{"product_id":"tinwid1919-diesel-fuel-cap-3-nominal-for-international-trucks-aluminum-non-vented-with-stainless-safety-chain","title":"TINWID1919 Diesel Fuel Cap 3½\" Nominal for International Trucks — Aluminum Non‑Vented with Stainless Safety Chain","description":"\u003cp\u003e\u003cstrong\u003eTINWID1919's 3½\" nominal diesel fuel cap is an aluminum, non-locking replacement made to fit International\/Navistar tanks requiring a vented cap and ships with a stainless steel safety chain.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you operate or maintain International trucks that list part number 3591620C2, this cap is designed as a direct-fit replacement for the common 3 1\/2\" opening. The cap is machined from lightweight aluminum for corrosion resistance and includes a durable stainless steel safety chain so you won't lose the cap while fueling. It is a non-vented style, so confirm your fuel tank uses an external venting system before purchase.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I confirm this cap fits my truck?\u003c\/h3\u003e\n\u003cp\u003eMeasure the diameter of your existing filler neck and compare it to the 3½\" nominal size; this product replaces caps that match International\/Navistar part 3591620C2. Check whether your original cap is non-locking and non-vented to ensure compatibility. If your current cap has a keyed lock or internal vent, this unit will not be a functional swap.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeasure across the filler opening — should be approximately 3.5 inches\u003c\/li\u003e\n  \u003cli\u003eVerify your original part number or compare to 3591620C2\u003c\/li\u003e\n  \u003cli\u003eConfirm your tank uses external venting (tank must be vented)\u003c\/li\u003e\n  \u003cli\u003eEnsure your truck accepts a non-locking cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the construction and durability features?\u003c\/h3\u003e\n\u003cp\u003eThe cap is formed from aluminum to resist rust and reduce weight compared with steel alternatives. It comes with a stainless steel safety chain that prevents loss during refueling and improves longevity in corrosive environments. The non-vented design keeps contaminants out when paired with a vented tank system.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLightweight, corrosion-resistant aluminum body\u003c\/li\u003e\n  \u003cli\u003eStainless steel safety chain for secure retention\u003c\/li\u003e\n  \u003cli\u003eNon-vented construction — suitable only for vented tanks\u003c\/li\u003e\n  \u003cli\u003eSimple, durable fit for frequent fueling use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use this if my tank requires venting?\u003c\/h3\u003e\n\u003cp\u003eYes — this cap is meant for fuel systems that already incorporate proper venting elsewhere on the tank. Because the cap itself is non-vented, it will not provide vapor relief; using it on a sealed, non-vented tank can cause pressure issues. Always follow your vehicle manufacturer’s ventilation requirements.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned specifically for tanks with independent venting\u003c\/li\u003e\n  \u003cli\u003eDo not use on sealed or non-vented tanks\u003c\/li\u003e\n  \u003cli\u003ePrevents ingress of dirt and moisture when paired with vents\u003c\/li\u003e\n  \u003cli\u003eCheck vehicle service manual for vent placement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Fleet managers, owner-operators, mechanics, and maintenance teams who run International\/Navistar trucks requiring a 3½\" nominal non-locking fuel cap will find this a straightforward replacement. It's ideal when you need a corrosion-resistant aluminum cap with a retention chain and a direct match to part number 3591620C2. If your vehicle needs a locking or vented cap, consider an alternate model; otherwise this cap provides a simple, durable, low-maintenance solution for compliant, vented fuel systems.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this cap fit International\/Navistar part 3591620C2?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This TINWID1919 cap is made as a replacement for International\/Navistar part 3591620C2 with a 3½\" nominal opening.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this cap on a sealed fuel tank?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This is a non-vented cap and requires a fuel tank that is vented elsewhere to avoid pressure problems.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"TINWID1919","offers":[{"title":"Default Title","offer_id":48085674393758,"sku":"B0CH6JKXLS","price":45.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/tinwid1919-front-view-fuel-cap_1e7ecc4f-02d2-46d6-ac8b-5c1143bf48a8.jpg?v=1785876663","url":"https:\/\/northtrailauto.ca\/products\/tinwid1919-diesel-fuel-cap-3-nominal-for-international-trucks-aluminum-non-vented-with-stainless-safety-chain","provider":"North Trail Auto","version":"1.0","type":"link"}