{"product_id":"1965-68-ford-mustang-fuel-sending-unit","title":"Fuel Sending Unit | 3\/8\" or 5\/16\" Outlet | 1964-68 Ford Mustang","description":"\u003cp\u003eRestore accurate fuel-level readings on your 1964.5-1968 Ford Mustang with this direct-fit fuel sending unit. Designed to mount in the factory-style location inside the fuel tank, this sender is available with either a 5\/16 inch or 3\/8 inch fuel outlet and in stainless steel or zinc-plated steel construction, allowing you to select the configuration that best matches your Mustang’s fuel system and restoration goals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Choose the outlet size that matches the fuel line installed on the vehicle. A 5\/16 inch outlet is commonly used with original standard fuel systems found on many early Mustangs, including six-cylinder and small-block applications. A 3\/8 inch outlet is appropriate when the vehicle has a factory or upgraded 3\/8 inch fuel line, including certain higher-performance or modified fuel systems. Model year and engine size alone may not confirm the correct size, so inspect the original sender or measure the outside diameter of the existing fuel line before ordering.\u003c\/p\u003e\n\u003chr\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1964 1\/2 to 1968 Mustang fitment:\u003c\/strong\u003e Designed for early Ford Mustang fuel tank sending unit applications.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo outlet sizes available:\u003c\/strong\u003e Choose a 5\/16 inch or 3\/8 inch outlet to match the vehicle’s existing tank-to-pump fuel line.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5\/16 inch outlet option:\u003c\/strong\u003e Commonly used with original standard fuel systems on many six-cylinder, small-block, and stock carbureted Mustangs.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\/8 inch outlet option:\u003c\/strong\u003e Used with Mustangs equipped with a 3\/8 inch fuel line, including certain higher-volume, performance, or previously upgraded fuel systems.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo construction options:\u003c\/strong\u003e Available in corrosion-resistant stainless steel or economical zinc-plated steel.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurate gauge signal:\u003c\/strong\u003e Measures the amount of fuel in the tank and sends the corresponding signal to the dashboard fuel gauge.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect-fit in-tank installation:\u003c\/strong\u003e Mounts in the factory-style sending unit location inside the fuel tank.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel-system restoration part:\u003c\/strong\u003e Ideal for fuel tank replacement, inaccurate gauge diagnosis, fuel-line service, sender replacement, or a complete Mustang restoration.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect replacement use:\u003c\/strong\u003e Replaces a worn, corroded, inaccurate, leaking, damaged, or missing fuel sending unit.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003eThis fuel sending unit is an important part of the fuel-level monitoring system on a 1964.5-1968 Mustang. A worn, corroded, damaged, or failing sender can cause inaccurate fuel readings, erratic gauge movement, fuel leakage, or uncertainty about the amount of fuel remaining in the tank.\u003c\/p\u003e\n\u003cp\u003eBoth outlet sizes perform the same fuel-level sensing function, but the outlet diameter must match the vehicle’s fuel supply line. The 5\/16 inch version is generally the correct choice when retaining an original-style 5\/16 inch line. This configuration is commonly found on standard early Mustang fuel systems and is often used on six-cylinder, small-block, and otherwise stock carbureted applications.\u003c\/p\u003e\n\u003cp\u003eThe 3\/8 inch version should be selected when the Mustang has a matching 3\/8 inch tank-to-pump fuel line. This may include certain factory configurations as well as cars that have been upgraded for increased fuel volume, performance carburetion, an electric fuel pump, or another modified fuel-system arrangement. Installing a larger sender outlet does not increase fuel-system capacity when the rest of the line remains 5\/16 inch, so matching the existing line is normally preferable to using an adapter or reducer.\u003c\/p\u003e\n\u003cp\u003eThe stainless steel option provides improved resistance to corrosion and is a strong choice for long-term service, frequently driven vehicles, or restorations where durability is a priority. The zinc-plated steel option provides a more economical, factory-style replacement with a protective plated finish. Both versions are designed to restore proper fuel-gauge operation when installed in a compatible application.\u003c\/p\u003e\n\u003cp\u003eBefore ordering, inspect the existing sender or measure the outside diameter of the vehicle’s fuel line near the tank. Cars that have been modified over the years may no longer use the fuel-line size originally associated with their engine or production year.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eChoose the 5\/16 inch version for a Mustang retaining a matching original-style 5\/16 inch fuel line, or select the 3\/8 inch version for a vehicle equipped with a matching 3\/8 inch fuel system. Then choose stainless steel for increased corrosion resistance or zinc-plated steel for an economical factory-style replacement.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #e6e6e6;\"\u003e\n\u003cth style=\"border: 1px solid #cfcfcf; padding: 10px; text-align: left;\" colspan=\"2\"\u003eProduct Fitment \u0026amp; Specifications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f7f7f7;\"\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003eFuel Sending Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003e1964.5-1968 Ford Mustang\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f7f7f7;\"\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003e\u003cstrong\u003eAvailable Outlet Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003e5\/16 inch or 3\/8 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003e\u003cstrong\u003e5\/16 Inch Application\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003eFor vehicles equipped with a matching 5\/16 inch fuel line; commonly used with original standard fuel systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f7f7f7;\"\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003e\u003cstrong\u003e3\/8 Inch Application\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003eFor vehicles equipped with a matching 3\/8 inch fuel line, including certain factory, performance, or upgraded fuel systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003e\u003cstrong\u003eAvailable Materials\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003eStainless steel or zinc-plated steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f7f7f7;\"\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003e\u003cstrong\u003eStainless Steel Option\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003eProvides increased corrosion resistance and long-term durability\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003e\u003cstrong\u003eZinc-Plated Steel Option\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003eProvides an economical factory-style replacement with a protective plated finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f7f7f7;\"\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003e\u003cstrong\u003eInstallation Location\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003eFactory-style sending unit location inside the fuel tank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003eMeasures fuel level and sends the fuel-level signal to the dashboard gauge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f7f7f7;\"\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003e\u003cstrong\u003eReplacement Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003eDirect-fit in-tank replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003e\u003cstrong\u003eCommon Applications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003eFuel sender replacement, fuel gauge repair, fuel tank service, fuel-line work, or vehicle restoration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f7f7f7;\"\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003e\u003cstrong\u003eSelection Note\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #cfcfcf; padding: 10px;\"\u003eVerify the existing fuel-line diameter and select the matching sender outlet before ordering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"ACP","offers":[{"title":"Stainless Steel \/ 3\/8 inch","offer_id":53030966821153,"sku":"1139077021","price":44.99,"currency_code":"USD","in_stock":true},{"title":"Stainless Steel \/ 5\/16 inch","offer_id":53030966853921,"sku":"1139077011","price":44.99,"currency_code":"USD","in_stock":true},{"title":"Steel \/ 3\/8 inch","offer_id":53030966886689,"sku":"1139077020","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Steel \/ 5\/16 inch","offer_id":53030966919457,"sku":"1139077010","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/5105\/5137\/files\/1139077021-stainless-fuel-sending-unit-3-8-outlet-1965-68-ford-mustang-01.jpg?v=1777840882","url":"https:\/\/relicrides.com\/products\/1965-68-ford-mustang-fuel-sending-unit","provider":"Relic Rides","version":"1.0","type":"link"}