{"product_id":"gates-31803-fuel-tank-cap","title":"Gates 31803 Fuel Tank Cap","description":"\u003ch2\u003eGates 31803 Saddle Tank Fuel Cap\u003c\/h2\u003e\u003cp\u003eThe Gates 31803 saddle tank fuel cap is built with solid brass construction and a heavy metal design throughout for dependable service on fuel tank applications. It is a vented, female-thread cap with an 8.25-inch chain and fuse plug, made to meet I.C.C. requirements.\u003c\/p\u003e\u003cp\u003eFor buyers searching for a replacement saddle tank fuel cap for truck and commercial fuel systems, this Gates fuel tank cap offers the correct thread specification and a direct hardware-style replacement format. It is a practical choice for maintaining secure tank closure on compatible saddle tank setups.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSolid brass construction for durable fuel system service\u003c\/li\u003e\n\u003cli\u003eVented design for proper tank breathing\u003c\/li\u003e\n\u003cli\u003eFemale thread cam type\u003c\/li\u003e\n\u003cli\u003e2\" x 11.5 NPSM thread size\u003c\/li\u003e\n\u003cli\u003e8.25-inch chain length\u003c\/li\u003e\n\u003cli\u003eCross bar length: 3.52 inches\u003c\/li\u003e\n\u003cli\u003eShell diameter: 2.77 inches\u003c\/li\u003e\n\u003cli\u003eIncludes fuse plug\u003c\/li\u003e\n\u003cli\u003eMeets I.C.C. requirements\u003c\/li\u003e\n\u003cli\u003eGates 31803 part number for direct reference\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eThe Gates Saddle Tank Fuel Cap line is focused on fuel tank hardware for commercial and heavy-duty applications where correct thread fit, venting, and durable metal construction matter. Part number 31803 uses a 2\" x 11.5 NPSM female-thread design and a vented configuration to support proper tank operation. If you are replacing a worn or missing cap on a saddle tank fuel system, Gates 31803 provides a straightforward replacement option with the dimensions and construction details buyers look for.\u003c\/p\u003e\u003cp\u003eThis part cross-references Four Seasons 46149 for the same application. It is also commonly searched as Gates 31803 fuel tank cap, saddle tank fuel cap, and vented brass fuel cap for truck fuel systems.\u003c\/p\u003e\u003ch2\u003eCommon Issues This Cap Can Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMissing or damaged saddle tank fuel cap\u003c\/li\u003e\n\u003cli\u003eFuel tank closure problems caused by worn threads\u003c\/li\u003e\n\u003cli\u003eImproper tank venting from a failed cap\u003c\/li\u003e\n\u003cli\u003eFuel system contamination from an unsecured opening\u003c\/li\u003e\n\u003cli\u003eReplacement needs for commercial truck fuel tank hardware\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the tank opening thread size before ordering. This cap uses a 2\" x 11.5 NPSM female thread, so matching the tank neck specification is essential for proper installation. Confirm the cap style, venting requirement, and chain length against the original hardware before use. For vehicle-specific searches, buyers often look for Gates 31803 on truck and commercial applications such as Ford F-350 and Chevrolet C\/K fuel tank setups, but final selection should always be based on the tank thread and cap style.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eGates manufactures this cap with heavy metal construction and solid brass material, and the part is stated to meet I.C.C. requirements. That combination makes the Gates 31803 a specification-driven replacement for fuel tank service where durability and correct fit are priorities.\u003c\/p\u003e","brand":"Gates","offers":[{"title":"Default Title","offer_id":52078458634421,"sku":"BBSC-31803","price":43.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/ZO_31803_Fro.jpg?v=1775146572","url":"https:\/\/www.partcatalog.com\/products\/gates-31803-fuel-tank-cap","provider":"PartCatalog","version":"1.0","type":"link"}