MPA Electrical 19431 Starter Motor

BMW Starter Replacement

MPA Electrical Part Number 19431 is a remanufactured starter built for BMW applications that use a 12-volt, clockwise-rotation unit with a permanent magnet gear reduction design. It is specified with a 1.2 kW rating, 9 teeth, and Bosch manufacturer sourcing for the core design.

Use this remanufactured starter when servicing BMW 1 Series M, 128i, 135i, 323i, 328i, 335i, 528i, X3, X5, X6, Z4, and related models listed below. Part number 19431 is a direct-fit replacement for a wide range of BMW starting-system applications from 2006 through 2011.

Key Features

• Remanufactured starter for BMW electrical starting systems
• Permanent magnet gear reduction design for compact, efficient cranking
• 1.2 kW output rating
• 12-volt electrical system
• Clockwise rotation
• 9-tooth drive configuration
• Built to Bosch specifications
• MPA Electrical Part Number 19431

Detailed Description

MPA Electrical 19431 is a remanufactured starter engineered for BMW vehicles that require a Bosch-style, clockwise-rotation starter with a 9-tooth drive. The permanent magnet gear reduction layout supports strong engagement in a compact housing, while the 1.2 kW rating matches the electrical demands of the listed BMW applications. This part number 19431 is cross-referenced to BBB Industries 17922 for the same application.

Compatible With 2011 BMW 1 Series M, 128i, 135i, 323i, 328i, 328i xDrive, 335i, 335i xDrive, 335is, 528i, 535i GT, 535i GT xDrive, 740i, 740Li, X3, X6, and Z4 models built up to March 2011, plus 2006-2010 BMW 325i, 325xi, 330Ci, 330i, 330xi, 525i, 525xi, 530i, 530xi, 528i, 528i xDrive, 535i, 535i xDrive, X3, X5, X6, and Z4 applications listed in the fitment data.

What It Helps Solve

• Slow cranking or no-crank conditions
• Starter motor failure from worn internal components
• Intermittent starting on BMW 3 Series, 5 Series, X3, X5, X6, and Z4 models
• Incorrect starter tooth count or rotation mismatch
• Electrical starting issues tied to a failing remanufactured starter assembly

Installation Notes and Tips

Verify the vehicle build date before ordering, especially for 2011 BMW models that fit only up to March 2011. Confirm 12-volt system requirements, clockwise rotation, and 9-tooth drive count against the original unit before installation. Match the starter to the exact BMW model and engine application shown in the fitment list to avoid interchange errors.

Quality Assurance

MPA Electrical remanufactured starters are built around Bosch-based specifications for the listed BMW applications. Part number 19431 is intended for direct replacement use where the original starter matches the stated design, electrical rating, rotation, and tooth count.