{"product_id":"dorman-m630989-brake-master-cylinder","title":"Dorman M630989 Brake Master Cylinder","description":"\u003ch2\u003eOverview of the Dorman Brake Master Cylinder for Mazda RX-7\u003c\/h2\u003e\u003cp\u003eThe Dorman M630989 brake master cylinder is designed specifically for Mazda RX-7 models, providing reliable brake hydraulics performance. Engineered with a cast zinc body and a 0.8125-inch bore diameter, this master cylinder ensures consistent braking pressure and durability.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Mazda RX-7 vehicles\u003c\/li\u003e\n\u003cli\u003eMaster cylinder bore diameter: 0.8125 inches\u003c\/li\u003e\n\u003cli\u003eConstructed from durable cast zinc material\u003c\/li\u003e\n\u003cli\u003eIncludes 3 outlets with M10 x 1.25 thread size\u003c\/li\u003e\n\u003cli\u003eFeatures a removable reservoir type\u003c\/li\u003e\n\u003cli\u003eMounting hole quantity: 2\u003c\/li\u003e\n\u003cli\u003eDoes not include mounting hardware, brake booster, or reservoir\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman M630989 brake master cylinder is a direct replacement part designed to restore proper brake hydraulic function in Mazda RX-7 vehicles. Its cast zinc construction offers corrosion resistance and strength, while the 0.8125-inch bore diameter is engineered to match OEM specifications for optimal brake fluid pressure. This master cylinder features three outlets, including a rearward outlet and two secondary outlets, all with M10 x 1.25 thread diameters, allowing for secure brake line connections. The removable reservoir type facilitates maintenance and fluid inspection. Note that this part does not include mounting hardware, brake booster, push rod, or bleeder hoses, so these components must be sourced separately if needed.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores brake hydraulic pressure in Mazda RX-7 brake systems\u003c\/li\u003e\n\u003cli\u003eReplaces worn or leaking master cylinders causing brake fluid loss\u003c\/li\u003e\n\u003cli\u003eSolves spongy or unresponsive brake pedal feel\u003c\/li\u003e\n\u003cli\u003eAddresses brake fluid contamination or internal seal failure\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 M630989 brake master cylinder on a Mazda RX-7, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Since mounting hardware and other components are not included, verify compatibility and condition of existing parts before installation. Use appropriate tools to avoid damage to the M10 x 1.25 threaded outlets. Follow manufacturer torque specifications for mounting bolts and brake line fittings to ensure a secure and leak-free installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures the M630989 brake master cylinder to meet or exceed OEM standards for fit, form, and function. The cast zinc material provides durability and corrosion resistance for long service life. This product is backed by Dorman's limited warranty, which covers defects in material and workmanship under normal use. For specific warranty details, refer to Dorman's official documentation.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43792434626741,"sku":"BKKX-M630989","price":95.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M630989_Fro.jpg?v=1774997794","url":"https:\/\/www.partcatalog.com\/products\/dorman-m630989-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}