{"product_id":"dorman-m630687-brake-master-cylinder","title":"Dorman M630687 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Lexus and Toyota Vehicles\u003c\/h2\u003e\u003cp\u003eThe Dorman M630687 brake master cylinder is engineered to restore proper brake hydraulics in select Lexus and Toyota models. Designed with precision, this aluminum master cylinder offers durability and consistent performance for vehicles like the Lexus RX350 and Toyota Highlander.\u003c\/p\u003e\u003ch2\u003eKey Features of the Dorman M630687 Brake Master Cylinder\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConstructed from durable aluminum for long-lasting use\u003c\/li\u003e\n\u003cli\u003eMaster cylinder bore diameter of 0.875 inches for accurate hydraulic pressure\u003c\/li\u003e\n\u003cli\u003eEquipped with two outlets featuring M12 x 1.0 thread pitch for secure connections\u003c\/li\u003e\n\u003cli\u003eRearward outlet and secondary outlet both sized M12 x 1.0 for compatibility\u003c\/li\u003e\n\u003cli\u003eIncludes the master cylinder only; reservoir and sensor are not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis Dorman brake master cylinder (part number M630687) is designed specifically for brake hydraulics systems in Lexus and Toyota vehicles, including the Highlander, RX350, RX350L, RX450h, and Sienna models. The aluminum construction ensures resistance to corrosion and heat, maintaining reliable brake fluid pressure. With a bore diameter of 0.875 inches, it provides precise hydraulic control essential for safe braking. The two outlets, both with M12 x 1.0 thread pitch, allow for secure and leak-free connections to the brake lines. Note that this unit does not include a reservoir or sensor, so it is intended for replacement where those components remain functional.\u003c\/p\u003e\u003ch2\u003eCommon Brake Issues Addressed by This Master Cylinder\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSpongy or unresponsive brake pedal feel\u003c\/li\u003e\n\u003cli\u003eBrake fluid leaks around the master cylinder area\u003c\/li\u003e\n\u003cli\u003eReduced braking efficiency or inconsistent brake pressure\u003c\/li\u003e\n\u003cli\u003eBrake warning light activation due to hydraulic failure\u003c\/li\u003e\n\u003cli\u003eDifficulty maintaining proper brake fluid pressure in Lexus RX350 or Toyota Sienna\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure brake fluid reservoir and sensors are compatible and in good condition before installation\u003c\/li\u003e\n\u003cli\u003eBleed the brake system thoroughly after installation to remove air pockets\u003c\/li\u003e\n\u003cli\u003eVerify thread pitch (M12 x 1.0) matches brake line fittings for proper connection\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools to avoid damaging aluminum surfaces during installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty Information\u003c\/h2\u003e\u003cp\u003eDorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance for your Lexus or Toyota vehicle. While specific warranty details for part number M630687 may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Consult product documentation or your supplier for exact warranty terms.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52089076973749,"sku":"BKKX-M630687","price":136.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M630687_Fro.jpg?v=1775148254","url":"https:\/\/www.partcatalog.com\/products\/dorman-m630687-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}