{"product_id":"dorman-m39658-brake-master-cylinder","title":"Dorman M39658 Brake Master Cylinder","description":"\u003ch2\u003eOverview of the Dorman Brake Master Cylinder M39658\u003c\/h2\u003e\u003cp\u003eThe Dorman Brake Master Cylinder M39658 is designed specifically for Toyota Pickup models, providing reliable brake hydraulics performance. This cast iron master cylinder includes a reservoir and features precise bore and outlet specifications to ensure proper fit and function.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Toyota Pickup vehicles\u003c\/li\u003e\n\u003cli\u003eMaster cylinder bore diameter: 0.938 inches\u003c\/li\u003e\n\u003cli\u003eConstructed from durable cast iron material\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir for brake fluid\u003c\/li\u003e\n\u003cli\u003eTwo outlets with rearward outlet size M10 x 1.0 and thread pitch 1.0\u003c\/li\u003e\n\u003cli\u003eSecondary outlet thread diameter: 10 mm\u003c\/li\u003e\n\u003cli\u003eMounting hardware not included\u003c\/li\u003e\n\u003cli\u003ePart number: M39658\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman M39658 brake master cylinder is engineered to meet the hydraulic braking needs of Toyota Pickup trucks. Its cast iron construction offers strength and durability under demanding conditions. The master cylinder features a 0.938-inch bore diameter, which is critical for maintaining proper hydraulic pressure within the brake system. This unit comes with an integrated reservoir to hold brake fluid, simplifying installation and maintenance. The two outlet ports, including a rearward outlet sized M10 x 1.0 with a 1.0 thread pitch, allow for secure connection to the brake lines. While mounting hardware is not included, the master cylinder is designed for straightforward replacement in compatible Toyota Pickup models.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores proper brake pedal feel and responsiveness\u003c\/li\u003e\n\u003cli\u003eEliminates brake fluid leaks from a worn or damaged master cylinder\u003c\/li\u003e\n\u003cli\u003eResolves inconsistent braking pressure or spongy brake pedal\u003c\/li\u003e\n\u003cli\u003eReplaces master cylinders with corroded or cracked cast iron bodies\u003c\/li\u003e\n\u003cli\u003eAddresses brake system failure due to internal seal wear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure compatibility with your Toyota Pickup model before installation\u003c\/li\u003e\n\u003cli\u003eBleed the brake system thoroughly after installation to remove air\u003c\/li\u003e\n\u003cli\u003eUse appropriate brake fluid as specified by the vehicle manufacturer\u003c\/li\u003e\n\u003cli\u003eCheck all connections for leaks after installation\u003c\/li\u003e\n\u003cli\u003eMounting hardware must be sourced separately as it is not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures the M39658 brake master cylinder to meet or exceed OEM specifications for fit, form, and function. The cast iron construction ensures long-lasting durability. While specific warranty details should be confirmed at the point of purchase, Dorman typically offers limited warranties covering defects in materials and workmanship.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43789347979445,"sku":"BKKX-M39658","price":144.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M39658_Fro_07b468c7-285c-4378-a821-81b7b5ea3ca6.jpg?v=1774997492","url":"https:\/\/www.partcatalog.com\/products\/dorman-m39658-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}