Perrin Lightweight Alternator Pulley Red — Fits 2004-2006 Subaru WRX STI EJ Engines

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SKU: PERPSP-ENG-118RD
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Sale price$58.00 Regular price$61.00
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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

About Perrin Performance

Perrin Performance engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Perrin Performance lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Ignite Performance with Perrin Red Alternator Pulley

Inject a vibrant performance boost into your 2004-2006 Subaru WRX STI EJ engine with the Perrin Performance Lightweight Alternator Pulley in a bold red finish. This high-performance pulley is engineered to reduce the rotational mass of your engine's accessory drive, directly translating to quicker engine revs and a more immediate throttle response. By minimizing the power lost to spinning heavier stock components, this upgrade effectively frees up horsepower and torque, providing a more engaging and powerful driving experience.

Durable Construction and Striking Aesthetics

Manufactured from premium, aerospace-grade aluminum, the Perrin alternator pulley is not only significantly lighter than the OEM part but also exceptionally durable. Its precision-machined design ensures perfect balance and smooth operation, safeguarding your alternator while enhancing engine efficiency. The brilliant red anodized finish adds a distinctive, race-inspired look to your engine bay, making it stand out. Installation is a straightforward process, perfect for enthusiasts seeking a noticeable upgrade.

  • Reduces rotating weight for enhanced acceleration
  • Improves engine's power delivery and responsiveness
  • Crafted from lightweight, high-strength aluminum
  • Precision fitment for 2004-2006 Subaru WRX STI EJ engines
  • Aggressive red anodized finish for custom look

Find this performance-enhancing Perrin pulley and more at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Perrin Performance

Perrin Performance engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Perrin Performance lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Ignite Performance with Perrin Red Alternator Pulley

Inject a vibrant performance boost into your 2004-2006 Subaru WRX STI EJ engine with the Perrin Performance Lightweight Alternator Pulley in a bold red finish. This high-performance pulley is engineered to reduce the rotational mass of your engine's accessory drive, directly translating to quicker engine revs and a more immediate throttle response. By minimizing the power lost to spinning heavier stock components, this upgrade effectively frees up horsepower and torque, providing a more engaging and powerful driving experience.

Durable Construction and Striking Aesthetics

Manufactured from premium, aerospace-grade aluminum, the Perrin alternator pulley is not only significantly lighter than the OEM part but also exceptionally durable. Its precision-machined design ensures perfect balance and smooth operation, safeguarding your alternator while enhancing engine efficiency. The brilliant red anodized finish adds a distinctive, race-inspired look to your engine bay, making it stand out. Installation is a straightforward process, perfect for enthusiasts seeking a noticeable upgrade.

  • Reduces rotating weight for enhanced acceleration
  • Improves engine's power delivery and responsiveness
  • Crafted from lightweight, high-strength aluminum
  • Precision fitment for 2004-2006 Subaru WRX STI EJ engines
  • Aggressive red anodized finish for custom look

Find this performance-enhancing Perrin pulley and more at GGCRACING.

Product Details

Product Description

About Perrin Performance

Perrin Performance engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Perrin Performance lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Ignite Performance with Perrin Red Alternator Pulley

Inject a vibrant performance boost into your 2004-2006 Subaru WRX STI EJ engine with the Perrin Performance Lightweight Alternator Pulley in a bold red finish. This high-performance pulley is engineered to reduce the rotational mass of your engine's accessory drive, directly translating to quicker engine revs and a more immediate throttle response. By minimizing the power lost to spinning heavier stock components, this upgrade effectively frees up horsepower and torque, providing a more engaging and powerful driving experience.

Durable Construction and Striking Aesthetics

Manufactured from premium, aerospace-grade aluminum, the Perrin alternator pulley is not only significantly lighter than the OEM part but also exceptionally durable. Its precision-machined design ensures perfect balance and smooth operation, safeguarding your alternator while enhancing engine efficiency. The brilliant red anodized finish adds a distinctive, race-inspired look to your engine bay, making it stand out. Installation is a straightforward process, perfect for enthusiasts seeking a noticeable upgrade.

  • Reduces rotating weight for enhanced acceleration
  • Improves engine's power delivery and responsiveness
  • Crafted from lightweight, high-strength aluminum
  • Precision fitment for 2004-2006 Subaru WRX STI EJ engines
  • Aggressive red anodized finish for custom look

Find this performance-enhancing Perrin pulley and more at GGCRACING.

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