Trans-Dapt Performance Products polished aluminum Alternator pulleys are manufactured from 356 aluminum alloy, heat treated to T6 specifications, then given a sharp polished finish.
 
Part # ProductEngineFinishMill Pattern Media
6067 Universal Fit Wire Looms with Ball Milled PINSTRIPES. Fits Wires up to 8" Polished AluminumPinstripes
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$96.79
6083 Universal Fit Wire Looms with Ball Milled FLAMES. Fits Wires up to 8" Polished AluminumFlames
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$100.07
 
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http://hedman.com/images/ePIM/original/6083.jpg