{"product_id":"dorman-m80903-brake-master-cylinder","title":"Dorman M80903 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Ford, Lincoln, and Mercury Vehicles\u003c\/h2\u003e\u003cp\u003eThe Dorman M80903 brake master cylinder is engineered to restore proper brake hydraulics in select Ford, Lincoln, and Mercury models. Designed with durable cast iron and a built-in reservoir, this master cylinder ensures consistent brake fluid delivery for safe stopping performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaster cylinder bore diameter: 1 inch for precise hydraulic pressure\u003c\/li\u003e\n\u003cli\u003eConstructed from cast iron for long-lasting durability\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir for brake fluid containment\u003c\/li\u003e\n\u003cli\u003eTwo outlets with rearward outlet size of 9\/16-18 and secondary outlet thread diameter of 0.5 inches\u003c\/li\u003e\n\u003cli\u003eCompatible with Ford Colony Park, Lincoln Continental, Mercury Cougar, Grand Marquis, LTD, Marquis, Montego, and Thunderbird\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDurable Cast Iron Construction and Precise Hydraulic Design\u003c\/h2\u003e\u003cp\u003eThe Dorman M80903 brake master cylinder features a robust cast iron body that withstands the rigors of daily driving and brake system pressure. Its 1-inch bore diameter is calibrated to provide accurate hydraulic force to the brake calipers or wheel cylinders. The integrated reservoir simplifies brake fluid management, while the two outlet ports with specific thread sizes ensure proper connection to the brake lines. This master cylinder is designed specifically for rearward outlet configurations with a 9\/16-18 thread size, making it a direct replacement for compatible Ford, Lincoln, and Mercury vehicles.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Common Applications\u003c\/h2\u003e\u003cp\u003eThis brake master cylinder is compatible with a range of Ford, Lincoln, and Mercury models, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFord Colony Park\u003c\/li\u003e\n\u003cli\u003eLincoln Continental\u003c\/li\u003e\n\u003cli\u003eMercury Cougar\u003c\/li\u003e\n\u003cli\u003eGrand Marquis\u003c\/li\u003e\n\u003cli\u003eLTD\u003c\/li\u003e\n\u003cli\u003eMarquis\u003c\/li\u003e\n\u003cli\u003eMontego\u003c\/li\u003e\n\u003cli\u003eThunderbird\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt is designed to address issues such as:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSpongy or unresponsive brake pedal\u003c\/li\u003e\n\u003cli\u003eBrake fluid leaks from the master cylinder\u003c\/li\u003e\n\u003cli\u003eBrake warning light activation due to hydraulic failure\u003c\/li\u003e\n\u003cli\u003eReduced braking efficiency or uneven brake pressure\u003c\/li\u003e\n\u003cli\u003eContaminated or damaged brake fluid reservoir\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Dorman M80903 brake master cylinder, ensure the brake system is properly bled to remove air pockets and maintain hydraulic integrity. This part does not include mounting hardware, so retain original fasteners or acquire appropriate replacements. Verify the rearward outlet thread size (9\/16-18) matches your vehicle’s brake line fittings for a secure connection. Proper torque specifications should be followed to avoid leaks or damage.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty Information\u003c\/h2\u003e\u003cp\u003eDorman manufactures this brake master cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction and integrated reservoir are tested for durability and performance under typical operating conditions. While specific warranty details are not provided here, Dorman products generally come with a limited warranty against defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52089072582837,"sku":"BKKX-M80903","price":52.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M80903_Fro.jpg?v=1775148231","url":"https:\/\/www.partcatalog.com\/products\/dorman-m80903-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}