Part #: SR4245X

Bosch SR4245X Starter Motor

Starter (Remanufactured)
39 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$249.89Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Starter (Remanufactured)
Fitment: Mazda, 3, 3 Sport, 6, CX-30, and CX-5
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

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.

BrandBosch
Part NumberSR4245X
PositionStarter (Remanufactured)
Cases Per Pallet (ORLY)125
Mounting Bolt Hole Quantity2
Mounting Hardware IncludedNo
Mounting Shims IncludedNo
New Or RemanufacturedRemanufactured
Nose Cone MaterialAluminum
Nose Cone TypeClosed Nose
Original Equipment Manufacturer NamesBO
Power Rating1.4
Solenoid AttachedYes
Starter FinishAluminum
Starter RotationClockwise
Tooth Quantity11
Unit(s) per Car Qty (ORLY)1
Voltage12

This part fits 39 vehicles. Search below:

YearMakeModelDrive TypeLitersCylindersPositionNotes
2023Mazda3 Sport2.5LL4N/AStarter (Remanufactured)
2023MazdaCX-52.5LL4N/AStarter (Remanufactured)
2023MazdaCX-502.5LL4N/AStarter (Remanufactured)
2022Mazda3 Sport2.5LL4N/AStarter (Remanufactured)
2022MazdaCX-52.5LL4N/AStarter (Remanufactured)
2021Mazda32.5LL4N/AStarter (Remanufactured)
2021Mazda3 SportFWD2.5LL4N/AStarter (Remanufactured)
2021Mazda62.5LL4N/AStarter (Remanufactured)
2021MazdaCX-302.5LL4N/AStarter (Remanufactured)
2021MazdaCX-52.5LL4N/AStarter (Remanufactured)
2020Mazda32.5LL4N/AStarter (Remanufactured)
2020Mazda3 Sport2.5LL4N/AStarter (Remanufactured)
2020Mazda62.5LL4N/AStarter (Remanufactured)
2020MazdaCX-302.5LL4N/AStarter (Remanufactured)
2020MazdaCX-52.5LL4N/AStarter (Remanufactured)
2019Mazda32.5LL4N/AStarter (Remanufactured)
2019Mazda3 Sport2.5LL4N/AStarter (Remanufactured)
2019Mazda62.5LL4N/AStarter (Remanufactured)
2019MazdaCX-52.5LL4N/AStarter (Remanufactured)
2018Mazda32.5LL4N/AStarter (Remanufactured)
2018Mazda3 Sport2.5LL4N/AStarter (Remanufactured)
2018Mazda62.5LL4N/AStarter (Remanufactured)
2018MazdaCX-52.5LL4N/AStarter (Remanufactured)
2017Mazda32.5LL4N/AStarter (Remanufactured)
2017Mazda3 Sport2.5LL4N/AStarter (Remanufactured)
2017Mazda62.5LL4N/AStarter (Remanufactured)
2017MazdaCX-52.5LL4N/AStarter (Remanufactured)
2016Mazda32.5LL4N/AStarter (Remanufactured)
2016Mazda3 Sport2.5LL4N/AStarter (Remanufactured)
2016Mazda62.5LL4N/AStarter (Remanufactured)
2016MazdaCX-52.5LL4N/AStarter (Remanufactured)
2015Mazda32.5LL4N/AStarter (Remanufactured)
2015Mazda3 Sport2.5LL4N/AStarter (Remanufactured)
2015Mazda62.5LL4N/AStarter (Remanufactured)
2015MazdaCX-52.5LL4N/AStarter (Remanufactured)
2014Mazda32.5LL4N/AStarter (Remanufactured)
2014Mazda3 Sport2.5LL4N/AStarter (Remanufactured)
2014Mazda62.5LL4N/AStarter (Remanufactured)
2014MazdaCX-52.5LL4N/AStarter (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:

PY0118400

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.