MPA Electrical 7864604N Alternator

OE-Style Alternator Replacement

The MPA Electrical 7864604N is a new 12-volt alternator built as a direct OE replacement for select GM applications. It combines fit, form, and function with updated testing methods to support dependable charging performance in vehicles such as the Chevrolet Caprice, Cadillac Brougham, Cadillac Commercial Chassis, Pontiac Firebird, and Buick Regal.

MPA Electrical’s New product line focuses on replacement components that match original equipment specifications for everyday service and repair. For buyers searching for a 1989-1993 Chevrolet Caprice alternator or a 1990-1992 Cadillac Brougham charging system replacement, this part number 7864604N is built to align with the original application.

Key Features

• 12.0-volt alternator for standard charging-system replacement
• Internal regulator for simplified electrical control
• External fan design
• Clockwise rotation
• Included pulley with 6-groove serpentine belt setup
• Delco family configuration
• Rear view main mounting ear at 6 o’clock plug clock position: 4
• No decoupled or clutch pulley

Detailed Product Overview

The MPA Electrical 7864604N alternator is engineered for direct replacement service where OE-style fitment matters. Its Delco-style layout, internal regulator, and serpentine pulley configuration support the original charging-system architecture used across the listed GM vehicles. This makes it a practical choice for restoring charging output on a 1987 Buick Regal, 1989 Pontiac Firebird, and related applications.

This part cross-references OE-style numbers such as 1101183 and 10463027 for the same application. If you are replacing a worn alternator on a 1989-1993 Chevrolet Caprice or a 1990-1992 Cadillac Brougham, part number 7864604N provides a specification-matched option for the original mounting and belt arrangement.

Common Problems This Part Can Address

• Low battery charging caused by alternator wear
• Dim lights or electrical instability from weak output
• Battery warning light triggered by charging-system faults
• Noise or belt-related issues from a failing pulley assembly
• Starting problems linked to insufficient alternator performance

Installation Notes and Tips

Verify pulley groove count, belt type, rotation direction, and plug clock position before installation. Confirm the vehicle uses a serpentine belt and the correct Delco-style mounting layout. For best results, inspect the battery, belt condition, and charging connections during replacement so the new alternator can operate within the proper system range.

Quality Assurance

MPA Electrical New alternators are produced as OE replacement parts with fit, form, and function in mind, and they are validated using current testing technology to help maintain consistent quality. Part number 7864604N is built for direct replacement service in the listed Chevrolet, Cadillac, Pontiac, and Buick applications.