{"product_id":"dorman-m390134-brake-master-cylinder","title":"Dorman M390134 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Lexus GS300, SC300, SC400\u003c\/h2\u003e\u003cp\u003eThe Dorman M390134 brake master cylinder is engineered to restore proper brake hydraulics in select Lexus models. Designed with precision, this aluminum master cylinder includes a reservoir and sensor to ensure consistent brake performance for your GS300, SC300, or SC400.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaster cylinder bore diameter: 1.063 inches for accurate hydraulic pressure\u003c\/li\u003e\n\u003cli\u003eDurable aluminum construction for corrosion resistance and longevity\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir and sensor for integrated brake system monitoring\u003c\/li\u003e\n\u003cli\u003eTwo outlet ports with rearward outlet size M10 x 1.0 and thread pitch 1.0\u003c\/li\u003e\n\u003cli\u003eCompatible with Lexus GS300, SC300, and SC400 models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details and Specifications\u003c\/h2\u003e\u003cp\u003eThe Dorman M390134 brake master cylinder is crafted from aluminum, providing a lightweight yet durable component essential for brake hydraulics. It features a 1.063-inch bore diameter, which is critical for maintaining proper brake fluid pressure and pedal feel. This master cylinder comes with an integrated reservoir and sensor, allowing for seamless fluid level monitoring and brake system diagnostics. The unit includes two outlets, with a secondary outlet thread diameter of 10 mm and a rearward outlet size of M10 x 1.0, ensuring compatibility with the brake lines on Lexus GS300, SC300, and SC400 vehicles. Note that mounting hardware is not included with this part.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Resolution\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores brake fluid pressure in Lexus GS300, SC300, and SC400 brake systems\u003c\/li\u003e\n\u003cli\u003eReplaces master cylinders with worn or damaged bores causing brake pedal issues\u003c\/li\u003e\n\u003cli\u003eAddresses brake fluid leaks from the master cylinder reservoir or outlets\u003c\/li\u003e\n\u003cli\u003eResolves brake warning light activation due to faulty sensor or fluid level detection\u003c\/li\u003e\n\u003cli\u003eImproves brake system reliability and pedal response in affected Lexus models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Dorman M390134 brake master cylinder, ensure the brake system is properly bled to remove air and maintain hydraulic integrity. Verify that the reservoir is filled with the correct brake fluid type recommended for your Lexus GS300, SC300, or SC400. Since mounting hardware is not included, retain or replace existing hardware as needed. Confirm all outlet connections are secure and free of leaks before completing installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty Information\u003c\/h2\u003e\u003cp\u003eDorman manufactures the M390134 brake master cylinder to meet or exceed OEM specifications for fit, form, and function. The aluminum construction and integrated sensor contribute to reliable brake system performance. This part is backed by Dorman's standard warranty coverage, providing assurance of quality and durability for your Lexus GS300, SC300, or SC400 brake system repair.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43792105308341,"sku":"BKKX-M390134","price":205.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M390134_Fro.jpg?v=1774997550","url":"https:\/\/www.partcatalog.com\/products\/dorman-m390134-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}