{"product_id":"dorman-m630974-brake-master-cylinder","title":"Dorman M630974 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder Replacement\u003c\/h2\u003e\u003cp\u003eThe Dorman M630974 brake master cylinder is engineered to restore proper brake hydraulics performance for compatible vehicles. Designed with a durable cast iron construction, this master cylinder ensures consistent braking pressure and reliable operation for your vehicle's brake system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCast iron master cylinder material for durability\u003c\/li\u003e\n\u003cli\u003eIntegral reservoir included for fluid storage\u003c\/li\u003e\n\u003cli\u003eMaster cylinder bore diameter of 1.125 inches\u003c\/li\u003e\n\u003cli\u003eIncludes push rod and master cylinder cap\u003c\/li\u003e\n\u003cli\u003eTwo mounting holes for secure installation\u003c\/li\u003e\n\u003cli\u003eSingle outlet with rearward outlet size of 7\/16-24 inches\u003c\/li\u003e\n\u003cli\u003ePedal rod inner diameter of 9 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details and Specifications\u003c\/h2\u003e\u003cp\u003eThe Dorman M630974 brake master cylinder features a 1.125-inch bore diameter, which is critical for maintaining proper hydraulic pressure in the brake system. Constructed from cast iron, this master cylinder offers strength and resistance to wear. It comes with an integral reservoir to hold brake fluid, eliminating the need for a separate reservoir. The unit includes a push rod and master cylinder cap, but does not include mounting hardware, brake booster, bleeder hoses, sensors, or mounting brackets. The master cylinder mounts with two holes and has a single rearward outlet sized at 7\/16-24 inches, designed to connect seamlessly with your vehicle's brake lines.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis Dorman brake master cylinder is compatible with various vehicle makes and models requiring a 1.125-inch bore diameter master cylinder with an integral reservoir and single outlet configuration. It is commonly used in brake hydraulic systems where a cast iron master cylinder is specified. For exact fitment, verify compatibility with your vehicle's year, make, and model using the part number M630974.\u003c\/p\u003e\u003ch2\u003eCommon Brake System Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrake pedal feels spongy or sinks to the floor\u003c\/li\u003e\n\u003cli\u003eBrake fluid leaks from the master cylinder or reservoir\u003c\/li\u003e\n\u003cli\u003eReduced braking performance or inconsistent brake pressure\u003c\/li\u003e\n\u003cli\u003eBrake warning light illuminated due to hydraulic failure\u003c\/li\u003e\n\u003cli\u003eCorroded or damaged master cylinder body affecting brake function\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Dorman M630974 master cylinder, ensure the brake system is properly bled to remove air and restore hydraulic pressure. Use the two mounting holes to securely fasten the unit to the vehicle's firewall or mounting bracket. Since mounting hardware is not included, retain or source the appropriate bolts and fasteners. Verify that the push rod length and pedal rod inner diameter (9 mm) match your vehicle's specifications. Check all brake line connections, especially the 7\/16-24 inch rearward outlet, for proper fit and sealing.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\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 provides long-lasting durability under normal operating conditions. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Consult product documentation or the supplier for exact warranty terms related to part number M630974.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52089080742069,"sku":"BKKX-M630974","price":141.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M630974_Fro.jpg?v=1775148263","url":"https:\/\/www.partcatalog.com\/products\/dorman-m630974-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}