{"product_id":"dorman-m39746-brake-master-cylinder","title":"Dorman M39746 Brake Master Cylinder","description":"\u003ch2\u003eOverview of Dorman Brake Master Cylinder for Mazda RX-7\u003c\/h2\u003e\u003cp\u003eThe Dorman M39746 brake master cylinder is designed specifically for Mazda RX-7 models, providing reliable brake hydraulics performance. This cast iron master cylinder includes a reservoir and features a 0.875-inch bore diameter to ensure consistent braking pressure.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Mazda RX-7 brake hydraulic systems\u003c\/li\u003e\n\u003cli\u003eMaster cylinder bore diameter: 0.875 inches\u003c\/li\u003e\n\u003cli\u003eDurable cast iron construction\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir for fluid storage\u003c\/li\u003e\n\u003cli\u003eThree outlet ports with rearward outlet size M10 x 1.0\u003c\/li\u003e\n\u003cli\u003eSecondary outlet thread diameter: 10 mm with 1.0 thread pitch\u003c\/li\u003e\n\u003cli\u003ePart number M39746 for precise identification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman M39746 brake master cylinder is engineered to meet the specifications required by Mazda RX-7 vehicles. Constructed from cast iron, this master cylinder offers durability and resistance to wear under typical braking conditions. The 0.875-inch bore diameter is calibrated to provide the correct hydraulic pressure for the RX-7’s braking system. It includes a reservoir to hold brake fluid, ensuring consistent fluid delivery during operation. The unit features three outlets, including a rearward outlet sized M10 x 1.0, and a secondary outlet with a 10 mm thread diameter and 1.0 thread pitch, allowing for proper connection to the brake lines. This part does not include mounting hardware or sensors, so those components must be sourced separately if needed.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for worn or leaking brake master cylinders on Mazda RX-7\u003c\/li\u003e\n\u003cli\u003eRestores proper hydraulic pressure for effective braking response\u003c\/li\u003e\n\u003cli\u003eResolves brake fluid reservoir leaks or damage\u003c\/li\u003e\n\u003cli\u003eAddresses inconsistent brake pedal feel due to master cylinder failure\u003c\/li\u003e\n\u003cli\u003eFixes brake fluid contamination or internal seal wear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Dorman M39746 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 is not included, retain or replace bolts and fittings as necessary. Verify thread sizes (M10 x 1.0) for outlet connections to ensure compatibility with existing brake lines. Inspect the brake fluid reservoir for cracks or damage before installation. Professional installation is recommended to maintain safety and performance standards.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures the M39746 brake master cylinder to meet or exceed OEM specifications for Mazda RX-7 brake hydraulics. The cast iron construction provides long-lasting durability under normal operating conditions. While mounting hardware and sensors are not included, the master cylinder itself is backed by Dorman’s quality control processes. Please refer to Dorman’s official warranty policy for coverage details.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43789349093557,"sku":"BKKX-M39746","price":79.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M39746_Fro.jpg?v=1774997497","url":"https:\/\/www.partcatalog.com\/products\/dorman-m39746-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}