Remy
Premium Remanufactured

Remy 12399 Alternator

Brand Remy 12399
Amperage Rating 100
Fan Type Internal
New or Remanufactured Remanufactured
OE Manufacturer Hitachi
Pulley Included Yes
Rotation Direction Clockwise
Voltage (V) 12
Voltage Regulator Type Internal
Product line Premium Remanufactured
Fits Isuzu · 4 vehicles

Remanufactured unit. Premium remanufactured alternator for dependable charging performance.

OE manufacturer pedigree. Built to Hitachi specifications for consistent fit and function.

Internal regulator. Integrated voltage regulation helps simplify installation.

Cross-references 8972873510 and LR1100-730 for the same application. See all 2.

$201.65Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $201.65
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Remanufactured Alternator for Isuzu Rodeo

This Remy Premium Remanufactured alternator, part number 12399, is a 12-volt charging system component built for 2002-2003 Isuzu Rodeo and 2002-2003 Isuzu Rodeo Sport applications. It delivers 100 amps with an internal regulator and internal fan design for direct replacement use in the specified vehicles.

Key Features

  • Remy Premium Remanufactured alternator
  • Part number 12399
  • 100 amp output
  • 12-volt electrical system
  • Internal voltage regulator
  • Internal fan type
  • Clockwise rotation
  • Pulley included
  • OE manufacturer reference: Hitachi

Product Details

Remy Premium Remanufactured focuses on remanufactured electrical components built for replacement service. This alternator is specified for 2002-2003 Isuzu Rodeo and 2002-2003 Isuzu Rodeo Sport models, with fitment listed for various alternator configurations in those applications. The 12399 alternator cross-references Hitachi-style applications and is identified with interchange part numbers 8972873510 and LR1100-730 for the same use case.

Common Problems This Part Can Address

  • Low charging output from a worn alternator
  • Battery warning light caused by charging system failure
  • Dim lights or electrical instability at idle
  • Charging issues after alternator bearing or regulator wear
  • Starting problems related to insufficient system voltage

Installation Notes and Tips

Verify the existing alternator’s amperage, rotation direction, pulley style, and regulator configuration before installation. Confirm fitment against the vehicle’s charging system layout for your 2002-2003 Isuzu Rodeo or 2002-2003 Isuzu Rodeo Sport, since the listing notes compatibility with various alternator models. Inspect the drive belt, battery condition, and charging cables during replacement to help ensure proper system performance.

Quality Assurance

Remy Premium Remanufactured parts are remanufactured to replace worn electrical components with service-ready units. This alternator is built to OE manufacturer specifications associated with Hitachi applications and is intended for direct replacement in the listed vehicles.

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2003IsuzuRodeo2.2LL4N/A100 Amps, fits various alternator models.; Premium Remanufactured
2003IsuzuRodeo Sport2.2LL4N/A100 Amps, fits various alternator models.; Premium Remanufactured
2002IsuzuRodeo2.2LL4N/A100 Amps, fits various alternator models.; Premium Remanufactured
2002IsuzuRodeo Sport2.2LL4N/A100 Amps, fits various alternator models.; Premium Remanufactured
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
8972873510LR1100-730