Bosch SR3311X Starter Motor

Bosch Remanufactured Starter for BRZ, FR-S, and 86

The Bosch SR3311X is a remanufactured 12-volt starter built for direct replacement in select Subaru, Scion, and Toyota applications. It is designed for reliable cranking performance with a 1.4 kW power rating, integrated solenoid, and a closed-nose aluminum housing.

Key Features

• Remanufactured Bosch starter for starting-system replacement
• 12-volt design with 1.4 power rating
• Counterclockwise starter rotation
• Closed nose with aluminum nose cone and aluminum finish
• Integrated solenoid attached
• 10-tooth drive gear
• 2 mounting bolt holes for application-specific fitment

Product Details

Bosch Premium Starters are remanufactured, built, and tested to deliver consistent starting performance and dependable operation. The SR3311X starter is engineered for select 2013-2020 Subaru BRZ, 2017-2020 Toyota 86, and 2013-2016 Scion FR-S applications, making it a direct-fit replacement for vehicles that need a starter motor with the correct rotation, tooth count, and mounting configuration. This part cross-references Bosch OE-style applications such as 23300AA720 and SU00300450 for the same application.

Common Starting Issues This Starter Can Address

• Engine cranks slowly or inconsistently
• Starter clicks but does not engage
• No-crank condition caused by starter motor wear
• Intermittent starting after repeated key cycles
• Noise from a worn starter drive or solenoid assembly

Installation Notes and Tips

Verify the vehicle’s original starter uses a 12-volt, counterclockwise configuration with a 10-tooth drive and 2-bolt mounting pattern before installation. Mounting hardware and shims are not included, so reuse or source the correct vehicle-specific hardware as needed. Confirm electrical connections, battery condition, and charging-system output during replacement to avoid repeat starting complaints.

Quality Assurance

Bosch remanufactured starters are built and tested to meet application-specific performance and reliability requirements. The SR3311X is part of Bosch’s Starter (Remanufactured) line, which focuses on OE-style fit and dependable starting-system operation.