Part #: 42009

BBB Industries 42009 Alternator

REMAN ALTERNATOR
⚙️ 16 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦REMAN ALTERNATOR
🚗Fitment: GMC, Chevrolet, and Cadillac, Acadia, Traverse, ATS, and CTS
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Overview of BBB Industries REMAN ALTERNATOR 42009

The BBB Industries REMAN ALTERNATOR 42009 is designed to provide reliable electrical charging performance for select Cadillac, Chevrolet, and GMC vehicles. Engineered with a 160-amp rating and a decoupled clutch pulley, this alternator supports efficient power delivery and smooth operation.

  • 160 Ampere output for consistent electrical performance
  • Decoupled clutch pulley included for reduced drivetrain stress
  • Internal fan cooling method to maintain optimal temperature
  • 5-groove serpentine pulley with 2-1/8 inch diameter
  • Compatible with 12 Volt electrical systems
  • Negative polarity with clockwise rotation direction
  • Internal voltage regulator for stable voltage control
  • OE Manufacturer: Nippondenso
  • Plug clock position at 9 o'clock for proper fitment

Detailed Product Description

This remanufactured alternator from BBB Industries features a brush-type design cooled by an internal fan, ensuring consistent airflow and heat dissipation during operation. The included decoupler pulley reduces vibration and noise by allowing the pulley to rotate independently from the alternator shaft, which helps extend the life of the belt and related components. With a 5-groove serpentine pulley measuring 2-1/8 inches in diameter, this alternator is engineered to fit specific applications requiring a clockwise rotation and negative polarity electrical system.

The internal voltage regulator maintains a steady 12-volt output, essential for the proper functioning of your vehicle’s electrical system. The plug clock position at 9 o'clock ensures compatibility with the wiring harnesses of Cadillac ATS, CTS, and Chevrolet Acadia and GMC Traverse models.

About the REMAN ALTERNATOR Product Line

The REMAN ALTERNATOR line by BBB Industries offers remanufactured alternators that meet or exceed original equipment specifications. These alternators are rebuilt using quality components and tested for performance and durability. The 42009 model is part of this line, providing a cost-effective solution for restoring charging system functionality in compatible vehicles without compromising reliability.

Common Applications and Issues Addressed

  • Replacement for failing or weak alternators in Cadillac ATS, CTS, Chevrolet Acadia, and GMC Traverse
  • Resolves battery charging problems and electrical system malfunctions
  • Eliminates issues related to pulley noise or belt slippage due to worn clutch pulleys
  • Addresses overheating concerns with improved internal fan cooling
  • Corrects voltage irregularities caused by faulty voltage regulators

Installation Notes and Tips

  • Ensure the alternator’s plug clock position matches the vehicle’s wiring harness (9 o'clock)
  • Verify serpentine belt routing and tension after installation
  • Check battery condition before and after installation to confirm charging system performance
  • Use proper tools to avoid damage to the decoupler pulley during installation
  • Follow vehicle-specific service manual instructions for torque specifications and safety precautions

Quality Assurance and Warranty

BBB Industries remanufactured alternators undergo rigorous testing to meet OEM standards, including electrical output and mechanical integrity. The REMAN ALTERNATOR 42009 is backed by BBB Industries’ quality assurance processes, providing confidence in fit, form, and function. Warranty details are available through BBB Industries and typically cover defects in materials and workmanship for a specified period.

BrandBBB Industries
Part Number42009
PositionREMAN ALTERNATOR
AC TapNo
Amperage Rating160
Brushless DesignNo
Cooling MethodAir
Decoupled Or Clutch PulleyYes
Fan TypeInternal
Number Of Pulley Grooves5
OE ManufacturerNippondenso
One Wire CapableNo
Outside Pulley Diameter (in)2-1/8
Outside Pulley Diameter (mm)54
Plug Clock Position9
PolarityNegative
Pulley Belt TypeSerpentine
Pulley IncludedYes
Pulley TypeDecoupler
Rotation DirectionClockwise
Voltage (V)12
Voltage Regulator TypeInternal

This part fits 16 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersPositionNotes
2021GMCAcadia2.5LL4N/A160 Amps; REMAN ALTERNATOR
2020GMCAcadia2.5LL4N/A160 Amps; REMAN ALTERNATOR
2019ChevroletTraverse2.0LL4N/A160 Amps; REMAN ALTERNATOR
2019GMCAcadia2.5LL4N/A160 Amps; REMAN ALTERNATOR
2018ChevroletTraverse2.0LL4N/A160 Amps; REMAN ALTERNATOR
2018GMCAcadia2.5LL4N/A160 Amps; REMAN ALTERNATOR
2017GMCAcadia2.5LL4N/A160 Amps; REMAN ALTERNATOR
2016CadillacATSManual2.0LL4N/Aw/Engine Stop/Start Feature; 160 Amps; REMAN ALTERNATOR
2015CadillacATS2.5LL4N/Aw/Engine Stop/Start Feature; 160 Amps; REMAN ALTERNATOR
2015CadillacATS2.0LL4N/Aw/Engine Stop/Start Feature; 160 Amps; REMAN ALTERNATOR
2015CadillacCTS2.0LL4N/Aw/Engine Stop/Start Feature; 160 Amps; REMAN ALTERNATOR
2014CadillacATS2.5LL4N/Aw/Engine Stop/Start Feature; 160 Amps; REMAN ALTERNATOR
2014CadillacATS2.0LL4N/Aw/Engine Stop/Start Feature; 160 Amps; REMAN ALTERNATOR
2014CadillacCTS2.0LL4N/Aw/Engine Stop/Start Feature; 160 Amps; REMAN ALTERNATOR
2013CadillacATS2.5LL4N/Aw/Engine Stop/Start Feature; 160 Amps; REMAN ALTERNATOR
2013CadillacATS2.0LL4N/Aw/Engine Stop/Start Feature; 160 Amps; REMAN ALTERNATOR

* 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:

104211-8170104211-8171104211-8172104211-951013592809228925682299692784093307

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