MPA Electrical 17923 Starter Motor

Remanufactured Starter for BMW V8 Applications

MPA Electrical Part Number 17923 is a remanufactured 12-volt starter built for select BMW applications with a permanent magnet gear reduction design. It uses a 1.4 kW Bosch-style configuration with clockwise rotation and a 9-tooth drive for direct-fit replacement in the listed vehicles.

Compatible With BMW 550i, 650i, X5, 750Li, 750i, 545i, 645Ci, 745i, and 745Li applications across the model years shown below. This starter is also identified by part number 17923 for cross-reference and catalog matching.

Key Features

• Remanufactured starter from MPA Electrical
• Permanent magnet gear reduction design for compact, high-torque starting performance
• 1.4 kW rating
• 12-volt electrical system
• Clockwise rotation
• 9-tooth drive
• Bosch manufacturer reference

Detailed Product Overview

MPA Electrical 17923 is a remanufactured starter assembly for BMW vehicles that require a Bosch-type, permanent magnet gear reduction unit. The 1.4 kW output, clockwise rotation, and 9-tooth drive help match the original starting system configuration on the listed BMW 5 Series, 6 Series, 7 Series, and X5 applications. Use this starter when replacing a worn or failed unit on a BMW 550i starter replacement, BMW 650i starter replacement, or BMW X5 starter replacement application.

This part cross-references BBB Industries 17923 for the same application.

Vehicle Fitment

• Fits 2006-2010 BMW 550i, N/A
• Fits 2006-2010 BMW 650i, N/A
• Fits 2004-2010 BMW X5, N/A
• Fits 2006-2009 BMW 750Li, N/A
• Fits 2006-2008 BMW 750i, N/A
• Fits 2004-2005 BMW 545i, N/A
• Fits 2004-2005 BMW 645Ci, N/A
• Fits 2004-2005 BMW 745i, N/A
• Fits 2004-2005 BMW 745Li, N/A

Common Replacement Symptoms

• Engine cranks slowly or not at all
• Starter clicks without engaging the engine
• Intermittent no-start condition
• Starter motor fails to turn consistently
• Starting system performance drops after wear or electrical failure

Installation Notes and Tips

Verify the original starter’s rotation, tooth count, voltage, and mounting configuration before installation. Confirm the vehicle application against the listed BMW fitment and compare the Bosch-style specifications to the removed unit to ensure proper match. Inspect battery condition, cable connections, and charging system output during replacement to avoid repeat starting issues.

Quality Assurance

MPA Electrical remanufactured starters are rebuilt to meet the application requirements of the listed BMW vehicles and are cataloged for direct replacement use. The Bosch reference and OE-style specifications help support accurate fitment selection for the correct BMW 550i, 650i, X5, 750Li, 750i, 545i, 645Ci, 745i, and 745Li applications.