{"product_id":"dorman-m661-brake-master-cylinder","title":"Dorman M661 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder Replacement for Your Vehicle\u003c\/h2\u003e\u003cp\u003eThe Dorman M661 brake master cylinder is engineered to restore proper brake hydraulics performance in compatible vehicles. Designed with a durable cast iron construction and a 1.5-inch bore diameter, this master cylinder ensures consistent brake fluid pressure for safe stopping power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCast iron master cylinder material for durability\u003c\/li\u003e\n\u003cli\u003e1.5-inch bore diameter for precise hydraulic control\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir for brake fluid storage\u003c\/li\u003e\n\u003cli\u003eTwo outlets with rearward outlet size of (2) 1\/2-20\u003c\/li\u003e\n\u003cli\u003ePackage contains the master cylinder unit only\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details and Specifications\u003c\/h2\u003e\u003cp\u003eThe Dorman M661 brake master cylinder features a cast iron body that withstands the rigors of brake system pressure and heat. Its 1.5-inch bore diameter is designed to provide the correct hydraulic force needed for effective braking. This unit includes a reservoir to hold brake fluid, ensuring a steady supply to the brake lines. The master cylinder has two outlets, each with a rearward outlet size of 1\/2-20, compatible with standard brake line fittings. Note that this part does not include mounting hardware or sensors.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Common Applications\u003c\/h2\u003e\u003cp\u003eThis brake master cylinder is suitable for replacement in various makes and models requiring a 1.5-inch bore diameter cast iron master cylinder with a reservoir included. It is commonly used in vehicles where the original equipment matches these specifications. The Dorman M661 is often sought for models such as Ford F-150, Chevrolet Silverado, and Dodge Ram trucks, where brake hydraulics require reliable master cylinder performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eRestores brake fluid pressure in vehicles with worn or leaking master cylinders\u003c\/li\u003e\n\u003cli\u003eAddresses spongy or unresponsive brake pedal issues\u003c\/li\u003e\n\u003cli\u003eReplaces master cylinders with damaged or corroded cast iron bodies\u003c\/li\u003e\n\u003cli\u003eSolves brake fluid reservoir leaks or contamination problems\u003c\/li\u003e\n\u003cli\u003eImproves overall brake system reliability and safety\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Dorman M661 brake master cylinder, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Verify that the reservoir is filled with the correct brake fluid type recommended by the vehicle manufacturer. Since mounting hardware is not included, retain or source the appropriate fasteners for secure installation. Inspect brake lines and fittings for compatibility with the 1\/2-20 rearward outlet size.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty Information\u003c\/h2\u003e\u003cp\u003eDorman manufactures the M661 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction and included reservoir are designed for long-term durability. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship to provide confidence in product reliability.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":51915814142133,"sku":"BKKX-M661","price":102.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M661_Fro.jpg?v=1774997446","url":"https:\/\/www.partcatalog.com\/products\/dorman-m661-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}