Aftermarket Delco Voltage Regulator D3587
Aftermarket Delco Voltage Regulator D3587
Aftermarket Delco Voltage Regulator D3587
Aftermarket Delco Voltage Regulator D3587
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Aftermarket Delco Voltage Regulator D3587

Delco
D3587
In stock
Voltage Regulator
$60.00

Aftermarket Delco Voltage Regulator D3587

Shipping

In-stock orders ship out same day or next business day via USPS.

Pre Order

Pre-orders ship out in the order received within 7–21 business days.

Customer Support

Need help finding a part? Contact Support@RCAutoElectric.com

Specifications

  • MFR:DELCO
  • FEATURE 1:100% New
  • FEATURE 2:ASVR Design
  • FEATURE 3:All welded construction
  • NOTE 1:*Vset controlled by vehicle RVC system.
  • SPECS FOR:Delco DR44G Series IR/IF Alternators
  • SPECS:12 Volt, B-Circuit, F-L Terminals, 13.8 Default Vset*

Used On

  • Buick (2007-2007)
  • Cadillac (2005-2014)
  • Chevrolet (2005-2016)
  • GMC (2005-2014)
  • Hummer (2008-2009)
  • Isuzu (2007-2008)
  • Saab (2007-2009)

Replaces

Delco: 07C12A0887, 10517755, Original Reference Number 0887

Lester Numbers

  • 8301, 8302, 8498, 8550

Unit Numbers

Delco: 10392759, 15093928, 15093929, 15200268, 15225928, 15263858, 15857608, 15857609, 15905871, 15905872, 20989651, 25869451, 25877026, 8400078, 8400105, 8400226, 8400240
GM: 10392759, 15093928, 15093929, 15225928, 15263858, 15857608, 15857609, 15905871, 15905872, 15905874, 20881337, 20989651, 22781127, 25869451, 25877026, 88878264
Isuzu: 8152259280
Saab: 15-22-5928

Vehicle Application

Buick Truck
Rainier L6 4.2L 256cid 2007

Cadillac Truck
Escalade ESV V8 6.0L 5967cc 364cid 2005–2006
Escalade ESV V8 6.2L 6162cc 376cid 2007–2014
Escalade EXT V8 6.0L 5967cc 364cid 2005–2006
Escalade EXT V8 6.2L 6162cc 376cid 2007–2013
Escalade V8 6.0L 5967cc 364cid 2005–2006
Escalade V8 6.2L 6162cc 376cid 2007–2014
Escalade V8 6.0L 5967cc 364cid 2009–2013
Escalade V8 6.2L 6162cc 376cid VIN F 2011–2014

Chevrolet Truck
Avalanche 1500 V8 5.3L 5328cc 325cid 2005–2006
Avalanche V8 6.0L 5967cc 364cid 2007–2009
Avalanche V8 5.3L 5328cc 325cid 2007–2013
Cheyenne V8 5.3L 5328cc 325cid 2011–2014
Colorado V8 5.3L 5328cc 325cid 2009–2012
LCF 3500 V8 6.0L 5967cc 364cid 2016
LCF 4500 V8 6.0L 5967cc 364cid General Motors L96 2016
LCF 4500 V8 6.0L 5967cc 364cid General Motors LC8 2016
Silverado 1500 Classic V6 4.3L 262cid 2007
Silverado 1500 Classic V8 4.8L 294cid 2007
Silverado 1500 Classic V8 5.3L 5328cc 325cid 2007
Silverado 1500 HD V8 6.0L 5967cc 364cid 2005–2006
Silverado 1500 V6 4.3L 262cid VIN X 2005–2013
Silverado 1500 V8 4.8L 294cid VIN V 2005–2007
Silverado 1500 V8 5.3L 5328cc 325cid VIN B 2005–2006
Silverado 1500 V8 5.3L 5328cc 325cid VIN T 2005–2006
Silverado 1500 V8 6.0L 5967cc 364cid VIN N 2005–2006
Silverado 1500 V8 5.3L 5328cc 325cid 2005
Silverado 1500 V8 5.3L 5328cc 325cid VIN Z 2006
Silverado 1500 V8 4.8L 294cid VIN C 2007–2009
Silverado 1500 V8 5.3L 5328cc 325cid VIN J 2007–2009
Silverado 1500 V8 5.3L 5328cc 325cid VIN M 2007–2009
Silverado 1500 V8 6.0L 5967cc 364cid VIN Y 2007–2013
Silverado 1500 V8 5.3L 5328cc 325cid VIN 0 2007–2011
Silverado 1500 V8 5.3L 5328cc 325cid VIN 3 2007–2011
Silverado 1500 V8 5.3L 5328cc 325cid 2007
Silverado 1500 V8 6.0L 5967cc 364cid 2007
Silverado 1500 V8 5.3L 5328cc 325cid VIN Y 2008–2009
Silverado 1500 V8 6.2L 6162cc 376cid VIN 2 2009–2013
Silverado 1500 V8 4.8L 294cid VIN A 2010–2013
Silverado 1500 V8 4.8L 294cid 2012–2013
Silverado 1500 V8 5.3L 5328cc 325cid 2012–2013
Silverado 2500 HD V8 6.0L 5967cc 364cid 2005
Silverado 2500 HD V8 6.0L 5967cc 364cid 2007–2009
Silverado 2500 HD V8 6.0L 5967cc 364cid VIN K 2007
Silverado 2500 HD V8 6.6L 6599cc 403cid VIN 6 2007
Silverado 2500 HD V8 6.6L 6599cc 403cid 2008–2009
Silverado 2500 HD V8 6.0L 5967cc 364cid VIN G 2010
Silverado 2500 HD V8 6.0L 5967cc 364cid VIN K 2010
Silverado 2500 HD V8 6.0L 5967cc 364cid 2011–2014
Silverado 2500 V8 5.3L 5328cc 325cid 2008–2009
Silverado 2500 V8 5.3L 5328cc 325cid 2012
Silverado 2500 V8 5.3L 5328cc 325cid 2014
Silverado 3500 HD V8 6.0L 5967cc 364cid 2007–2009
Silverado 3500 HD V8 6.6L 6599cc 403cid VIN 6 2007
Silverado 3500 HD V8 6.6L 6599cc 403cid 2008–2009
Silverado 3500 HD V8 6.0L 5967cc 364cid VIN G 2010
Silverado 3500 HD V8 6.0L 5967cc 364cid VIN K 2010
Silverado 3500 HD V8 6.0L 5967cc 364cid 2011–2014
Silverado 3500 V8 6.0L 5967cc 364cid 2005
Silverado 3500 V8 6.0L 5967cc 364cid 2009
Suburban 1500 V8 5.3L 5328cc 325cid VIN 0 2007–2011
Suburban 1500 V8 5.3L 5328cc 325cid VIN 3 2007–2011
Suburban 1500 V8 5.3L 5328cc 325cid VIN J 2007–2009
Suburban 1500 V8 6.0L 5967cc 364cid 2007–2009
Suburban 1500 V8 5.3L 5328cc 325cid 2007
Suburban 1500 V8 5.3L 5328cc 325cid 2010–2014
Suburban 2500 V8 6.0L 5967cc 364cid 2007–2013
Tahoe V8 4.8L 294cid 2007–2009
Tahoe V8 5.3L 5328cc 325cid VIN J 2007–2009
Tahoe V8 5.3L 5328cc 325cid VIN 0 2007–2011
Tahoe V8 5.3L 5328cc 325cid 2007
Tahoe V8 6.2L 6162cc 376cid 2008–2009
Tahoe V8 6.0L 5967cc 364cid 2008–2013
Tahoe V8 5.3L 5328cc 325cid VIN 3 2009–2011
Tahoe V8 5.3L 5328cc 325cid 2012–2014
Trailblazer L6 4.2L 256cid 2007–2009

Chevrolet Van
Express 1500 V6 4.3L 262cid 2009–2014
Express 1500 V8 5.3L 5328cc 325cid 2009–2014
Express 1500 V8 5.3L 5328cc 325cid FLEX 2009
Express 1500 V8 5.3L 5328cc 325cid GAS 2009
Express 2500 V8 4.8L 294cid 2011–2014
Express 2500 V8 6.0L 5967cc 364cid VIN B 2011
Express 2500 V8 6.0L 5967cc 364cid 2012–2015
Express 3500 V8 4.8L 294cid 2011–2014
Express 3500 V8 6.0L 5967cc 364cid VIN B 2011
Express 3500 V8 6.0L 5967cc 364cid 2012–2015
Express 4500 V8 6.0L 5967cc 364cid General Motors L96 2010
Express 4500 V8 6.0L 5967cc 364cid 2011–2015
Express 4500 V8 6.0L 5967cc 364cid General Motors L96 2012–2014
Express 4500 V8 6.0L 5967cc 364cid General Motors LC8 2012–2014
Express 4500 V8 6.0L 5967cc 364cid General Motors L96 2016
Express 4500 V8 6.0L 5967cc 364cid General Motors LC8 2016
Express Cargo V8 6.0L 5967cc 364cid 2013–2014
Express Pasajeros V8 5.3L 5328cc 325cid 2013–2014
Express Pasajeros V8 6.0L 5967cc 364cid 2013–2014

Freightliner Truck
MT45 V8 6.0L 5972cc 365cid General Motors 2014
MT55 V8 6.0L 5972cc 365cid General Motors 2013–2014
XB Line V8 6.0L 5972cc 365cid General Motors 2014
XC Modular Rail V8 6.0L 5972cc 365cid General Motors 2013

GMC Truck
Canyon V8 5.3L 5328cc 325cid 2009–2012
Envoy L6 4.2L 256cid 2007–2009
Sierra 1500 Classic V6 4.3L 262cid 2007
Sierra 1500 Classic V8 4.8L 294cid 2007
Sierra 1500 Classic V8 5.3L 5328cc 325cid 2007
Sierra 1500 HD V8 6.0L 5967cc 364cid 2005
Sierra 1500 V8 4.8L 294cid 2005–2006
Sierra 1500 V8 5.3L 5328cc 325cid VIN B 2005–2006
Sierra 1500 V8 5.3L 5328cc 325cid VIN T 2005–2006
Sierra 1500 V8 5.3L 5328cc 325cid VIN Z 2005–2006
Sierra 1500 V8 6.0L 5967cc 364cid 2005–2006
Sierra 1500 V6 4.3L 262cid 2005–2007
Sierra 1500 V8 5.3L 5328cc 325cid 2007–2008
Sierra 1500 V8 6.2L 6162cc 376cid VIN 8 2007–2008
Sierra 1500 V8 4.8L 294cid VIN C 2007–2009
Sierra 1500 V8 6.0L 5967cc 364cid VIN Y 2007–2013
Sierra 1500 V8 4.8L 294cid VIN V 2007
Sierra 1500 V8 6.0L 5967cc 364cid 2007
Sierra 1500 V6 4.3L 262cid VIN X 2008–2013
Sierra 1500 V8 5.3L 5328cc 325cid VIN 0 2009–2010
Sierra 1500 V8 5.3L 5328cc 325cid VIN 3 2009–2010
Sierra 1500 V8 6.2L 6162cc 376cid VIN 2 2009–2013
Sierra 1500 V8 5.3L 5328cc 325cid VIN 3, VIN 0, VIN J, VIN M 2009
Sierra 1500 V8 5.3L 5328cc 325cid VIN J 2009
Sierra 1500 V8 5.3L 5328cc 325cid VIN M 2009
Sierra 1500 V8 4.8L 294cid VIN A 2010–2013
Sierra 1500 V8 5.3L 5328cc 325cid VIN 0, VIN 3 2010–2011
Sierra 1500 V8 5.3L 5328cc 325cid VIN 0 2011
Sierra 1500 V8 5.3L 5328cc 325cid VIN 3 2011
Sierra 1500 V6 4.3L 262cid 2012–2013
Sierra 1500 V8 4.8L 294cid 2012–2013
Sierra 1500 V8 5.3L 5328cc 325cid 2012–2013
Sierra 2500 HD V8 6.0L 5967cc 364cid 2005
Sierra 2500 HD V8 6.0L 5967cc 364cid 2007–2009
Sierra 2500 HD V8 6.0L 5967cc 364cid VIN K 2007
Sierra 2500 HD V8 6.6L 6599cc 403cid VIN 6 2007
Sierra 2500 HD V8 6.6L 6599cc 403cid 2008–2009
Sierra 2500 HD V8 6.0L 5967cc 364cid VIN G 2010
Sierra 2500 HD V8 6.0L 5967cc 364cid VIN K 2010
Sierra 2500 HD V8 6.0L 5967cc 364cid 2011–2014
Sierra 3500 HD V8 6.0L 5967cc 364cid 2007–2008
Sierra 3500 HD V8 6.6L 6599cc 403cid 2007–2008
Sierra 3500 HD V8 6.0L 5967cc 364cid VIN K 2009–2010
Sierra 3500 HD V8 6.6L 6599cc 403cid VIN 6 2009
Sierra 3500 HD V8 6.0L 5967cc 364cid VIN G 2010
Sierra 3500 HD V8 6.0L 5967cc 364cid 2011–2014
Sierra 3500 V8 6.0L 5967cc 364cid 2005
Sierra V8 5.3L 5328cc 325cid 2007–2013
Sierra V8 6.2L 6162cc 376cid 2008–2010
Sierra V8 6.2L 6162cc 376cid 2013
Yukon XL 1500 V8 5.3L 5328cc 325cid 2006
Yukon XL 1500 V8 6.2L 6162cc 376cid VIN 8 2007–2008
Yukon XL 1500 V8 5.3L 5328cc 325cid VIN J 2007–2009
Yukon XL 1500 V8 6.0L 5967cc 364cid 2007–2009
Yukon XL 1500 V8 5.3L 5328cc 325cid VIN 0 2007–2011
Yukon XL 1500 V8 5.3L 5328cc 325cid VIN 3 2007–2011
Yukon XL 1500 V8 6.2L 6162cc 376cid 2009–2010
Yukon XL 1500 V8 6.2L 6162cc 376cid VIN 2 2011
Yukon XL 1500 V8 6.2L 6162cc 376cid VIN F 2011
Yukon XL 1500 V8 5.3L 5328cc 325cid 2012–2014
Yukon XL 1500 V8 6.2L 6162cc 376cid 2012
Yukon XL 1500 V8 6.2L 6162cc 376cid VIN 2 2013
Yukon XL 1500 V8 6.2L 6162cc 376cid VIN F 2013–2014
Yukon XL 2500 V8 6.0L 5967cc 364cid 2007–2013
Yukon V8 6.2L 6162cc 376cid 2007–2014
Yukon V8 6.2L 6162cc 376cid VIN 8 2007–2008
Yukon V8 4.8L 294cid 2007–2009
Yukon V8 5.3L 5328cc 325cid VIN J 2007–2009
Yukon V8 5.3L 5328cc 325cid VIN 0 2007–2011
Yukon V8 6.0L 5967cc 364cid 2008–2013
Yukon V8 5.3L 5328cc 325cid VIN 3 2009–2010
Yukon V8 5.3L 5328cc 325cid 2012–2014

GMC Van
Savana 1500 V6 4.3L 262cid 2009–2014
Savana 1500 V8 5.3L 5328cc 325cid 2009–2014
Savana 2500 V8 6.0L 5967cc 364cid VIN B 2011
Savana 2500 V8 4.8L 294cid 2012–2014
Savana 2500 V8 6.0L 5967cc 364cid 2012–2015
Savana 3500 V8 6.0L 5967cc 364cid VIN B 2011
Savana 3500 V8 4.8L 294cid 2012–2014
Savana 3500 V8 6.0L 5967cc 364cid 2012–2015
Savana 4500 V8 6.0L 5967cc 364cid 2010–2015

Hummer Truck
H2 V8 6.2L 6162cc 376cid 2008–2009
H3 V8 5.3L 5328cc 325cid 2008–2010
H3T V8 5.3L 5328cc 325cid VIN L 2009
H3T V8 5.3L 5328cc 325cid VIN P 2010

Isuzu Truck
Ascender L6 4.2L 256cid 2007–2008
NPR-HD V8 6.0L 5967cc 364cid 2008–2009
NPR-HD V8 6.0L 5967cc 364cid 2012–2020
NPR V8 6.0L 5967cc 364cid 2008–2011
NPR V8 6.0L 5967cc 364cid General Motors L96 2012
NPR V8 6.0L 5967cc 364cid General Motors LQ4 2012
NPR V8 6.0L 5967cc 364cid General Motors LQ9 2012
NPR V8 6.0L 5967cc 364cid 2013–2020
NQR V8 6.0L 5967cc 364cid 2022
NRR V8 6.0L 5967cc 364cid 2022

Saab Truck
9-7x L6 4.2L 256cid 2007–2009

Features & Benefits

  • Precision aftermarket replacement part
  • Regulates alternator output voltage
  • Helps maintain proper battery charging
  • Supports stable charging system performance
  • Manufactured to match original specifications
  • Designed for dependable long-term operation
  • Ideal for alternator rebuilding and repair
  • Cross-referenced to OEM and aftermarket part numbers

What Does a Voltage Regulator Do?

The voltage regulator controls the alternator's output by regulating current supplied to the rotor field winding. As electrical demand changes, the regulator continuously adjusts field current to maintain the proper charging voltage for the battery and the vehicle's electrical system.

A properly functioning voltage regulator helps prevent battery overcharging and undercharging while protecting sensitive electrical components from excessive voltage. Because charging system performance depends on the interaction between the regulator, rotor, stator, rectifier, and battery, replacing a faulty regulator is an important step in restoring alternator performance.

Common Signs Replacement Is Needed

Replace the voltage regulator if you notice:

  • Battery overcharging
  • Battery not charging
  • Low charging voltage
  • High charging voltage
  • Battery warning light illuminated
  • Intermittent charging problems
  • Headlights that brighten or dim with engine speed
  • Charging system failure during testing
  • Voltage regulator failure discovered during alternator rebuilding

Installation Recommendations

Installation should be performed by a qualified technician or experienced alternator rebuilder. Before installing the new regulator, inspect the brushes, brush holder, slip rings, rotor, stator, rectifier, wiring, and electrical connections for signs of wear or damage.

Always verify connector configuration and mounting style before installation. After assembly, bench-test the alternator to confirm proper charging voltage and overall charging system performance.

While You're Rebuilding

Inspect other common wear components to help maximize charging system reliability:

Why Buy From RC Auto Electric?

RC Auto Electric specializes in alternator and starter rebuilding components for professional rebuilders, repair shops, automotive technicians, and DIY enthusiasts. Our extensive catalog includes thousands of OEM and aftermarket electrical components backed by accurate cross-reference information to help simplify part identification and reduce ordering mistakes.

Disclaimer

Compatibility information is provided as a reference only. Manufacturing revisions, production changes, and previous rebuilding modifications may affect internal alternator components. Always compare the original part, connector configuration, mounting style, voltage specifications, cross-reference numbers, and product photographs before installation. If you are unsure about compatibility, contact RC Auto Electric before ordering.

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