{"product_id":"dorman-265-903-transmission-oil-pan","title":"Dorman 265-903 Transmission Oil Pan","description":"\u003ch2\u003eDorman 265-903 Transmission Oil Pan\u003c\/h2\u003e\u003cp\u003eThe Dorman 265-903 transmission oil pan is a direct OE-style replacement for select GM trucks and vans that need service or leak repair. Built from steel with a black E-coat finish, it adds a drain plug for cleaner fluid removal before maintenance on Chevrolet Silverado 2500 HD, GMC Sierra 3500 HD, and other listed applications.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSteel construction with corrosion-resistant black E-coat finish\u003c\/li\u003e\n\u003cli\u003eConvenient drain plug for easier transmission fluid service\u003c\/li\u003e\n\u003cli\u003eOne-piece pan and one-piece gasket configuration\u003c\/li\u003e\n\u003cli\u003eIntegrated magnet helps capture normal wear material\u003c\/li\u003e\n\u003cli\u003eIncludes gasket, filter assembly, lid, drain plug, and magnet for a complete repair\u003c\/li\u003e\n\u003cli\u003eStandard replacement design for select GM and Chevrolet vehicles\u003c\/li\u003e\n\u003cli\u003ePart number 265-903 for service identification and ordering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThis transmission oil pan is engineered to match original equipment performance while improving serviceability. The steel pan measures 296 mm long, 477 mm wide, and 83.5 mm at maximum depth, with 18 mounting holes and a 14 mm drain thread diameter. It is designed for vehicles such as Chevrolet Express 2500, Chevrolet Silverado 3500 HD, GMC Savana 3500, and GMC Sierra 2500 HD applications listed in the fitment data. The included filter assembly, gasket, and integrated magnet support a complete transmission pan service, while the drain plug helps reduce mess during fluid changes. If you are replacing a leaking pan or performing routine maintenance, Dorman 265-903 provides a practical OE-style solution for GM transmission service.\u003c\/p\u003e\u003cp\u003eThis part cross-references GM OE 24226851 for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Problems This Part Can Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTransmission fluid leaks from a damaged or corroded pan\u003c\/li\u003e\n\u003cli\u003eMessy fluid removal during pan service\u003c\/li\u003e\n\u003cli\u003eWorn or deteriorated pan gasket sealing surfaces\u003c\/li\u003e\n\u003cli\u003eMetal debris accumulation in the transmission pan\u003c\/li\u003e\n\u003cli\u003eService delays caused by a missing or damaged drain plug\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eDrain the transmission fluid through the built-in plug before removing the pan to reduce spillage. Inspect the mating surface, clean the transmission case, and verify the gasket seats evenly before tightening fasteners. Confirm fitment for your exact Chevrolet Silverado 2500 HD, GMC Sierra 3500 HD, or other listed GM application before installation. Part number 265-903 should be matched to the vehicle’s transmission service requirements and mounting pattern.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman OE FIX parts are built to address common service issues with an upgraded design while maintaining OE-style fit and function. The steel construction and E-coat finish add corrosion resistance for long-term service in demanding transmission applications.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52752712499381,"sku":"BKKY-265-903","price":139.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_265903_TOP.jpg?v=1782885126","url":"https:\/\/www.partcatalog.com\/products\/dorman-265-903-transmission-oil-pan","provider":"PartCatalog","version":"1.0","type":"link"}