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27SI Military Alternator 12V 100A for Humvee HMMWV CUCV M1008 M1009 10459234

27SI Military Alternator 12V 100A for Humvee HMMWV CUCV M1008 M1009 10459234

SKU:400-12402

Regular price £450.00 GBP
Regular price £540.00 GBP Sale price £450.00 GBP
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27SI Series Military Alternator 12V 100A

Heavy-Duty Isolated Ground Tactical Power Solution

This 27SI Series alternator is a premium aftermarket replacement specifically designed for high-demand military and industrial applications. Engineered for the AM General HMMWV (Humvee) and Chevy/GMC CUCV series, this unit provides a stable 100 Amp output at 12 Volts. Unlike standard civilian alternators, this model features an Isolated Ground system, ensuring reliable electrical performance in complex tactical wiring configurations.

MILITARY GRADE: Features heavy-duty internal components designed to withstand high vibration and harsh environmental conditions common in tactical field use.

Key Features

  • Isolated Ground: Military spec wiring compliance
  • J-180 Hinge Mount: Standard heavy-duty fitment
  • IREF Design: Internal Regulator, External Fan
  • 100A High Output: Reliable power for tactical gear

Technical Specs

Voltage 12V
Amperage 100A
Rotation CW (Clockwise)
Series Delco 27SI Type 100
Mounting J-180 Hinge
Polarity Isolated Ground

Compatibility / Fitment Guide

Make / System Model / Application Notes
AM General HMMWV (Humvee) M998 Series Standard 12V 100A Upgrade
GMC / Chevrolet CUCV M1008, M1009, M1028 Commonly used in Dual Alt systems
Industrial Heavy Duty/Military Tactical Gear J180 Mount Applications

OEM Cross Reference

Delco Remy 10459234, 1105500, 1117253, 1117231
Lester 7847, 7157MN
Wilson 90-01-3117N
AC Delco 321-744, 321-746

Questions & Answers

Is this suitable for a standard civilian pickup truck?

This is a heavy-duty J-180 mount alternator with isolated ground. While it fits the physical mount of many heavy engines, it is specifically designed for the military wiring of vehicles like the Humvee and CUCV. Professional installation is recommended to ensure correct ground termination.

How do I know if it is compatible?

We recommend checking your original part number against the cross-reference list. This unit replaces the common military Delco numbers 10459234 and 1105500.

Does it include the pulley?

This specific listing is for the alternator unit. Depending on your specific military configuration (V-belt or Serpentine), you may need to transfer your existing military pulley to this new unit.

Note: Please verify your original part number against the references above at 4drive.co.uk before purchasing.

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Shipping calculated at checkout. Free shipping over £150. Terms apply