{"product_id":"dorman-m71277-brake-master-cylinder","title":"Dorman M71277 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Buick, Jeep, Oldsmobile, and Pontiac\u003c\/h2\u003e\u003cp\u003eThe Dorman M71277 brake master cylinder is engineered to restore proper brake hydraulics in select Buick, Jeep, Oldsmobile, and Pontiac vehicles. Designed with durable cast iron and a built-in reservoir, this master cylinder ensures consistent brake fluid delivery for safe and effective braking performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaster cylinder bore diameter: 1 inch\u003c\/li\u003e\n\u003cli\u003eConstructed from durable cast iron material\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir for brake fluid\u003c\/li\u003e\n\u003cli\u003eTwo outlet ports with rearward outlet size 9\/16-18\u003c\/li\u003e\n\u003cli\u003eSecondary outlet thread diameter of 0.5 inches\u003c\/li\u003e\n\u003cli\u003ePackage contains the master cylinder only; mounting hardware not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDurable Construction and Precise Specifications\u003c\/h2\u003e\u003cp\u003eThe Dorman M71277 master cylinder features a 1-inch bore diameter made from cast iron, providing strength and resistance to wear. Its integrated reservoir simplifies installation and maintenance by holding the brake fluid securely. The unit includes two outlets, with a rearward outlet thread size of 9\/16-18 and a secondary outlet thread diameter of 0.5 inches, ensuring compatibility with the brake lines on your vehicle. This master cylinder is designed without a sensor and does not include mounting hardware, so be sure to prepare accordingly during installation.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis brake master cylinder is compatible with a range of classic and utility vehicles, including Buick models like the Cutlass, Cutlass Supreme, Delta 88, LeMans, Skylark, and Tempest. It also fits Jeep models such as the Cherokee, CJ5, CJ7, Wagoneer, and trucks like the J10 and J20. Additionally, it suits Oldsmobile and Pontiac vehicles including the Firebird, Grand Prix, and GTO. The Dorman M71277 is ideal for restoring brake hydraulics on these specific makes and models.\u003c\/p\u003e\u003ch2\u003eCommon Brake System Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrake pedal sinking or sponginess due to master cylinder wear\u003c\/li\u003e\n\u003cli\u003eBrake fluid leaks from a damaged or corroded master cylinder\u003c\/li\u003e\n\u003cli\u003eInconsistent brake pressure affecting stopping performance\u003c\/li\u003e\n\u003cli\u003eBrake warning light activation related to hydraulic failure\u003c\/li\u003e\n\u003cli\u003eReplacement of a faulty or worn-out master cylinder in classic Buick, Jeep, Oldsmobile, or Pontiac vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Dorman M71277 master cylinder, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Since mounting hardware is not included, retain or source the correct bolts and fittings for your specific vehicle. Verify outlet thread sizes to match existing brake lines, especially the rearward outlet size of 9\/16-18 and secondary outlet thread diameter of 0.5 inches. Proper torque specifications should be followed to avoid leaks or damage.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures the M71277 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The cast iron construction provides durability and long service life. While mounting hardware and sensors are not included, the product is backed by Dorman's quality control processes. Please refer to Dorman's warranty policy for specific coverage details.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43789377339573,"sku":"BKKX-M71277","price":62.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M71277_Fro.jpg?v=1774997521","url":"https:\/\/www.partcatalog.com\/products\/dorman-m71277-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}