2001 duramax fuel filter | eBay Find great deals on eBay for 2001 duramax fuel filter. Shop with confidence. Skip to main content. eBay Logo: Shop by category. 2001-2004 Chevrolet Silverado GMC Sierra 6 Duramax Diesel Fuel Filter Kit OEM. Brand New. $496. Guaranteed by Fri, Jun. 28. Buy It Now +$16 shipping. 6 Duramax Fuel Filter Replacement & Water-Separator How to replace the fuel filter and drain the fuel water separator on a 6 Duramax. Covering 2001 to 2016 model year, these procedures detail removal and installation of a new fuel filter on any 6 Duramax diesel in addition to draining the fuel water separator.