{"product_id":"dorman-m631054-brake-master-cylinder","title":"Dorman M631054 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Buick LaCrosse and Chevrolet Malibu\u003c\/h2\u003e\u003cp\u003eThe Dorman M631054 brake master cylinder is engineered to restore proper brake hydraulics for select Buick and Chevrolet models. Designed with durable cast iron construction, this master cylinder ensures consistent braking performance for your LaCrosse or Malibu.\u003c\/p\u003e\u003ch2\u003eKey Features of Dorman M631054 Brake Master Cylinder\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConstructed from cast iron for strength and durability\u003c\/li\u003e\n\u003cli\u003eIncludes 2 mounting holes for secure installation\u003c\/li\u003e\n\u003cli\u003eMaster cylinder bore diameter measures 1 inch\u003c\/li\u003e\n\u003cli\u003eEquipped with 2 outlets featuring M14x1.5 rearward outlet thread size\u003c\/li\u003e\n\u003cli\u003eRemovable reservoir type for maintenance flexibility\u003c\/li\u003e\n\u003cli\u003eDoes not include brake booster, push rod, or mounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman M631054 brake master cylinder is designed specifically for brake hydraulics systems in Buick LaCrosse and Chevrolet Malibu vehicles. Its cast iron material provides reliable resistance to wear and corrosion, supporting long-term brake system integrity. The master cylinder features a 1-inch bore diameter and two outlets with a secondary outlet thread diameter of 14 mm and a thread pitch of 1.5, compatible with standard brake line fittings. The removable reservoir type allows for easier brake fluid inspection and servicing. Note that this part does not include a brake booster, push rod, mounting hardware, or bleeder hoses, so these components must be sourced separately if needed.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores proper hydraulic pressure in brake systems for Buick LaCrosse and Chevrolet Malibu\u003c\/li\u003e\n\u003cli\u003eReplaces worn or leaking master cylinders causing brake fluid loss\u003c\/li\u003e\n\u003cli\u003eEliminates spongy or unresponsive brake pedal feel\u003c\/li\u003e\n\u003cli\u003eResolves brake fluid contamination issues related to reservoir wear\u003c\/li\u003e\n\u003cli\u003eAddresses brake system failure symptoms due to internal cylinder wear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure compatibility with your specific Buick LaCrosse or Chevrolet Malibu model year before installation\u003c\/li\u003e\n\u003cli\u003eBleed the brake system thoroughly after installation to remove air pockets\u003c\/li\u003e\n\u003cli\u003eUse appropriate brake fluid as specified by the vehicle manufacturer\u003c\/li\u003e\n\u003cli\u003eCheck all brake line fittings for proper torque and sealing\u003c\/li\u003e\n\u003cli\u003eReplace any worn or damaged mounting hardware 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 M631054 brake master cylinder to meet or exceed OEM specifications for fit and function. The cast iron construction supports durability under normal operating conditions. While specific warranty details are not provided here, Dorman products typically come with a limited warranty covering defects in material and workmanship. Consult product documentation or the manufacturer for exact warranty terms.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52238166458549,"sku":"BKKX-M631054","price":157.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M631054_Fro.jpg?v=1775665010","url":"https:\/\/www.partcatalog.com\/products\/dorman-m631054-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}