Bosch SR0861N Starter

Reliable Starter for BMW Models

The Bosch Starter (New) SR0861N is engineered to provide dependable starting power for a range of BMW vehicles. Designed with a permanent magnet gear reduction system, this 12-volt starter ensures efficient engine cranking and smooth operation for models including the BMW 228i, 320i, 328i, 428i, 528i, X1, X3, X4, and Z4.

• 12-volt permanent magnet gear reduction design
• Power rating of 2.1 kW for consistent starting performance
• Clockwise (right) rotation suitable for specific BMW applications
• Aluminum housing and closed nose cone for durability and heat dissipation
• Solenoid attached for integrated operation
• Flange mounting type with one mounting bolt hole
• Designed for automatic start/stop operation compatibility
• Grounded case for reliable electrical connection
• 11 teeth on the pinion gear for precise engagement
• Product length of approximately 9 inches and weight of 7.56 lbs

About the Bosch Starter (New) Product Line

The Bosch Starter (New) line focuses on delivering brand-new, high-quality starters designed to meet or exceed OEM specifications. This product line emphasizes durability and performance, incorporating advanced permanent magnet gear reduction technology to improve starting efficiency and reduce electrical load. The SR0861N starter is part of this line, offering a reliable replacement option for BMW vehicles requiring a new starter unit.

Detailed Product Description

The SR0861N starter features a permanent magnet gear reduction design that enhances torque output while reducing current draw, making it suitable for modern BMW engines with automatic start/stop systems. Its aluminum housing and closed nose cone provide strength and effective heat management, while the grounded case ensures stable electrical grounding. The starter rotates clockwise (right) and includes an attached solenoid for seamless engagement. With a single mounting bolt hole and flange mounting type, it fits securely in the designated engine location. The 11-tooth pinion gear ensures proper meshing with the flywheel for reliable engine starts.

Common Applications and Issues Addressed

• Replacement for failed or worn-out starters in BMW 228i, 320i, 328i, 428i, 528i, X1, X3, X4, and Z4 models
• Resolves slow or inconsistent engine cranking
• Eliminates starter noise caused by damaged pinion teeth
• Addresses starter failure due to solenoid or electrical faults
• Improves starting reliability in vehicles with automatic start/stop systems

Installation Notes and Tips

Ensure the vehicle battery is fully charged before installation. The SR0861N starter mounts using a flange with one bolt hole; verify proper alignment to avoid stress on the mounting flange. Since mounting hardware and shims are not included, retain original components or source compatible hardware separately. Confirm the starter rotation is clockwise (right) to match the vehicle’s engine requirements. Properly connect the grounded case and solenoid wiring to ensure reliable electrical operation.

Quality Assurance and Warranty

This Bosch starter is a new, OEM-quality replacement part designed to meet strict manufacturing standards. It is built with durable aluminum housing and high-grade components to provide long service life. While specific warranty details are not provided here, Bosch typically offers limited warranties on their new starters to cover defects in materials and workmanship. Consult the product documentation or supplier for exact warranty terms.