WAI 7858N Alternator

WAI 7858N Alternator Overview

The WAI 7858N is a 105-amp alternator built for vehicles that need steady charging output for modern electrical loads. This 100% new unit uses proprietary components and manufacturing processes to support long service life and consistent performance.

Compatible with 1988 Chevrolet Caprice w/HBW, 1987 Chevrolet Camaro, and 1987 Pontiac Firebird, this DELCO-family alternator is a direct-fit option for select GM applications. The WAI 7858N also cross-references 7858-11 and 7867-11 for the same application.

Key Features

• 105-amp amperage rating for dependable charging output
• 100% new construction, not remanufactured
• Internal regulator for integrated voltage control
• External fan design
• Clockwise (right) rotation
• Serpentine pulley with 5 grooves included
• DELCO family alternator

Detailed Product Description

Built for select Chevrolet and Pontiac applications, the WAI 7858N alternator supports the electrical demands of the 1988 Chevrolet Caprice w/HBW, 1987 Chevrolet Camaro, and 1987 Pontiac Firebird. Its 105-amp output helps maintain charging performance for vehicle systems that rely on stable voltage, while the internal regulator simplifies the charging system layout. The included serpentine pulley and clockwise rotation match the listed OE-style configuration for these vehicles.

Common Problems This Alternator Can Address

• Battery warning light caused by weak charging output
• Low system voltage at idle or under electrical load
• Dim headlights or inconsistent accessory performance
• Charging system failure from a worn or damaged alternator
• Voltage instability in vehicles with aging electrical components

Installation Notes and Tips

Verify pulley groove count, belt type, rotation direction, and regulator style before installation. This alternator is specified for serpentine-belt applications with clockwise rotation and an internal regulator. Confirm vehicle fitment by year, make, model, and notes, especially for the 1988 Chevrolet Caprice w/HBW application.

Quality Assurance

WAI builds this alternator as a new replacement unit using proprietary components and processes to support maximum life and performance. The 7858N is engineered to deliver the amp output needed for today’s vehicle electrical systems.