Bosch SR9521X Starter Motor

Reliable Starter Replacement for BMW Vehicles

The Bosch Starter (Remanufactured) SR9521X is designed to provide dependable starting power for a wide range of BMW models. Engineered to meet OEM specifications, this 12-volt starter ensures consistent performance and durability for your vehicle's electrical system.

• 12-volt electrical system compatibility
• 1.5 kW power rating for efficient engine cranking
• Closed aluminum nose cone for enhanced durability
• Clockwise starter rotation
• 13-tooth pinion gear for precise engagement
• Solenoid attached for streamlined installation
• Two mounting bolt holes for secure fitment
• Remanufactured to OEM standards

About the Bosch Starter (Remanufactured) Product Line

The Bosch Starter (Remanufactured) line offers high-quality remanufactured starters that meet strict OEM requirements. Each unit undergoes thorough testing and refurbishment to restore functionality and reliability. This product line provides a cost-effective alternative to new starters without compromising on performance, making it suitable for BMW models requiring dependable starting components.

Detailed Product Description

The SR9521X starter features a robust 12-volt design with a 1.5 kW power rating, delivering sufficient torque to start engines efficiently. Its closed aluminum nose cone enhances protection against environmental factors, while the clockwise rotation matches the original equipment specifications for proper operation. The attached solenoid simplifies installation by eliminating the need for separate components. With two mounting bolt holes and a 13-tooth pinion gear, this starter ensures a secure and precise fit for compatible BMW vehicles.

Compatible BMW Models and Common Applications

• BMW 335i, 335i GT xDrive, 335i xDrive
• BMW 435i, 435i Gran Coupe, 435i xDrive, 435i xDrive Gran Coupe
• BMW 535i, 535i GT, 535i GT xDrive, 535i xDrive
• BMW 640i, 640i Gran Coupe, 640i xDrive, 640i xDrive Gran Coupe
• BMW 740i, 740Li, 740Li xDrive
• BMW ActiveHybrid 3, M2, M3, M4, M235i, M235i xDrive
• BMW X3, X4, X5, X6

Common Issues Addressed by This Starter

• Engine fails to crank or slow cranking
• Intermittent starting problems
• Grinding noise during engine start
• Starter motor overheating or stalling
• Electrical system faults related to starter solenoid

Installation Notes and Tips

Ensure the vehicle battery is fully charged before installation. This starter includes an attached solenoid but does not come with mounting hardware or shims, so reuse existing components or acquire replacements as needed. Verify the clockwise rotation and two mounting bolt hole configuration match your vehicle’s requirements. Proper torque specifications should be followed to secure the starter and prevent damage.

Quality Assurance and Warranty

This Bosch remanufactured starter is tested to meet OEM standards for performance and reliability. While specific warranty details are not provided here, Bosch remanufactured parts typically come with a limited warranty covering defects in materials and workmanship. Consult the product documentation or supplier for exact warranty terms.