMW 650i xDrive, N/A
• Fits 2013-2014 BMW 650i xDrive, N/A
• Fits 2012-2018 BMW M6, N/A
• Fits 2014-2018 BMW X5, N/A
• Fits 2013-2017 BMW 550i GT xDrive, N/A
• Fits 2014-2016 BMW 550i, N/A
• Fits 2014-2016 BMW 550i xDrive, N/A
• Fits 2013-2016 BMW M5, N/A
• Fits 2013-2015 BMW 550i GT, N/A
• Fits 2013-2015 BMW 750i, N/A
• Fits 2013-2015 BMW 750i xDrive, N/A
• Fits 2013-2015 BMW 750Li, N/A
• Fits 2013-2015 BMW 750Li xDrive, N/A

Common Replacement Uses

• Restores engine cranking when the original starter no longer engages consistently
• Addresses slow-start or no-start conditions caused by starter wear
• Replaces a failed solenoid or worn internal starter components
• Supports BMW starting-system repairs on 650i, M6, X5, X6, 550i, 750i, and M5 models
• Helps resolve intermittent starting complaints tied to aging electrical components

Installation Notes and Quality

Verify the vehicle’s year, model, and OE part number before installation. Confirm the 12-volt system, clockwise rotation, 10-tooth drive, and 2-bolt mounting configuration match the original unit. Mounting hardware and shims are not included, so reuse or source the correct vehicle-specific hardware as needed.

Bosch Premium Starters are built and tested to meet demanding starting-system requirements, and SR9523X is remanufactured to provide a dependable OE-style replacement for BMW applications.