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Constructed of 6061-T6 aircraft grade aluminum or stainless steel
2003-2006 GMC Savana 2500
Measures 1
Dual adjustable chin vents
BBK Under Drive Pulley Kit 6 Rib Serpentine Aluminum Polished - Small Block Ford AS04421 More Spark DurationInstall a set of BBK performance underdrive pulleys and see an average of 8 15 additional horsepower over the stock pulleys. Under drive pulleys increase engine output by reducing the draw of the engines accessories by slowing them down and reducing the HP they use. Additional and significant performance improvements can be seen by reducing the weight of the pulley versus the original pulley which is why we recommend the BBK CNC Machined billet
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