Cobb Tuning Subaru Redline Carbon Fiber Alternator Cover 2008-2021 STI, 2008-2014 WRX - 422600 L19 That's where the 3x thicker

That's where the 3x thicker Inlet Gasket's extra thickness comes in handy

Input Shaft Diameter (inches): 1"

The billet aluminum base is anodized in your choice of red or black to help set the mood and is internally threaded to provide a tight fit onto the shifter shaft that won't come loose in the most frenzied of gear changes

but it is not required with the new design

Cobb Tuning Subaru Redline Carbon Fiber Alternator Cover 2008-2021 STI, 2008-2014 WRX - 422600 L19 That's where the 3x thickerEMISSIONS This part is not an emissions related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION The COBB Redline Carbon Fiber Alternator Cover is constructed of 2x2 twill carbon fiber sheet and finished off with a high quality clear coat that will stand up to under hood temps. A bespoke COBB Redline badge adds a subtle touch. Installation is a breeze with the included hardware. WHY? Add a touch of class to your Subaru's