{"product_id":"dorman-m39649-brake-master-cylinder","title":"Dorman M39649 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Chevrolet, Dodge, and GMC Vehicles\u003c\/h2\u003e\u003cp\u003eThe Dorman M39649 brake master cylinder is engineered to restore proper brake hydraulics in select Chevrolet, Dodge, and GMC trucks and SUVs. Designed with a cast iron body and a 1.25-inch bore diameter, this master cylinder includes a reservoir and features dual outlets to ensure consistent brake fluid delivery.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaster cylinder bore diameter: 1.25 inches for precise hydraulic pressure\u003c\/li\u003e\n\u003cli\u003eDurable cast iron construction for long-lasting performance\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir for brake fluid storage\u003c\/li\u003e\n\u003cli\u003eTwo outlets with rearward outlet size 1\/2-20 and secondary outlet thread diameter 9\/16-18\u003c\/li\u003e\n\u003cli\u003eCompatible with Chevrolet Blazer, C1500, C1500 Suburban, C2500, C2500 Suburban, C3500, K1500, K1500 Suburban, K2500, K2500 Suburban, K3500, Ram 2500, and GMC Yukon\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details and Specifications\u003c\/h2\u003e\u003cp\u003eThe Dorman M39649 brake master cylinder is constructed from cast iron, providing the strength needed to withstand the demands of brake hydraulics in heavy-duty trucks and SUVs. Its 1.25-inch bore diameter is designed to deliver the correct hydraulic pressure for reliable braking performance. This master cylinder comes with an integrated reservoir, eliminating the need for a separate fluid container. It features two outlets: a rearward outlet sized at 1\/2-20 and a secondary outlet with a 9\/16-18 thread diameter, allowing for proper brake line connections. Note that mounting hardware is not included with this part.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eChevrolet Blazer and Suburban models including C1500, C2500, and C3500 series\u003c\/li\u003e\n\u003cli\u003eDodge Ram 2500 trucks\u003c\/li\u003e\n\u003cli\u003eGMC K1500, K2500, K3500, and Yukon models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Issues Addressed by This Master Cylinder\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrake pedal sinking or sponginess due to internal leaks\u003c\/li\u003e\n\u003cli\u003eBrake fluid leaks from a worn or damaged master cylinder\u003c\/li\u003e\n\u003cli\u003eReduced braking efficiency or uneven brake pressure\u003c\/li\u003e\n\u003cli\u003eBrake warning light activation related to master cylinder failure\u003c\/li\u003e\n\u003cli\u003eContaminated or deteriorated brake fluid reservoir\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure the brake system is properly bled after installation to remove air\u003c\/li\u003e\n\u003cli\u003eVerify compatibility with your specific Chevrolet, Dodge, or GMC model before purchase\u003c\/li\u003e\n\u003cli\u003eUse appropriate brake fluid as specified by the vehicle manufacturer\u003c\/li\u003e\n\u003cli\u003eInspect brake lines and fittings for wear or damage during installation\u003c\/li\u003e\n\u003cli\u003eMounting hardware is not included; reuse existing hardware or source separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures the M39649 brake master cylinder to meet or exceed OEM standards for fit and function. The cast iron construction and integrated reservoir contribute to reliable brake system performance. While mounting hardware is not included, the part is designed for direct replacement on compatible Chevrolet, Dodge, and GMC models. Warranty coverage details should be confirmed at the point of purchase or through Dorman's official channels.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43789347618997,"sku":"BKKX-M39649","price":86.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M39649_Fro_7a397687-5893-42d1-ae97-6607f8654626.jpg?v=1774997491","url":"https:\/\/www.partcatalog.com\/products\/dorman-m39649-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}