{"product_id":"dorman-m390121-brake-master-cylinder","title":"Dorman M390121 Brake Master Cylinder","description":"\u003ch2\u003eOverview of Dorman Brake Master Cylinder for Nissan Maxima\u003c\/h2\u003e\u003cp\u003eThe Dorman M390121 brake master cylinder is designed specifically for Nissan Maxima models, providing reliable brake hydraulics performance. This aluminum master cylinder includes a reservoir and sensor, engineered to meet the precise specifications required for optimal braking function.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Nissan Maxima vehicles\u003c\/li\u003e\n\u003cli\u003eMaster cylinder bore diameter of 0.938 inches\u003c\/li\u003e\n\u003cli\u003eConstructed from durable aluminum material\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir and sensor for integrated brake system monitoring\u003c\/li\u003e\n\u003cli\u003eFour outlet ports with rearward outlet size M10 x 1.0 and thread pitch 1.0\u003c\/li\u003e\n\u003cli\u003eSecondary outlet thread diameter of 10 mm\u003c\/li\u003e\n\u003cli\u003eMounting hardware not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Features and Specifications\u003c\/h2\u003e\u003cp\u003eThe Dorman M390121 brake master cylinder features a 0.938-inch bore diameter, ensuring precise hydraulic pressure control for the Nissan Maxima brake system. Its aluminum construction offers corrosion resistance and long-term durability under demanding conditions. The included reservoir allows for proper brake fluid storage, while the integrated sensor supports brake system diagnostics and safety monitoring. This master cylinder has four outlets, including a rearward outlet sized M10 x 1.0 with a 1.0 thread pitch, and a secondary outlet thread diameter of 10 mm, facilitating proper brake line connections. Note that mounting hardware is not included with this part.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Resolution\u003c\/h2\u003e\u003cp\u003eThis brake master cylinder is used to replace worn or damaged units in Nissan Maxima brake hydraulic systems. It addresses several issues, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrake pedal sinking or sponginess due to internal leaks\u003c\/li\u003e\n\u003cli\u003eBrake fluid leaks from a failing master cylinder reservoir or seals\u003c\/li\u003e\n\u003cli\u003eInconsistent brake pressure affecting stopping performance\u003c\/li\u003e\n\u003cli\u003eFaulty brake fluid level sensor triggering warning lights\u003c\/li\u003e\n\u003cli\u003eCorrosion or wear compromising hydraulic integrity\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Dorman M390121 brake master cylinder on a Nissan Maxima, ensure the brake system is properly bled to remove air and maintain hydraulic pressure. Verify compatibility with your vehicle’s model year and brake line fittings, especially the M10 x 1.0 rearward outlet thread size. Since mounting hardware is not included, retain or source appropriate fasteners for secure installation. Handle the aluminum component carefully to avoid damage during installation.\u003c\/p\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 Maxima brake hydraulics. The part undergoes quality control testing to ensure reliable performance and durability. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. Consult product documentation or the supplier for exact warranty terms.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43792098885813,"sku":"BKKX-M390121","price":141.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M390121_Fro.jpg?v=1774997548","url":"https:\/\/www.partcatalog.com\/products\/dorman-m390121-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}