{"product_id":"dorman-m40000-brake-master-cylinder","title":"Dorman M40000 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Classic GM Vehicles\u003c\/h2\u003e\u003cp\u003eThe Dorman M40000 brake master cylinder is engineered to restore proper brake hydraulics in select Buick, Chevrolet, Jeep, Oldsmobile, and Pontiac models. Designed with a durable cast iron body 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 storage\u003c\/li\u003e\n\u003cli\u003eSingle outlet design with 7\/16-24 rearward outlet size\u003c\/li\u003e\n\u003cli\u003eMounting hardware not included\u003c\/li\u003e\n\u003cli\u003eCompatible with classic models such as Chevrolet Bel Air, Buick LeMans, Pontiac GTO, and Jeep Wagoneer\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDurable Construction and Precise Fitment\u003c\/h2\u003e\u003cp\u003eThe Dorman M40000 brake master cylinder features a cast iron construction that withstands the rigors of brake system pressure and heat. Its 1-inch bore diameter is designed to provide consistent hydraulic force, ensuring reliable brake pedal feel and stopping power. The integrated reservoir simplifies installation and maintenance by housing the brake fluid securely. This master cylinder is engineered specifically for rearward outlet brake systems with a 7\/16-24 outlet size, making it suitable for a range of classic GM and Jeep vehicles.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis brake master cylinder is compatible with a variety of classic American vehicles, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBuick models such as LeMans and Skylark\u003c\/li\u003e\n\u003cli\u003eChevrolet models including Bel Air, Caprice, Impala, and El Camino\u003c\/li\u003e\n\u003cli\u003eJeep Wagoneer\u003c\/li\u003e\n\u003cli\u003eOldsmobile Cutlass, Delta 88, and 98\u003c\/li\u003e\n\u003cli\u003ePontiac GTO, Grand Prix, Catalina, and Tempest\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse the Dorman M40000 to replace worn or leaking master cylinders in these vehicles to restore proper brake hydraulics.\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 reservoir leaks or cracks\u003c\/li\u003e\n\u003cli\u003eInconsistent brake pressure causing uneven braking\u003c\/li\u003e\n\u003cli\u003eBrake system failure from worn or damaged master cylinder bore\u003c\/li\u003e\n\u003cli\u003eHydraulic fluid contamination or loss\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Dorman M40000 master cylinder requires careful attention to brake line connections and bleeding procedures. Note that mounting hardware is not included, so original or aftermarket hardware will be needed. Ensure the brake fluid reservoir is filled with the correct fluid type and bleed the brake system thoroughly to remove air pockets. 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 this brake master cylinder to meet or exceed OEM specifications for fit, form, and function. The cast iron construction and integrated reservoir are tested for durability and performance. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulics products to cover defects in materials and workmanship.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43789375897781,"sku":"BKKX-M40000","price":66.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M40000_Fro.jpg?v=1774997516","url":"https:\/\/www.partcatalog.com\/products\/dorman-m40000-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}