{"product_id":"mpa-electrical-nm51721-brake-master-cylinder","title":"MPA Electrical NM51721 Brake Master Cylinder","description":"\u003ch2\u003eBrake Master Cylinder for Reliable Pedal Response\u003c\/h2\u003e\u003cp\u003eMPA Electrical NM51721 is a new standard replacement brake master cylinder built for vehicles with front drum brakes. It uses an aluminum master cylinder body, a plastic reservoir, and a 0.75-inch bore to help restore consistent hydraulic pressure and pedal feel.\u003c\/p\u003e\u003cp\u003eFor drivers searching for a brake master cylinder for front drum brake applications, NM51721 provides a direct-service replacement solution. It includes the reservoir and cap, uses DOT 3 brake fluid, and is tested against OE specifications during production.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: MPA Electrical\u003c\/li\u003e\n\u003cli\u003ePart number: NM51721\u003c\/li\u003e\n\u003cli\u003eBrake master cylinder for front drum brakes\u003c\/li\u003e\n\u003cli\u003e0.75-inch bore diameter\u003c\/li\u003e\n\u003cli\u003eAluminum master cylinder construction\u003c\/li\u003e\n\u003cli\u003ePlastic reservoir with cap included\u003c\/li\u003e\n\u003cli\u003eStandard replacement grade\u003c\/li\u003e\n\u003cli\u003eUses DOT 3 brake fluid\u003c\/li\u003e\n\u003cli\u003eTwo mounting holes with 0.360-inch mounting hole diameter\u003c\/li\u003e\n\u003cli\u003eNew product condition\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003eMPA Electrical NM51721 is engineered to restore braking performance by matching OE specifications through controlled testing and strict production protocols. The aluminum cylinder body supports dependable hydraulic operation, while the integrated plastic reservoir and included cap simplify fluid service. This brake master cylinder is a practical choice for front drum brake systems where consistent pressure delivery and pedal response are required. If you are replacing a worn brake master cylinder on a vehicle with front drum brakes, NM51721 offers a direct-fit service part built around standard replacement specifications.\u003c\/p\u003e\u003cp\u003eThis part cross-references Monroe Shocks \u0026amp; Struts (e.g., 172286, 182286) for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Fix\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eLow or inconsistent brake pedal pressure\u003c\/li\u003e\n\u003cli\u003eBrake fluid leakage at the master cylinder\u003c\/li\u003e\n\u003cli\u003eSoft or sinking brake pedal feel\u003c\/li\u003e\n\u003cli\u003eReduced hydraulic response in front drum brake systems\u003c\/li\u003e\n\u003cli\u003eBrake performance loss caused by internal master cylinder wear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eConfirm the vehicle uses front drum brakes before ordering. Verify the 0.75-inch bore, two mounting holes, and mounting hole diameter against the original unit. Bench bleeding is recommended before installation, and the brake system should be filled with DOT 3 fluid only. Mounting hardware, push rod, brake booster, seals, and pressure switch are not included.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eMPA Electrical tests each brake master cylinder against OE specifications using proprietary processes and strict protocols to support consistent braking performance out of the box. Part number NM51721 is a new standard replacement component for service use.\u003c\/p\u003e","brand":"MPA Electrical","offers":[{"title":"Default Title","offer_id":52725014167733,"sku":"FQTW-NM51721","price":81.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/MV_NM51721_Fro.jpg?v=1782022531","url":"https:\/\/www.partcatalog.com\/products\/mpa-electrical-nm51721-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}