{"product_id":"tinwid1919-3-fuel-cap-for-volvo-mack-trucks-non-locking-non-vented-oem-fit-replaces-20770691-20770657","title":"TINWID1919 3\" Fuel Cap for Volvo \u0026 Mack Trucks - Non-Locking Non-Vented, OEM Fit (Replaces 20770691\/20770657)","description":"\u003cp\u003e\u003cstrong\u003eTINWID1919's 3-inch non-locking fuel cap replaces 20770691\/20770657 for select Volvo and Mack diesel tanks, providing a reliable, low-sulfur labeled closure designed to meet OEM fit and function.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis fuel cap is built for heavy-duty trucks that use low-sulfur diesel or PNG tanks from 2010 onward. It is a non-vented, across-threads 3-inch cap engineered to match the original equipment's dimensions and performance requirements so you get a secure seal without unnecessary modifications. The design focuses on compatibility, durability, and straightforward serviceability for fleet or owner-operator needs.\u003c\/p\u003e\n\n\u003ch3\u003eWill this cap fit my Volvo or Mack truck?\u003c\/h3\u003e\n\u003cp\u003eThe TINWID1919 3” cap fits select Volvo and Mack diesel tanks labeled for low-sulfur diesel or PNG, typically 2010 models and later. Check your tank threading and label to confirm compatibility; the cap replaces part numbers 20770691 and 20770657.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits across-threads 3-inch fuel tank openings\u003c\/li\u003e\n  \u003cli\u003eCompatible with many 2010+ Volvo and Mack low-sulfur labeled tanks\u003c\/li\u003e\n  \u003cli\u003eDirect replacement for part numbers 20770691 and 20770657\u003c\/li\u003e\n  \u003cli\u003eNot vented — requires a vented tank system to relieve pressure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the non-locking, non-vented design affect operation?\u003c\/h3\u003e\n\u003cp\u003eBeing non-locking, this cap allows quick access for routine fueling without keys or extra hardware. Its non-vented construction means the vehicle’s fuel system must include proper venting elsewhere; the cap itself provides a pressure-tight seal to prevent spills and contamination when the tank’s venting is handled by the vehicle.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFast removal and installation — no key required\u003c\/li\u003e\n  \u003cli\u003eTight, across-threads seal reduces leakage and debris entry\u003c\/li\u003e\n  \u003cli\u003eRequires factory or aftermarket tank venting for safe operation\u003c\/li\u003e\n  \u003cli\u003eSimple part swap for maintenance or replacement needs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and standards does this cap meet?\u003c\/h3\u003e\n\u003cp\u003eManufactured to match OEM specifications for fit, form, and function, the cap is produced with durable materials suitable for diesel environments. It’s intended to meet the tolerances and interface points used by Volvo and Mack, ensuring proper seating and longevity under normal commercial use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConstructed to OEM-equivalent specifications\u003c\/li\u003e\n  \u003cli\u003eResistant to diesel exposure and routine wear\u003c\/li\u003e\n  \u003cli\u003eEngineered for repeatable fit on compatible tanks\u003c\/li\u003e\n  \u003cli\u003eSold as a direct replacement for listed part numbers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I confirm this is the right replacement part?\u003c\/h3\u003e\n\u003cp\u003eVerify the OEM part number on your current cap or vehicle parts list — 20770691 or 20770657 are the direct cross-references. Measure the fuel filler opening to confirm the 3-inch across-threads size and ensure your tank is labeled low-sulfur diesel or PNG for compatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMatch stamped or printed part numbers 20770691 \/ 20770657\u003c\/li\u003e\n  \u003cli\u003eConfirm 3\" across-threads filler opening dimension\u003c\/li\u003e\n  \u003cli\u003eCheck tank label for low-sulfur diesel or PNG designation\u003c\/li\u003e\n  \u003cli\u003eContact a technician if you’re unsure about tank venting configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This TINWID1919 fuel cap is aimed at fleet managers, mechanics, and owner-operators running compatible Volvo and Mack heavy-duty trucks (2010 and later) who need an OEM-style, non-locking replacement. It suits vehicles that rely on the truck’s venting system and require a durable across-threads 3-inch cap that matches part numbers 20770691 and 20770657 for easy service and inventory matching.\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: Is this fuel cap ventilated?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This TINWID1919 cap is non-vented and requires the truck’s fuel tank to have separate venting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Which part numbers does it replace?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It replaces OEM part numbers 20770691 and 20770657 for compatible Volvo and Mack tanks.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"TINWID1919","offers":[{"title":"Default Title","offer_id":67591426572473,"sku":"B0CFQLS9V3","price":69.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/tinwid1919-front-view-fuel-cap.jpg?v=1790550698","url":"https:\/\/redleafauto.ca\/products\/tinwid1919-3-fuel-cap-for-volvo-mack-trucks-non-locking-non-vented-oem-fit-replaces-20770691-20770657","provider":"Redleaf Auto","version":"1.0","type":"link"}