Power Master 12SI 100 Amp Delco Style Alternator — Fits GM Applications

SKU: BCTD_8002
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Reliable Power for GM EnginesThe Power Master 12SI Delco Style ...Read More

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

Reliable Power for GM Engines

The Power Master 12SI Delco Style Alternator is a staple for GM enthusiasts seeking a balance of performance and reliability. With a 100-amp output, this unit is designed to replace factory charging systems, providing the extra current needed for modern electronics and upgraded ignition setups. Its classic natural aluminum finish and straight-mount design make it a perfect fit for a wide range of GM engine bays.

Performance Highlights

  • Style: 12SI GM Race/Street
  • Output: 100 Amps at 12V
  • Wiring: Compatible with 1-wire or 3-wire configurations
  • Pulley: Single V-Belt
  • Mounting: Standard straight mount

Whether you are running a classic restoration or a track-focused build, the 12SI alternator offers the flexibility of both 1-wire and 3-wire installation. This unit is built to withstand the rigors of high-RPM operation while maintaining a steady voltage output. The lightweight aluminum construction aids in heat dissipation, extending the life of the internal components. If you are looking for a dependable, high-output charging solution that maintains a traditional look, this alternator is the ideal choice. Explore our full range of electrical components and performance parts at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

Reliable Power for GM Engines

The Power Master 12SI Delco Style Alternator is a staple for GM enthusiasts seeking a balance of performance and reliability. With a 100-amp output, this unit is designed to replace factory charging systems, providing the extra current needed for modern electronics and upgraded ignition setups. Its classic natural aluminum finish and straight-mount design make it a perfect fit for a wide range of GM engine bays.

Performance Highlights

  • Style: 12SI GM Race/Street
  • Output: 100 Amps at 12V
  • Wiring: Compatible with 1-wire or 3-wire configurations
  • Pulley: Single V-Belt
  • Mounting: Standard straight mount

Whether you are running a classic restoration or a track-focused build, the 12SI alternator offers the flexibility of both 1-wire and 3-wire installation. This unit is built to withstand the rigors of high-RPM operation while maintaining a steady voltage output. The lightweight aluminum construction aids in heat dissipation, extending the life of the internal components. If you are looking for a dependable, high-output charging solution that maintains a traditional look, this alternator is the ideal choice. Explore our full range of electrical components and performance parts at GGCRACING.

Product Details

Product Description

Reliable Power for GM Engines

The Power Master 12SI Delco Style Alternator is a staple for GM enthusiasts seeking a balance of performance and reliability. With a 100-amp output, this unit is designed to replace factory charging systems, providing the extra current needed for modern electronics and upgraded ignition setups. Its classic natural aluminum finish and straight-mount design make it a perfect fit for a wide range of GM engine bays.

Performance Highlights

  • Style: 12SI GM Race/Street
  • Output: 100 Amps at 12V
  • Wiring: Compatible with 1-wire or 3-wire configurations
  • Pulley: Single V-Belt
  • Mounting: Standard straight mount

Whether you are running a classic restoration or a track-focused build, the 12SI alternator offers the flexibility of both 1-wire and 3-wire installation. This unit is built to withstand the rigors of high-RPM operation while maintaining a steady voltage output. The lightweight aluminum construction aids in heat dissipation, extending the life of the internal components. If you are looking for a dependable, high-output charging solution that maintains a traditional look, this alternator is the ideal choice. Explore our full range of electrical components and performance parts at GGCRACING.

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