1991 Cadillac DeVille Alternator Parts

The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.

Product Features:

• Application matched components ensure the charging system can be returned to like new condition.

The charging system has been required as long as we have had a need for an electrical system and from research it’s been since the requirement of horns in motor vehicle in the early 1900’s. An alternator is a voltage generator that uses mechanical energy to rotate a set of magnets within a field of windings called a stator. The alternating current (AC) voltage created by the spinning magnetic field is converted into a usable direct current (DC) voltage with a rectifier and then regulated by a voltage regulator so that the voltage level in the electrical system stays within a specific operating range. The alternator provides all the voltage needed to operate a vehicle, the battery is only used as a reserve for heavier load conditions, as a voltage source for the engine starting system, and to supply a small amount of voltage to the electromagnets in the alternator which boosts the magnetic field in the alternator and increases voltage output.

Product Features:

• Application matched components ensure the charging system can be returned to like new condition.

The Carquest Premium Alternator delivers exceptional reliability and performance, making it a top choice for your vehicle’s electrical system. Remanufactured to meet or exceed OE standards, this alternator ensures a perfect fit, form, and function. With a robust 140-amp output and 12.0 VDC voltage, it provides consistent power for demanding applications. Each unit undergoes a rigorous triple-testing process, from components to final assembly, guaranteeing dependable service. All wear components, including brushes, bushings, and bearings, are replaced with brand-new parts during the remanufacturing process, enhancing durability and longevity. Designed with a clockwise rotation direction, it aligns seamlessly with Delco family systems. For added support, Carquest offers a Tech Hotline staffed by ASE Certified Technicians to assist with installation or troubleshooting. Choose this alternator for superior quality, reliable performance, and peace of mind on the road.

Product Features:

• Each unit is triple-tested to ensure quality and performance
• All wear components (brushes, bushings, and bearings) are replaced with all NEW components in the remanufacturing process
• Tech Hotline with trained ASE Certified Technicians: Call Carquest Technical Support at 1-800-228-9672
• Designed to meet or exceed OE standards, ensuring precise fit, form, and function for seamless integration into your vehicle’s electrical system.
• Robust 140-amp output delivers consistent power, making it ideal for demanding applications and enhancing overall vehicle performance.

Carquest Professional alternators are 100% new units that are built to meet or exceed original equipment (O.E.) specifications. Our new alternators are engineered and built by an IATF/TS 16949 certified supplier that meets the highest standards achievable. Carquest Professional alternators are re-engineered to include improvements and enhancements (where applicable) to the OE design to extend longevity and service life. Our new alternators are built with all new components and are 100% triple tested to ensure high quality that is backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:

• Designed to meet or exceed OE specifications for fit, form and function
• Manufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
• All new components are utilized to ensure long service life
• Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
• Internal electronics are upgraded for heavy duty reliability (where applicable)
• Regulators and rectifiers are 100% electronically load tested for reliable charging performance
• Application-specific technical bulletins included where applicable
• All units are 100% triple tested to ensure quality and performance
• Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
• Rotors and stators are load tested and double insulated for maximum charging performance

This 140-amp alternator from WAI is a premium choice for those seeking reliability and performance. Engineered to meet or exceed OEM specifications, it ensures a perfect fit and hassle-free installation. Its advanced voltage regulator protection guards against transient voltage spikes, preventing potential battery damage, while the low saturation voltage minimizes heat dissipation for enhanced durability. The high-power rectifier assembly, featuring open junction press-fit diodes, is designed to keep the unit running cool even under demanding conditions. Fully compliant with ECU communication, this alternator guarantees seamless integration with your vehicle’s system. Each unit comes with a printed copy of test results, providing transparency and confidence in its performance from the very first use. Built for long-lasting efficiency, this alternator delivers exceptional value for your vehicle’s electrical system.

Product Features:

• Engineered to meet or exceed OEM specifications for a perfect fit and hassle-free installation.
• Voltage regulator protection – load dump protected against transient voltage spikes avoiding potential battery damage. Low saturation voltage results in lower heat dissipation. Fully compliant in communication with ECU.
• High power rectifier assembly is designed with higher power open junction press fit diodes to keep the units running cool.
• Each unit includes a printed copy of the test results so you know exactly what to expect from our parts right from the first time they power on.
• Built with durability in mind, the advanced design minimizes heat dissipation, ensuring long-lasting efficiency and reliable performance under demanding conditions.

Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:

• Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
• Sealed connections (where applicable) to prevent environmental corrosion and performance issues
• Global coverage for import and/or domestic applications
• OE specified wire gauge to ensure a reliable electrical connection
• Designed to meet or exceed OE specifications in form, fit and function

Value-priced bearing meets all cataloged application requirements.

Product Features:

• Brand may vary by location