{"product_id":"dorman-m390004-brake-master-cylinder","title":"Dorman M390004 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Nissan NX and Sentra\u003c\/h2\u003e\u003cp\u003eThe Dorman M390004 brake master cylinder is engineered to restore proper brake hydraulics in Nissan NX and Sentra models. Designed with precision, this aluminum master cylinder includes a reservoir and sensor to ensure consistent brake performance.\u003c\/p\u003e\u003ch2\u003eKey Features of the Dorman M390004 Brake Master Cylinder\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMaster cylinder bore diameter: 0.813 inches for accurate hydraulic pressure\u003c\/li\u003e\n\u003cli\u003eConstructed from durable aluminum material for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir for fluid storage and sensor for brake system monitoring\u003c\/li\u003e\n\u003cli\u003eFour outlets with a secondary outlet thread diameter of 10 mm\u003c\/li\u003e\n\u003cli\u003eRearward outlet size: M10 x 1.0 with a thread pitch of 1.0\u003c\/li\u003e\n\u003cli\u003ePackage contains the master cylinder unit; mounting hardware not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description and Specifications\u003c\/h2\u003e\u003cp\u003eThis Dorman brake master cylinder (part number M390004) is specifically designed for Nissan NX and Sentra vehicles, providing a precise fit and reliable brake hydraulics. The aluminum construction offers strength and resistance to corrosion, extending the service life of the component. The included reservoir allows for proper brake fluid containment, while the integrated sensor supports brake system diagnostics and safety features. With four outlets and a secondary outlet thread diameter of 10 mm, this master cylinder supports efficient brake fluid distribution. The rearward outlet size of M10 x 1.0 and thread pitch of 1.0 ensure compatibility with OEM brake lines.\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 from the master cylinder or reservoir\u003c\/li\u003e\n\u003cli\u003eBrake warning light activation due to sensor faults\u003c\/li\u003e\n\u003cli\u003eUneven brake pressure causing poor stopping performance\u003c\/li\u003e\n\u003cli\u003eBrake pedal sinking or failure to maintain pressure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure brake system is properly bled after installation to remove air\u003c\/li\u003e\n\u003cli\u003eVerify compatibility with Nissan NX and Sentra models before installation\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools for M10 x 1.0 thread fittings to avoid damage\u003c\/li\u003e\n\u003cli\u003eCheck sensor connections for secure fit and proper function\u003c\/li\u003e\n\u003cli\u003eMounting hardware is not included; reuse existing hardware or acquire separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty Information\u003c\/h2\u003e\u003cp\u003eDorman manufactures this brake master cylinder to meet or exceed OEM specifications for Nissan NX and Sentra vehicles. The part number M390004 undergoes rigorous quality control to ensure durability and performance. While mounting hardware is not included, the product is backed by Dorman's standard warranty coverage, providing confidence in its reliability and fitment.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43792092528821,"sku":"BKKX-M390004","price":103.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M390004_Fro.jpg?v=1774997539","url":"https:\/\/www.partcatalog.com\/products\/dorman-m390004-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}