12V 150A Alternator for 2012-2017 Jeep Wrangler & 2018 Wrangler JK
Available in stock (20)
12V 150A Alternator for Jeep Wrangler and Wrangler JK
Replacement 12-volt, 150-amp alternator for 2012–2017 Jeep Wrangler and 2018 Jeep Wrangler JK applications.
Critical 2018 fitment warning: This listing specifies the 2018 Wrangler JK. It is not confirmed for the newer 2018 Wrangler JL platform. Check the model designation, VIN, and original alternator before ordering. For every listed year, compare the original alternator label, 150A output, electrical connector and pin arrangement, terminal position, mounting ears, 6-groove clutch pulley, belt alignment, clockwise rotation, dimensions, and original part number.
Vehicle Compatibility
- 2012–2017 Jeep Wrangler: Engine, body style, trim, and option restrictions are not specified in the available source data
- 2018 Jeep Wrangler JK: All models listed by the available source data
Not confirmed: 2018 Jeep Wrangler JL.
Product Specifications
- Product type: Alternator
- Voltage: 12V
- Rated output: 150A
- Rotation: CW (clockwise)
- Pulley: 6-groove clutch pulley
- Regulator / fan configuration: IR / IF
- Quantity: 1 alternator
OE numbers, connector pin count, mounting dimensions, engine restrictions, body-style restrictions, and additional option details are not specified in the available description. Match the replacement directly to the original alternator before ordering.
Common Charging-System Symptoms
- Battery or charging warning light remains on
- Low or unstable charging voltage
- Battery repeatedly loses charge after testing good
- Dim or fluctuating lighting
- Noise from the alternator pulley or internal bearings
These symptoms can also be caused by the battery, drive belt, tensioner, wiring, grounds, fuses, or charging-control circuit. Test the complete charging system before replacing the alternator.
Installation Notes
Professional installation is recommended. Disconnect the battery according to the vehicle manufacturer’s procedure before removal. Inspect the drive belt, tensioner, electrical connections, battery condition, and grounds. After installation, verify belt alignment, clutch-pulley operation, charging voltage, warning-light operation, and secure electrical connections.
Frequently Asked Questions
Does this fit a 2018 Wrangler JL?
No JL compatibility is provided. The available fitment specifies the 2018 Wrangler JK.
What is the alternator output?
The listed rating is 12 volts and 150 amps.
What pulley does it use?
The available specification lists a clockwise 6-groove clutch pulley.
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