Mechman 170 AMP Racing Alternator GM LS Truck

Mechman 170 AMP Racing Alternator – GM LS Truck

The Mechman 170 AMP Racing Alternator for GM LS truck platforms delivers a major upgrade in durability and output compared to factory large-case truck alternators. Engineered with advanced 6-phase technology, this unit produces over 120 amps at idle and features a high-RPM-friendly stock-diameter pulley, making it ideal for racing, performance builds, and LS engine swap applications. Its robust internal components—including twin steel fans, a hairpin stator, and oversized diodes—ensure exceptional reliability even in harsh, high-heat environments.

Key Features

• 6-phase alternator design for improved efficiency and output
• Produces 120+ amps at idle
• High-RPM capable with stock-diameter alternator pulley
• Twin steel internal fans for superior cooling
• Hairpin stator for enhanced high-RPM durability
• Twin pure copper rectifier plates with 12 oversized diodes
• Ideal for racing and high-demand electrical systems

Easy Installation

Designed for simplicity, the internal voltage regulator makes this alternator a perfect fit for LS swaps or custom wiring setups. Installation requires:

• 4-gauge power and ground cables to the battery
• One ignition-switched excitation wire to the alternator plug
• No complex wiring or factory harness required

Ideal For

• GM LS truck applications
• LS engine swaps
• Racing builds and high-RPM performance engines
• High-output electrical systems (fuel pumps, fans, audio, etc.)