Bosch SR0423N Starter

Bosch SR0423N Starter Overview

The Bosch SR0423N is a new 12-volt starter built for reliable engine cranking in select Volkswagen and Audi applications. It uses a permanent magnet gear reduction design with a grounded aluminum case and an attached solenoid for a compact, OE-style fit.

Compatible with 2004-2005 Volkswagen Passat and 2002 Audi S4 applications, this Bosch Premium Starter is engineered for consistent starting performance in vehicles equipped with automatic start/stop operation. The SR0423N part number is also referenced for direct replacement searches and service matching.

Key Features

• 12-volt starter with permanent magnet gear reduction (PMGR) design
• 1.8 power rating for dependable cranking performance
• Clockwise rotation with 9-tooth pinion
• Grounded aluminum case and aluminum nose cone
• Closed nose design with flange mounting
• Solenoid attached for streamlined replacement
• Designed for automatic start/stop operation
• New Bosch starter, part number SR0423N

Detailed Description

Bosch Starter (New) SR0423N is built as a premium replacement starter for select Audi and Volkswagen vehicles. The PMGR design helps reduce size and weight while maintaining strong starting output, and the closed-nose aluminum housing supports durable everyday use. This starter is a direct-fit style solution for 2004-2005 Volkswagen Passat and 2002 Audi S4 applications, making it a practical choice when replacing a worn or slow-cranking unit. Bosch SR0423N is also cross-referenced for the same application with 068911024E and 068911024F.

What It Helps Fix

• Slow or weak engine cranking
• No-start conditions caused by starter failure
• Intermittent starter engagement
• Grinding or inconsistent starter operation
• Starting issues in vehicles with start/stop systems

Installation Notes and Tips

Verify the vehicle’s original starter configuration before installation, including 12-volt system requirements, clockwise rotation, 9-tooth pinion count, and flange mounting style. This unit does not include mounting hardware or shims, so reuse or source the correct vehicle-specific hardware as needed. Confirm clearance around the aluminum nose cone and check electrical connections, battery condition, and charging system health before final installation.

Quality Assurance

Bosch Premium Starters are manufactured and tested to meet demanding starting-system requirements for consistent performance and reliability. The SR0423N is a new starter assembly built for service replacement in the listed Audi and Volkswagen applications.