{"product_id":"premium-guard-df4509-fuel-filter-secondary","title":"Premium Guard DF4509 Fuel Filter - Secondary","description":"\u003ch2\u003eFuel Filter Overview\u003c\/h2\u003e\u003cp\u003ePremium Guard DF4509 is a specific-fit diesel fuel filter for heavy-duty applications that use a spin-on design with a 3\/4\"-16 inlet thread. It is built for diesel fuel systems and includes a gasket or seal for service replacement. This part cross-references Wix 33382 and Baldwin BF719 for the same application.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSpecific-fit diesel fuel filter for targeted applications\u003c\/li\u003e\n\u003cli\u003eSpin-on mounting type for straightforward service replacement\u003c\/li\u003e\n\u003cli\u003e3\/4\"-16 inlet thread for matching fuel system connections\u003c\/li\u003e\n\u003cli\u003eGasket or seal included for proper sealing at installation\u003c\/li\u003e\n\u003cli\u003eRegular grade construction for standard fuel filtration service\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment Details\u003c\/h2\u003e\u003cp\u003eCompatible with Isuzu FVR, 1988-1992 and 1994-2010; Isuzu FXR, 2004-2010; Isuzu FTR, 1988-1990, 1991, and 1992-2009; Isuzu HTR, 2005-2008, secondary; Isuzu HVR, 2005-2008, secondary; Isuzu HXR, 2006, secondary; Chevrolet W3500 Tiltmaster, 1999-2004; Chevrolet W4500 Tiltmaster, 1999-2004; Chevrolet W5500 Tiltmaster, 1988-2004; Chevrolet W5500HD Tiltmaster, 2004; GMC W3500 Forward, 1999-2004; GMC W4500 Forward, 1999-2004; GMC W5500 Forward, 1988-2004; GMC W5500HD Forward, 2004; Isuzu FRR, 1995-2004, secondary and N\/A; Isuzu FSR, 1987-1991, 1992-1994, 1995-1998, 1998, 1999, and 2000-2002, secondary and N\/A; Isuzu NPR, 1998; Chevrolet W6500 Tiltmaster, 1987-1996; Chevrolet W7500 Tiltmaster, 1984-1996; GMC W6500 Forward, 1987-1996; GMC W7500 Forward, 1984-1996; Isuzu NRR, 1988-1994; Isuzu EVR, 1987-1993.\u003c\/p\u003e\u003ch2\u003eCommon Replacement Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacing a clogged diesel fuel filter\u003c\/li\u003e\n\u003cli\u003eRestoring fuel flow in a restricted fuel system\u003c\/li\u003e\n\u003cli\u003eAddressing hard-start or fuel starvation symptoms caused by contamination\u003c\/li\u003e\n\u003cli\u003eServicing a spin-on filter during routine diesel maintenance\u003c\/li\u003e\n\u003cli\u003eMatching a specific-fit filter for heavy-duty truck applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the inlet thread, mounting style, and seal condition before installation. Use the vehicle’s service procedure to prime the diesel fuel system after replacement, and confirm the filter location and application notes, including secondary-position listings where shown.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003ePremium Guard DF4509 is a specific-fit replacement filter built for diesel fuel service and application matching across listed Isuzu, Chevrolet, and GMC models. The part number DF4509 is also referenced by multiple aftermarket cross numbers for the same application.\u003c\/p\u003e","brand":"Premium Guard","offers":[{"title":"Default Title","offer_id":53519196848309,"sku":"FCJP-DF4509","price":25.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/PG_DF4509_Fro.jpg?v=1791957510","url":"https:\/\/www.partcatalog.com\/products\/premium-guard-df4509-fuel-filter-secondary","provider":"PartCatalog","version":"1.0","type":"link"}