{"product_id":"moeller-manual-vent-gas-cap-with-gauge-vented-fuel-cap-for-topside-marine-tanks-pre-2011-international","title":"Moeller Manual Vent Gas Cap with Gauge, 12.25 Inch, Part 621501-10-1","description":"\u003cp\u003eThe Moeller Manual Vent Gas Cap with Gauge (part number 621501-10-1) is a replacement fill cap designed for manual-vent fuel tank systems, built for use internationally and in boats built before 2011. The cap measures 12.25 inches and incorporates a built-in fuel gauge, letting you check remaining fuel level directly at the fill point without removing the cap or checking a separate gauge elsewhere on the tank. As a manual vent design, the cap relies on the boat's separate vent line configuration rather than an integrated pressure-relief vent, making it suited to older tank setups that use this style of fill and vent arrangement.\u003c\/p\u003e\u003cp\u003eThis gas cap is intended as a direct fit replacement for the fill opening on compatible Moeller-style fuel tanks, restoring a secure, gauge-equipped closure to the fuel system. Because it is rated for international use as well as pre-2011 boats, it suits both older domestic vessels and boats operating under non-US emissions requirements.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Moeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 621501-10-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Manual Vent Gas Cap with Gauge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 12.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVent Type:\u003c\/strong\u003e Manual vent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGauge:\u003c\/strong\u003e Integrated fuel level gauge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282390686\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Gas Caps and Deck Fills\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eFor use internationally and in boats built before 2011\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Moeller 621501-10-1 gas cap used for?\u003c\/strong\u003e The Moeller 621501-10-1 is a manual vent gas cap with a built-in fuel gauge, used to close and monitor the fuel fill opening on compatible manual-vent fuel tank systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this cap fit boats built after 2011?\u003c\/strong\u003e The Moeller 621501-10-1 is designated for use internationally and in boats built before 2011; fitment on boats built in 2011 or later is not specified.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the Moeller manual vent gas cap?\u003c\/strong\u003e The cap measures 12.25 inches across, corresponding to the fill opening it is designed to close on compatible tanks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the cap include a fuel gauge?\u003c\/strong\u003e Yes, part number 621501-10-1 is a cap with an integrated gauge, so fuel level can be checked directly at the fill point.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a manual vent or a pressure-relief vent cap?\u003c\/strong\u003e This is a manual vent design, meaning it relies on a separate vent line in the boat's fuel system rather than a built-in pressure-relief vent.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Moeller 621501-10-1 gas cap weigh?\u003c\/strong\u003e It weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Moeller 621501-10-1 suited to international use?\u003c\/strong\u003e Yes, this cap is designated for use internationally in addition to boats built before 2011.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included with the 621501-10-1 gas cap?\u003c\/strong\u003e The product is the manual vent gas cap with gauge itself, part number 621501-10-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if this cap will fit my boat's fill opening?\u003c\/strong\u003e Confirm your existing fuel fill uses a manual vent tank system and a 12.25 inch opening, matching the dimensions of the Moeller 621501-10-1 cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat category of part is the 621501-10-1?\u003c\/strong\u003e It is classified as a gas cap and deck fill component for marine fuel tank systems.\u003c\/p\u003e","brand":"Moeller Marine","offers":[{"title":"Default Title","offer_id":48991101780187,"sku":"MOE-621501-10-1","price":23.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/MOE-621501-10_lg__39235.1558117374.500.750.jpg?v=1785329130","url":"https:\/\/www.goodvibesmarina.com\/products\/moeller-manual-vent-gas-cap-with-gauge-vented-fuel-cap-for-topside-marine-tanks-pre-2011-international","provider":"Good Vibes Marina","version":"1.0","type":"link"}