{"product_id":"dorman-m630391-brake-master-cylinder","title":"Dorman M630391 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Ford E-Series Vans\u003c\/h2\u003e\u003cp\u003eThe Dorman M630391 Brake Master Cylinder is designed specifically for Ford E-150, E-150 Econoline, E-250, and E-350 Super Duty models. This master cylinder ensures consistent brake fluid pressure and reliable braking performance for your vehicle's hydraulic brake system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaster cylinder bore diameter: 1.313 inches for precise fluid control\u003c\/li\u003e\n\u003cli\u003eConstructed from durable aluminum material for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir and sensor for complete brake system integration\u003c\/li\u003e\n\u003cli\u003eEquipped with three outlets to support complex brake line configurations\u003c\/li\u003e\n\u003cli\u003eRearward outlet size: 9\/16-18; secondary outlet thread diameters: 7\/16-24 and 3\/8-24\u003c\/li\u003e\n\u003cli\u003ePackage contains the master cylinder unit; mounting hardware not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details and Specifications\u003c\/h2\u003e\u003cp\u003eThe Dorman M630391 brake master cylinder is engineered with a 1.313-inch bore diameter to maintain optimal hydraulic pressure within the brake system. Its aluminum construction offers enhanced durability and resistance to corrosion, which is critical for long-term brake system reliability. This unit comes complete with an integrated reservoir and sensor, allowing for seamless monitoring and fluid management. The master cylinder features three outlets, including a rearward outlet sized at 9\/16-18 and secondary outlets with thread diameters of 7\/16-24 and 3\/8-24, accommodating the specific brake line requirements of Ford E-Series vans.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis brake master cylinder is compatible with the following Ford models:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFord E-150\u003c\/li\u003e\n\u003cli\u003eFord E-150 Econoline\u003c\/li\u003e\n\u003cli\u003eFord E-250\u003c\/li\u003e\n\u003cli\u003eFord E-350 Super Duty\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt is designed to replace the original equipment part and restore proper brake hydraulics for these vehicles.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by This Master Cylinder\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrake pedal sinking or sponginess due to internal leaks\u003c\/li\u003e\n\u003cli\u003eBrake fluid leaks around the master cylinder area\u003c\/li\u003e\n\u003cli\u003eInconsistent brake pressure causing uneven braking\u003c\/li\u003e\n\u003cli\u003eWarning lights triggered by faulty brake fluid sensors\u003c\/li\u003e\n\u003cli\u003eReduced braking performance in Ford E-Series vans\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Dorman M630391 master cylinder requires proper brake system bleeding to remove air and ensure optimal performance. Note that mounting hardware is not included, so retain original fasteners or acquire appropriate replacements. Verify compatibility with your specific Ford E-Series model before installation. Sensor connections should be carefully reattached to maintain brake fluid level monitoring.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures this brake master cylinder to meet or exceed OEM specifications for fit, form, and function. The aluminum construction and integrated sensor contribute to reliable operation. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Consult product documentation for exact warranty terms.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43792260202677,"sku":"BKKX-M630391","price":124.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M630391_Fro.jpg?v=1774997671","url":"https:\/\/www.partcatalog.com\/products\/dorman-m630391-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}