{"product_id":"raybestos-mc391079-brake-master-cylinder","title":"Raybestos MC391079 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Buick and Cadillac Models\u003c\/h2\u003e\u003cp\u003eThe Raybestos Element3; New Brake Master Cylinder MC391079 is engineered to restore precise brake hydraulics for select Buick and Cadillac vehicles. Designed specifically for the DTS and Lucerne models, this master cylinder ensures consistent brake fluid pressure and reliable stopping power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConstructed from durable aluminum for long-lasting performance\u003c\/li\u003e\n\u003cli\u003eFeatures a 1.000-inch bore size for optimal hydraulic function\u003c\/li\u003e\n\u003cli\u003eIncludes two mounting holes with a diameter of 0.421 inches for secure installation\u003c\/li\u003e\n\u003cli\u003eEquipped with M13x1.5 primary and secondary port threads for compatibility with OEM brake lines\u003c\/li\u003e\n\u003cli\u003ePart number MC391079 ensures exact fitment for Buick DTS and Cadillac Lucerne\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Raybestos Element3; New Product Line\u003c\/h2\u003e\u003cp\u003eThe Element3; New line from Raybestos focuses on delivering high-quality brake hydraulics components that meet or exceed OEM specifications. This product line emphasizes precision engineering and material quality, such as the aluminum construction found in the MC391079 master cylinder, to provide reliable brake system performance for luxury vehicles like Buick and Cadillac.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis brake master cylinder is crafted from aluminum, offering a balance of strength and corrosion resistance essential for brake hydraulics. The 1.000-inch bore size is designed to maintain proper hydraulic pressure, ensuring responsive brake pedal feel. With two mounting holes sized at 0.421 inches in diameter, installation aligns with factory specifications. Both primary and secondary ports feature M13x1.5 threading, compatible with standard brake line fittings on the Buick DTS and Cadillac Lucerne models. The MC391079 part number guarantees a precise replacement part for these vehicles.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Resolution\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores brake fluid pressure in vehicles experiencing soft or spongy brake pedal feel\u003c\/li\u003e\n\u003cli\u003eReplaces worn or leaking master cylinders causing brake fluid loss\u003c\/li\u003e\n\u003cli\u003eAddresses brake system failure due to internal seal wear or corrosion\u003c\/li\u003e\n\u003cli\u003eImproves brake responsiveness in Buick DTS and Cadillac Lucerne models\u003c\/li\u003e\n\u003cli\u003eEliminates brake pedal sinking or inconsistent braking performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eEnsure the brake system is properly bled after installation to remove air and maintain hydraulic integrity. Verify that mounting holes align correctly with the vehicle’s firewall or mounting bracket. Use compatible brake fluid and inspect all brake lines for wear or damage during replacement. Tighten port fittings to manufacturer torque specifications to prevent leaks.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eRaybestos Element3; New brake master cylinders are manufactured to meet strict quality standards, ensuring durability and reliable performance. This part is backed by Raybestos’ quality assurance processes, providing confidence in fitment and function for Buick DTS and Cadillac Lucerne vehicles. Warranty details are available through Raybestos and should be confirmed at the time of purchase.\u003c\/p\u003e","brand":"Raybestos","offers":[{"title":"Default Title","offer_id":44427922145461,"sku":"BDBL-MC391079","price":107.23,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RS_MC391079_Fro_27eae5a2-5ca1-44cd-8d28-3d42287fd8a9.jpg?v=1775018928","url":"https:\/\/www.partcatalog.com\/products\/raybestos-mc391079-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}