{"product_id":"dorman-m390267-brake-master-cylinder","title":"Dorman M390267 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Buick, Cadillac, Oldsmobile, and Pontiac\u003c\/h2\u003e\u003cp\u003eThe Dorman M390267 Brake Master Cylinder is engineered to restore proper brake hydraulics in select Buick, Cadillac, Oldsmobile, and Pontiac models. Designed with precision, this master cylinder ensures consistent brake fluid pressure for safe and effective braking performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaster cylinder bore diameter: 1 inch for accurate hydraulic control\u003c\/li\u003e\n\u003cli\u003eConstructed from durable aluminum material for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir and sensor for integrated brake fluid management\u003c\/li\u003e\n\u003cli\u003eFeatures two outlets with M12 x 1.0 thread size for secure connections\u003c\/li\u003e\n\u003cli\u003eCompatible with multiple GM luxury and full-size models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman M390267 master cylinder is crafted from aluminum, providing a lightweight yet robust component that resists corrosion and wear. Its 1-inch bore diameter is designed to deliver precise hydraulic pressure, essential for maintaining brake system integrity. This unit includes a reservoir and sensor, allowing for seamless monitoring and fluid containment within the brake system. The two outlets, both with M12 x 1.0 thread pitch, accommodate rearward and secondary outlet connections, ensuring compatibility with the brake lines of Buick 88 and 98, Cadillac DeVille and Eldorado, Oldsmobile LSS and Regency, as well as Pontiac Bonneville and Grand Prix models.\u003c\/p\u003e\u003ch2\u003eApplications and Common Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores brake fluid pressure in vehicles experiencing spongy or unresponsive brakes\u003c\/li\u003e\n\u003cli\u003eReplaces leaking or damaged master cylinders causing brake fluid loss\u003c\/li\u003e\n\u003cli\u003eResolves sensor-related brake warning light issues due to integrated sensor inclusion\u003c\/li\u003e\n\u003cli\u003eAddresses brake system failure symptoms in Buick, Cadillac, Oldsmobile, and Pontiac models listed\u003c\/li\u003e\n\u003cli\u003eImproves overall brake pedal feel and responsiveness\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Dorman M390267 master cylinder requires proper brake fluid handling and bleeding procedures to avoid air in the brake lines. Ensure all connections use the specified M12 x 1.0 thread fittings for a secure fit. Since mounting hardware is not included, retain original fasteners or source compatible hardware. Verify sensor connections are properly seated to maintain brake system monitoring functions.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures this brake master cylinder to meet or exceed OEM specifications, using quality aluminum materials and precise machining. The inclusion of the reservoir and sensor supports system reliability. While specific warranty details are not provided here, Dorman products typically come with a limited warranty covering defects in materials and workmanship.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":51915816370357,"sku":"BKKX-M390267","price":99.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M390267_Fro.jpg?v=1774997563","url":"https:\/\/www.partcatalog.com\/products\/dorman-m390267-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}