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Bosch SR4245X Starter Motor
Reliable Starter for Mazda 3, 6, CX-5, CX-30, and CX-50
The Bosch Starter (Remanufactured) SR4245X is designed to provide dependable starting power for select Mazda vehicles. Engineered to meet OEM specifications, this 12-volt starter ensures consistent performance for models including the Mazda 3, 3 Sport, 6, CX-5, CX-30, and CX-50.
- 12-volt electrical system compatibility
- 1.4 kW power rating for efficient engine cranking
- Two mounting bolt holes for secure installation
- Aluminum closed nose cone for durability and corrosion resistance
- Clockwise starter rotation matching OEM design
- Attached solenoid for integrated operation
- 11 teeth on the starter gear for proper engagement
- Remanufactured unit meeting Bosch quality standards
About the Bosch Starter (Remanufactured) Product Line
The Bosch Starter (Remanufactured) line offers remanufactured starters that maintain strict quality controls to restore original equipment performance. Each unit, including the SR4245X, undergoes thorough testing and refurbishment to ensure reliability and longevity. This product line provides a cost-effective alternative to new starters while adhering to Bosch’s standards for fit and function.
Detailed Product Description
The SR4245X starter features a robust aluminum closed nose cone that protects internal components from environmental damage and enhances heat dissipation. Its 12-volt design and 1.4 kW power rating deliver sufficient torque to crank engines efficiently. The starter’s clockwise rotation and 11-tooth gear are engineered to match the specifications of compatible Mazda models, ensuring smooth engagement with the flywheel. Although mounting hardware and shims are not included, the starter is designed for straightforward installation using existing vehicle components.
Common Applications and Problem Resolution
- Replaces faulty or worn-out starters in Mazda 3, 3 Sport, 6, CX-5, CX-30, and CX-50
- Addresses issues such as engine failure to crank or slow cranking
- Resolves intermittent starting problems caused by solenoid or gear wear
- Eliminates starter noise due to damaged nose cone or gear teeth
- Improves starting reliability in vehicles with electrical system voltage of 12 volts
Installation Notes and Tips
Ensure the vehicle battery is fully charged before installation. Verify the starter rotation and tooth count match the original unit. Use existing mounting bolts and hardware, as these are not included with the SR4245X. Properly align the starter to avoid gear misengagement. It is recommended to inspect the flywheel teeth for wear during replacement.
Quality Assurance and Warranty
This Bosch remanufactured starter is tested to meet or exceed OEM standards for performance and durability. While specific warranty details may vary, Bosch remanufactured starters typically come with a limited warranty covering defects in materials and workmanship. Refer to Bosch or the parts provider for exact warranty terms.
| Brand | Bosch |
|---|---|
| Part Number | SR4245X |
| Position | Starter (Remanufactured) |
| Cases Per Pallet (ORLY) | 125 |
| Mounting Bolt Hole Quantity | 2 |
| Mounting Hardware Included | No |
| Mounting Shims Included | No |
| New Or Remanufactured | Remanufactured |
| Nose Cone Material | Aluminum |
| Nose Cone Type | Closed Nose |
| Original Equipment Manufacturer Names | BO |
| Power Rating | 1.4 |
| Solenoid Attached | Yes |
| Starter Finish | Aluminum |
| Starter Rotation | Clockwise |
| Tooth Quantity | 11 |
| Unit(s) per Car Qty (ORLY) | 1 |
| Voltage | 12 |
This part fits 39 vehicles. Search below:
| Year | Make | Model | Drive Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2023 | Mazda | 3 Sport | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2023 | Mazda | CX-5 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2023 | Mazda | CX-50 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2022 | Mazda | 3 Sport | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2022 | Mazda | CX-5 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2021 | Mazda | 3 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2021 | Mazda | 3 Sport | FWD | 2.5L | L4 | N/A | Starter (Remanufactured) |
| 2021 | Mazda | 6 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2021 | Mazda | CX-30 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2021 | Mazda | CX-5 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2020 | Mazda | 3 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2020 | Mazda | 3 Sport | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2020 | Mazda | 6 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2020 | Mazda | CX-30 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2020 | Mazda | CX-5 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2019 | Mazda | 3 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2019 | Mazda | 3 Sport | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2019 | Mazda | 6 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2019 | Mazda | CX-5 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2018 | Mazda | 3 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2018 | Mazda | 3 Sport | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2018 | Mazda | 6 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2018 | Mazda | CX-5 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2017 | Mazda | 3 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2017 | Mazda | 3 Sport | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2017 | Mazda | 6 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2017 | Mazda | CX-5 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2016 | Mazda | 3 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2016 | Mazda | 3 Sport | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2016 | Mazda | 6 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2016 | Mazda | CX-5 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2015 | Mazda | 3 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2015 | Mazda | 3 Sport | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2015 | Mazda | 6 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2015 | Mazda | CX-5 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2014 | Mazda | 3 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2014 | Mazda | 3 Sport | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2014 | Mazda | 6 | 2.5L | L4 | N/A | Starter (Remanufactured) | |
| 2014 | Mazda | CX-5 | 2.5L | L4 | N/A | Starter (Remanufactured) |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.