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Bosch SR4240X Starter
| Brand | Bosch SR4240X |
|---|---|
| Voltage | 12 |
| Power Rating | 1 |
| Mounting Bolt Hole Quantity | 2 |
| Nose Cone Material | Aluminum |
| Nose Cone Type | Closed nose |
| Starter Rotation | Clockwise |
| Mounting Hardware Included | No |
| Mounting Shims Included | No |
| Solenoid Attached | Yes |
| Tooth Quantity | 11 |
| New Or Remanufactured | Remanufactured |
| Original Equipment Manufacturer Names | Bo |
| Starter Finish | Aluminum |
| Product line | Starter (Remanufactured) |
| Fits | Mazda · 8 vehicles |
Remanufactured starter. Built and tested for dependable performance and reliability.
Aluminum nose cone. Lightweight construction with a closed-nose design.
Solenoid attached. Simplifies installation with an integrated starter assembly.
Cross-references LF8J18400B for the same application. See all 1.
Bosch SR4240X Starter for Mazda 3
Bosch SR4240X is a remanufactured 12-volt starter built for direct replacement use on select Mazda 3 and Mazda 3 Sport applications. It features a clockwise rotation, an attached solenoid, and an aluminum closed-nose design for a precise OE-style fit.
For drivers searching for a remanufactured starter for 2010-2012 Mazda 3 or 2010-2012 Mazda 3 Sport, this Bosch starter is built around the original application requirements and the correct 11-tooth drive configuration.
Key Features
- 12-volt remanufactured starter for starting-system replacement
- Clockwise starter rotation
- Attached solenoid for simplified component matching
- Aluminum nose cone with closed-nose design
- 11-tooth starter drive
- Two mounting bolt holes for OE-style installation
- Bosch Premium Starters are built and tested for performance and reliability
Detailed Description
Bosch SR4240X is a remanufactured starter designed for select Mazda compact cars, including the Mazda 3 and Mazda 3 Sport. The unit uses a 12-volt electrical setup, a clockwise rotation pattern, and an aluminum finish with a closed nose cone to match the original starter layout. With the solenoid attached and the correct 11-tooth drive, it is built for direct replacement in the specified applications. This Bosch starter is a practical choice when replacing a worn starter on a 2010-2012 Mazda 3 or 2010-2012 Mazda 3 Sport.
This part cross-references LF8J18400B for the same application.
What It Helps Fix
- Slow or weak engine cranking
- No-start conditions caused by starter wear
- Intermittent starting after key turn
- Grinding or abnormal starter engagement
- Electrical starting-system failure tied to the starter assembly
Installation Notes and Tips
Verify the vehicle’s year, model, and starter configuration before installation. Confirm the 2-bolt mounting pattern, clockwise rotation, and 11-tooth drive match the original unit. Mounting hardware and shims are not included, so reuse or source the correct service parts as needed. Check battery condition, cable integrity, and charging-system output during replacement to avoid repeat starting issues.
Quality Assurance
Bosch Premium Starters are remanufactured, built, and tested to meet performance and reliability expectations for starting-system service. The SR4240X is engineered as an OE-style replacement for the listed Mazda applications.
| Year | Make | Model | Body Type | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2012 | Mazda | 3 | Hatchback | 2.0L | L4 | N/A | To 06/2012; Starter (Remanufactured) |
| 2012 | Mazda | 3 | — | 2.0L | L4 | N/A | Starter (Remanufactured) |
| 2012 | Mazda | 3 | Sedan | 2.0L | L4 | N/A | Starter (Remanufactured) |
| 2012 | Mazda | 3 Sport | — | 2.0L | L4 | N/A | Starter (Remanufactured) |
| 2011 | Mazda | 3 | — | 2.0L | L4 | N/A | Starter (Remanufactured) |
| 2011 | Mazda | 3 Sport | — | 2.0L | L4 | N/A | Starter (Remanufactured) |
| 2010 | Mazda | 3 | — | 2.0L | L4 | N/A | Starter (Remanufactured) |
| 2010 | Mazda | 3 Sport | — | 2.0L | L4 | N/A | Starter (Remanufactured) |
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