{"product_id":"dorman-m390363-brake-master-cylinder","title":"Dorman M390363 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Chevrolet and GMC Vans\u003c\/h2\u003e\u003cp\u003eThe Dorman M390363 Brake Master Cylinder is designed to restore proper brake function in Chevrolet Express 1500, Express 2500, GMC Savana 1500, and Savana 2500 models. Engineered with durable aluminum and featuring a 1.125-inch bore diameter, this master cylinder includes a reservoir to ensure consistent hydraulic pressure for safe braking performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaster cylinder bore diameter: 1.125 inches for precise hydraulic control\u003c\/li\u003e\n\u003cli\u003eConstructed from aluminum for corrosion resistance and durability\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir for fluid storage and management\u003c\/li\u003e\n\u003cli\u003eTwo outlet ports with rearward outlet size 1\/2-20 and secondary outlet thread diameter 9\/16-18\u003c\/li\u003e\n\u003cli\u003eCompatible with Chevrolet Express 1500\/2500 and GMC Savana 1500\/2500\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details and Specifications\u003c\/h2\u003e\u003cp\u003eThis Dorman brake master cylinder (part number M390363) is manufactured from aluminum, providing a lightweight yet robust component that resists rust and wear. The 1.125-inch bore diameter is designed to deliver consistent hydraulic pressure to the brake system. The included reservoir allows for proper brake fluid containment and circulation. With two outlets, including a rearward outlet sized 1\/2-20 and a secondary outlet with a 9\/16-18 thread diameter, this master cylinder supports the brake hydraulics system requirements of the specified Chevrolet and GMC van models.\u003c\/p\u003e\u003ch2\u003eApplications and Common Repair Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores brake pressure loss in Chevrolet Express 1500 and 2500 vans\u003c\/li\u003e\n\u003cli\u003eReplaces worn or leaking master cylinders in GMC Savana 1500 and 2500\u003c\/li\u003e\n\u003cli\u003eAddresses brake fluid leaks or reservoir damage\u003c\/li\u003e\n\u003cli\u003eSolves issues with inconsistent brake pedal feel or sponginess\u003c\/li\u003e\n\u003cli\u003eSupports brake system rebuilds requiring a new master cylinder\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Dorman M390363 master cylinder requires proper brake system bleeding to remove air and ensure optimal hydraulic function. Note that mounting hardware is not included, so existing hardware should be inspected and replaced if necessary. Verify compatibility with Chevrolet Express and GMC Savana models before installation. Use appropriate tools to avoid damage to outlet threads and reservoir connections.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty Information\u003c\/h2\u003e\u003cp\u003eDorman manufactures this brake master cylinder to meet or exceed OEM specifications for fit and function. The aluminum construction offers corrosion resistance for extended service life. While mounting hardware is not included, the product undergoes quality checks to ensure reliability. Warranty details can be obtained from the product documentation or manufacturer directly.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43792156393653,"sku":"BKKX-M390363","price":122.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M390363_Fro.jpg?v=1774997576","url":"https:\/\/www.partcatalog.com\/products\/dorman-m390363-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}