Cobb 08-18 Subaru WRX STI / 08-14 WRX Wrinkle Black Alternator Cover-COBB-COBB815055
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Cobb 08-18 Subaru WRX STI / 08-14 WRX Wrinkle Black Alternator Cover

COBB
COBB815055
700424676996
Engine Covers
20+ Units In Stock - Ships Next Business Day
$ 105.00
$ 105.00

SKU: B815055   |   UPC: 700424676996

Cobb 08-18 Subaru WRX STI / 08-14 WRX Wrinkle Black Alternator Cover

The Cobb Wrinkle Black Alternator Cover serves as a direct OEM replacement for 2008-2018 Subaru WRX STI and 2008-2014 WRX models. Machined from 6061-T6 billet aluminum and finished in durable wrinkle black powder coat, it shields the alternator from debris while delivering a clean, factory-like engine bay appearance. This lightweight cover (0.4 lbs) installs in minutes for immediate visual and functional gains.

Key Features

  • Billet Aluminum Build: Crafted from 6061-T6 aluminum for strength, heat resistance, and long-term durability in engine environments.
  • Wrinkle Black Powder Coat: Textured finish resists scratches, corrosion, and fading for lasting protection and sharp aesthetics.
  • Direct Bolt-On Design: Matches factory mounting points precisely, requiring no cutting, drilling, or modifications.
  • Engine Bay Protection: Covers alternator fully, guarding against belts, wires, and road contaminants.
  • Lightweight Construction: At 0.4 lbs, adds style without affecting vehicle balance or performance.

Product Notes

  • Replaces factory plastic cover (OEM part numbers 23338AA421 or equivalent).
  • Powder coat withstands engine bay temperatures up to 500°F.
  • MPN 815055 pairs with Cobb valve covers and SF intake for complete engine dress-up.

Installation Notes

  • Professional installation recommended.
  • Remove OEM cover using two 10mm bolts no special tools needed.
  • Uses factory hardware torque to 6 Nm for secure fit.

This Part Fits

Year Make Model Submodel
2008-2018 Subaru WRX STI All (Hatchback)
2008-2014 Subaru Impreza WRX Base, Premium, Limited (Sedan/Hatch)
2008-2014 Subaru Impreza WRX STI All (Hatchback)

Why Choose Cobb?

  • Proven Subaru specialists with 20+ years developing direct-fit parts.
  • USA-made using CNC machining for exact tolerances and reliability.
  • Extensively tested on real-world vehicles for seamless integration.

Frequently Asked Questions

  • Q: Does this cover fit 2015-2018 WRX STI models?
    A: Yes, it bolts directly onto 2008-2018 WRX STI with EJ257 engines using stock locations.
  • Q: What material and finish are used?
    A: Solid 6061-T6 billet aluminum with textured wrinkle black powder coat for heat and wear resistance.
  • Q: What warranty applies and is installation easy?
    A: Backed by Cobb's standard warranty 10-minute install with basic hand tools, no tuning required.

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Protective foam-lined cardboard box, 12" x 9" x 2"
  • Weight: 0.4 lbs (product), 1 lb (shipping)

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