{"product_id":"dorman-m630785-brake-master-cylinder","title":"Dorman M630785 Brake Master Cylinder","description":"\u003ch2\u003eBrake Master Cylinder for OE-Style Replacement\u003c\/h2\u003e\u003cp\u003eThis Dorman brake master cylinder is built for specific vehicle years, makes, and models where a direct hydraulic brake replacement is needed. The cast iron body, 1.25-inch bore, and included reservoir support consistent brake pedal response and fluid delivery in the master cylinder assembly.\u003c\/p\u003e\u003cp\u003ePart number M630785 is a practical choice for drivers servicing a worn or leaking master cylinder on compatible applications such as Honda Civic and similar fitments listed for this part. It is engineered to match the original design, function, and performance of the factory unit.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDorman M630785 brake master cylinder for hydraulic brake repair\u003c\/li\u003e\n\u003cli\u003e1.25-inch bore diameter for OE-style brake system operation\u003c\/li\u003e\n\u003cli\u003eCast iron master cylinder construction\u003c\/li\u003e\n\u003cli\u003eReservoir included for a complete master cylinder assembly\u003c\/li\u003e\n\u003cli\u003eTwo outlet ports with 1\/2-20 UNF thread size\u003c\/li\u003e\n\u003cli\u003eNew, high-quality materials used in construction\u003c\/li\u003e\n\u003cli\u003eFits applications cross-referenced to Centric Parts 130.83001 and Raybestos Brakes MC681\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eDorman M630785 is a brake master cylinder designed to replace the original hydraulic unit on specific vehicles. It uses a 1.25-inch bore and cast iron construction to mirror the factory-style layout, while the included reservoir simplifies assembly replacement. This part is intended for brake system service where the original master cylinder has internal wear, leakage, or inconsistent pedal feel. For buyers searching for a brake master cylinder for Honda Civic applications, M630785 provides a direct replacement option for the listed fitment.\u003c\/p\u003e\u003cp\u003eThis part cross-references Centric Parts 130.83001 and Raybestos Brakes MC681 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Fix\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrake fluid leakage from the master cylinder body or seals\u003c\/li\u003e\n\u003cli\u003eSoft, sinking, or inconsistent brake pedal feel\u003c\/li\u003e\n\u003cli\u003eLoss of hydraulic pressure in the brake system\u003c\/li\u003e\n\u003cli\u003eBrake warning symptoms caused by master cylinder wear\u003c\/li\u003e\n\u003cli\u003eReduced braking response from an aging OE master cylinder\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eReplace the master cylinder as a complete hydraulic component and bleed the brake system thoroughly after installation. Verify outlet thread sizes, reservoir orientation, and vehicle-specific brake line routing before assembly. Because mounting hardware is not included, reuse or source the required hardware separately if needed. Confirm fitment for the exact vehicle application before purchase, including Honda Civic brake master cylinder configurations where applicable.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eThis Dorman replacement is precision-engineered to match the original master cylinder’s design, function, and performance on the specified applications. It is manufactured from new, high-quality materials to support durable brake system service.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52431298560181,"sku":"BKKX-M630785","price":124.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M630785_Fro.jpg?v=1777853405","url":"https:\/\/www.partcatalog.com\/products\/dorman-m630785-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}