PROFORM 141-657 Chrome GM 10SI 100 Amp 1-Wire Alternator with Bowtie Logo

Upgrade your classic GM charging system with the PROFORM 141-657 chrome 10SI alternator. Designed for 12-volt applications, this 100-amp alternator provides dependable electrical output for street rods, muscle cars, restorations, and custom builds. Its 1-wire configuration simplifies installation by using a single connection for voltage sensing and charging, making it a practical choice for compatible GM electrical systems.
The PROFORM 141-657 features a polished chrome finish and an aluminum case that provide a clean, performance-oriented appearance under the hood. A single V-belt pulley supports traditional accessory-drive setups, while the distinctive Chevy Bowtie logo adds an authentic GM styling detail. The 10SI design is widely recognized for its compatibility with many classic Chevrolet and GM applications, but vehicle-specific fitment should be confirmed before installation.
Feature: 100-amp output supports the electrical demands of upgraded lighting, ignition, audio, and accessory systems. Feature: 12-volt operation is suited for compatible classic GM charging systems. Feature: 1-wire design helps streamline wiring and installation. Feature: 10SI configuration is commonly used for vintage Chevrolet and GM applications. Feature: Single V-belt pulley supports traditional belt-driven accessory systems. Feature: Chrome-plated aluminum case delivers a bright, durable engine-compartment finish. Feature: Chevy Bowtie logo adds recognizable original-equipment-inspired styling. PROFORM part number 141-657 is supplied as an individual alternator for compatible applications.

Features:

• 100-amp alternator output

• 12-volt electrical operation

• 1-wire configuration for simplified installation

• 10SI-style design for compatible GM applications

• Single V-belt pulley

• Chrome-plated aluminum case

• Chevy Bowtie logo

• Suitable for compatible classic Chevrolet and GM vehicles