{"product_id":"dorman-m39647-brake-master-cylinder","title":"Dorman M39647 Brake Master Cylinder","description":"\u003ch2\u003eOverview of the Dorman Brake Master Cylinder M39647\u003c\/h2\u003e\u003cp\u003eThe Dorman Brake Master Cylinder M39647 is designed specifically for Chevrolet and GMC C1500 models, providing reliable brake hydraulics performance. This master cylinder features dual bore diameters and an included reservoir to ensure efficient brake fluid management.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Chevrolet and GMC C1500 trucks\u003c\/li\u003e\n\u003cli\u003eDual master cylinder bore diameters: 24mm and 36mm\u003c\/li\u003e\n\u003cli\u003eConstructed from durable aluminum material\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir for brake fluid\u003c\/li\u003e\n\u003cli\u003eTwo outlet ports with rearward outlet size 1\/2-20 and secondary outlet thread diameter 9\/16-18\u003c\/li\u003e\n\u003cli\u003eMounting hardware not included\u003c\/li\u003e\n\u003cli\u003ePackage contains the master cylinder only\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman M39647 brake master cylinder is engineered with precision to meet the hydraulic braking needs of Chevrolet and GMC C1500 trucks. Featuring two bore diameters—24mm and 36mm—this master cylinder balances pressure distribution for optimal braking response. Its aluminum construction offers corrosion resistance and durability under demanding conditions. The included reservoir simplifies brake fluid storage and maintenance, while the two outlet ports with specific thread sizes (1\/2-20 rearward outlet and 9\/16-18 secondary outlet) ensure compatibility with the vehicle’s brake lines. This part does not include mounting hardware or sensors, focusing solely on the master cylinder component.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Resolution\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores proper brake fluid pressure in Chevrolet and GMC C1500 models\u003c\/li\u003e\n\u003cli\u003eReplaces worn or leaking master cylinders causing brake pedal issues\u003c\/li\u003e\n\u003cli\u003eAddresses brake fluid reservoir leaks or damage\u003c\/li\u003e\n\u003cli\u003eSolves inconsistent braking performance due to master cylinder failure\u003c\/li\u003e\n\u003cli\u003eEliminates brake pedal sinking or sponginess related to hydraulic faults\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure compatibility with Chevrolet and GMC C1500 before installation\u003c\/li\u003e\n\u003cli\u003eBrake fluid should be fully drained and system bled after installation\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools for outlet thread sizes 1\/2-20 and 9\/16-18\u003c\/li\u003e\n\u003cli\u003eMounting hardware must be sourced separately as it is not included\u003c\/li\u003e\n\u003cli\u003eInspect brake lines and fittings for wear during replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures the M39647 brake master cylinder to meet or exceed OEM specifications for Chevrolet and GMC C1500 vehicles. The aluminum construction and precise bore diameters contribute to long-lasting performance. While mounting hardware and sensors are not included, the master cylinder itself is backed by Dorman’s quality standards. Please refer to Dorman’s official warranty policy for coverage details.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43789347553461,"sku":"BKKX-M39647","price":155.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M39647_Fro.jpg?v=1774997491","url":"https:\/\/www.partcatalog.com\/products\/dorman-m39647-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}