{"product_id":"dorman-m390400-brake-master-cylinder","title":"Dorman M390400 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Ford Explorer and Ranger\u003c\/h2\u003e\u003cp\u003eThe Dorman M390400 Brake Master Cylinder is engineered to restore proper brake hydraulics in select Ford vehicles. Designed specifically for Ford Explorer, Explorer Sport, Explorer Sport Trac, and Ranger models, this master cylinder ensures consistent brake fluid pressure and reliable stopping power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaster cylinder bore diameter: 1.063 inches for precise 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 three outlets with a secondary outlet thread diameter of 10 mm\u003c\/li\u003e\n\u003cli\u003eRearward outlet size: M18 x 1.5 with a thread pitch of 1.0 for secure connections\u003c\/li\u003e\n\u003cli\u003ePackage contains the master cylinder unit; mounting hardware not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details and Specifications\u003c\/h2\u003e\u003cp\u003eThe Dorman M390400 brake master cylinder is crafted from aluminum, providing a lightweight yet robust component that resists corrosion and wear. Its 1.063-inch bore diameter is calibrated to deliver consistent hydraulic pressure, essential for the braking systems in Ford Explorer and Ranger vehicles. The included reservoir and sensor facilitate accurate monitoring and fluid management, contributing to overall brake system reliability. With three outlets, including a secondary outlet with a 10 mm thread diameter and a rearward outlet sized M18 x 1.5, this master cylinder supports proper brake line connections and fluid distribution. The thread pitch of 1.0 ensures compatibility with OEM brake fittings.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis brake master cylinder is compatible with the following Ford models:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFord Explorer\u003c\/li\u003e\n\u003cli\u003eFord Explorer Sport\u003c\/li\u003e\n\u003cli\u003eFord Explorer Sport Trac\u003c\/li\u003e\n\u003cli\u003eFord Ranger\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt is designed to replace worn or failing master cylinders in these vehicles, restoring brake system performance and safety.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by This Master Cylinder\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSpongy or unresponsive brake pedal\u003c\/li\u003e\n\u003cli\u003eBrake fluid leaks from the master cylinder or reservoir\u003c\/li\u003e\n\u003cli\u003eBrake warning light activation due to sensor faults\u003c\/li\u003e\n\u003cli\u003eReduced hydraulic pressure causing poor braking performance\u003c\/li\u003e\n\u003cli\u003eContaminated or deteriorated brake fluid reservoir\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Dorman M390400 master cylinder requires proper brake system bleeding to remove air and ensure optimal hydraulic function. Note that mounting hardware is not included, so existing hardware should be inspected and replaced if necessary. Verify thread sizes and pitch compatibility with your vehicle’s brake lines before installation. Sensor connections should be carefully reattached to maintain brake system monitoring.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures this brake master cylinder to meet or exceed OEM specifications for fit, form, and function. The aluminum construction and integrated sensor contribute to long-term durability. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulics products to cover defects in materials and workmanship.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43792164126901,"sku":"BKKX-M390400","price":115.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M390400_Fro.jpg?v=1774997583","url":"https:\/\/www.partcatalog.com\/products\/dorman-m390400-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}