{"product_id":"dorman-m39630-brake-master-cylinder","title":"Dorman M39630 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Chevrolet and GMC Vehicles\u003c\/h2\u003e\u003cp\u003eThe Dorman M39630 Brake Master Cylinder is engineered to restore proper brake hydraulics in select Chevrolet and GMC models. Designed with durable aluminum construction and a built-in reservoir, this master cylinder ensures consistent brake fluid delivery for safe stopping performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAluminum master cylinder material for corrosion resistance and durability\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir for brake fluid storage\u003c\/li\u003e\n\u003cli\u003eDual outlet design with 1\/2-20 rearward outlet and 9\/16-18 secondary outlet thread diameters\u003c\/li\u003e\n\u003cli\u003eMaster cylinder bore diameter of 1-1\/4 inch and 40mm for precise hydraulic pressure\u003c\/li\u003e\n\u003cli\u003eCompatible with Chevrolet G30, GMC P20, P30, P2500, and P3500 models\u003c\/li\u003e\n\u003cli\u003ePart number M39630 for accurate replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details and Specifications\u003c\/h2\u003e\u003cp\u003eThis Dorman brake master cylinder (part number M39630) is constructed from aluminum to provide long-lasting resistance to wear and corrosion. It includes an integrated reservoir to hold brake fluid, eliminating the need for a separate component. The master cylinder features two outlets: a rearward outlet sized 1\/2-20 and a secondary outlet with a 9\/16-18 thread diameter, supporting proper brake line connections. The bore diameter measures 1-1\/4 inch (40mm), which is critical for maintaining the correct hydraulic pressure within the brake system. This part is designed specifically for use in Chevrolet G30 and GMC P20, P30, P2500, and P3500 vehicles, ensuring compatibility and reliable performance.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Resolution\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores brake pressure in vehicles experiencing soft or spongy brake pedal feel\u003c\/li\u003e\n\u003cli\u003eReplaces leaking or damaged master cylinders causing brake fluid loss\u003c\/li\u003e\n\u003cli\u003eAddresses brake system failure due to worn internal seals or corrosion\u003c\/li\u003e\n\u003cli\u003eImproves brake response in Chevrolet G30 and GMC P-series vans and trucks\u003c\/li\u003e\n\u003cli\u003eEliminates inconsistent braking caused by faulty master cylinder components\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Dorman M39630 master cylinder requires proper brake system bleeding to remove air and ensure optimal hydraulic function. Mounting hardware is not included, so existing hardware should be inspected and replaced if necessary. Verify thread sizes on brake lines match the 1\/2-20 rearward outlet and 9\/16-18 secondary outlet to ensure proper fitment. It is recommended to inspect related brake components such as brake lines and wheel cylinders during installation for comprehensive brake system maintenance.\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 fit, form, and function. The aluminum construction and integrated reservoir contribute to the part's durability and reliability. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulics products. Consult product packaging or Dorman's official resources for exact warranty terms.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43789346308277,"sku":"BKKX-M39630","price":123.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M39630_Fro.jpg?v=1774997488","url":"https:\/\/www.partcatalog.com\/products\/dorman-m39630-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}