Part #: 20045

Remy 20045 Alternator

Premium Remanufactured
⚙️ 24 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Premium Remanufactured
🚗Fitment: Ram, ProMaster 1500, ProMaster 2500, and ProMaster 3500
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Alternator for Ram ProMaster Vehicles

The Remy Premium Remanufactured Alternator 20045 is designed specifically for Ram ProMaster 1500, 2500, and 3500 models. This 12-volt alternator delivers a 180-amp output with a clockwise rotation, ensuring consistent electrical performance for your vehicle's charging system.

  • Amperage Rating: 180 amps for robust electrical output
  • Fan Type: Internal fan for efficient cooling
  • Remanufactured unit with Nippondenso OE manufacturer quality
  • Pulley Included for straightforward installation
  • Voltage Regulator Type: External for precise voltage control
  • Compatible with Ram ProMaster 1500, 2500, and 3500 models
  • Rotation Direction: Clockwise to match factory specifications

About the Premium Remanufactured Product Line

The Premium Remanufactured line by Remy offers alternators that have been carefully rebuilt to meet original equipment standards. This ensures that the alternator 20045 provides reliable performance and durability comparable to new units. Each component is inspected and tested to maintain quality, making it a practical choice for maintaining your Ram ProMaster's electrical system.

Product Details and Specifications

This Remy alternator features a 180-amp amperage rating, suitable for vehicles requiring higher electrical output. The internal fan design helps maintain optimal operating temperatures, reducing wear and extending service life. The included pulley and external voltage regulator type align with the original equipment setup, simplifying replacement and ensuring compatibility. The clockwise rotation matches the factory alternator's direction, preventing installation issues.

Common Applications and Problem Resolution

  • Restores charging system functionality in Ram ProMaster 1500, 2500, and 3500
  • Resolves battery drain or failure to charge issues
  • Eliminates dimming or flickering dashboard lights
  • Addresses warning lights related to charging system faults
  • Replaces alternators with worn or damaged internal fans or pulleys

Installation Notes and Tips

When installing the Remy Premium Remanufactured Alternator 20045, ensure the clockwise rotation matches your vehicle’s original alternator. The included pulley facilitates direct replacement without additional parts. Verify the external voltage regulator connections are secure and compatible with your Ram ProMaster model. It is recommended to test the charging system after installation to confirm proper operation.

Quality Assurance and Warranty

Remy’s Premium Remanufactured alternators undergo rigorous testing to meet or exceed OEM standards. This alternator is built with Nippondenso OE components to ensure reliability and longevity. While specific warranty details may vary, Remy typically offers coverage that supports confidence in the product’s performance and durability.

BrandRemy
Part Number20045
PositionPremium Remanufactured
Amperage Rating180
Fan TypeInternal
New or RemanufacturedRemanufactured
OE ManufacturerNippondenso
Pulley IncludedYes
Rotation DirectionClockwise
Voltage (V)12
Voltage Regulator TypeExternal

This part fits 24 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2021RamProMaster 15003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2021RamProMaster 25003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2021RamProMaster 35003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2020RamProMaster 15003.6LV6N/A180 Amps - specific for Alternator; Premium Remanufactured
2020RamProMaster 25003.6LV6N/A180 Amps - specific for Alternator; Premium Remanufactured
2020RamProMaster 35003.6LV6N/A180 Amps - specific for Alternator; Premium Remanufactured
2019RamProMaster 15003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2019RamProMaster 25003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2019RamProMaster 35003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2018RamProMaster 15003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2018RamProMaster 25003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2018RamProMaster 35003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2017RamProMaster 15003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2017RamProMaster 25003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2017RamProMaster 35003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2016RamProMaster 15003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2016RamProMaster 25003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2016RamProMaster 35003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2015RamProMaster 15003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2015RamProMaster 25003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2015RamProMaster 35003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2014RamProMaster 15003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2014RamProMaster 25003.6LV6N/A180 Amps, Standard fitting; Premium Remanufactured
2014RamProMaster 35003.6LV6N/A180 Amps, Standard fitting; Premium 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:

421000-71204727603AA68271769AA

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