{"product_id":"dorman-m66787-brake-master-cylinder","title":"Dorman M66787 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Chevrolet C20 and K20 Suburban\u003c\/h2\u003e\u003cp\u003eThe Dorman M66787 brake master cylinder is engineered to restore proper brake hydraulics in Chevrolet C20 Suburban and K20 Suburban models. Designed with durable cast iron and a 1.125-inch bore diameter, this master cylinder ensures consistent brake fluid pressure for safe stopping performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaster cylinder bore diameter: 1.125 inches for precise hydraulic control\u003c\/li\u003e\n\u003cli\u003eConstructed from cast iron for durability and long service life\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir for brake fluid storage and management\u003c\/li\u003e\n\u003cli\u003eTwo outlets with secondary outlet thread diameter of 0.5 inches and rearward outlet size of 9\/16-18\u003c\/li\u003e\n\u003cli\u003eMounting hardware not included, allowing compatibility with existing setups\u003c\/li\u003e\n\u003cli\u003eCompatible specifically with Chevrolet C20 Suburban and K20 Suburban models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman M66787 brake master cylinder is a direct replacement part designed to meet the hydraulic requirements of Chevrolet C20 Suburban and K20 Suburban vehicles. Its cast iron construction provides strength and resistance to wear, while the 1.125-inch bore diameter supports effective brake fluid pressure generation. The included reservoir simplifies brake fluid management, and the two outlet ports—featuring a secondary outlet thread diameter of 0.5 inches and a rearward outlet size of 9\/16-18—allow for proper brake line connections. This master cylinder does not include mounting hardware, so existing hardware can be reused during installation.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Resolution\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores brake fluid pressure in Chevrolet C20 Suburban and K20 Suburban brake systems\u003c\/li\u003e\n\u003cli\u003eReplaces worn or leaking master cylinders causing brake pedal sponginess or failure\u003c\/li\u003e\n\u003cli\u003eAddresses brake fluid reservoir leaks or contamination issues\u003c\/li\u003e\n\u003cli\u003eSolves inconsistent brake response due to damaged or corroded master cylinder components\u003c\/li\u003e\n\u003cli\u003eImproves overall brake system reliability and safety\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure compatibility with Chevrolet C20 Suburban and K20 Suburban models before installation\u003c\/li\u003e\n\u003cli\u003eReuse existing mounting hardware as it is not included with this part\u003c\/li\u003e\n\u003cli\u003eBleed the brake system thoroughly after installation to remove air and ensure proper hydraulic function\u003c\/li\u003e\n\u003cli\u003eInspect brake lines and fittings for wear or damage during installation\u003c\/li\u003e\n\u003cli\u003eFollow manufacturer torque specifications for mounting bolts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures the M66787 brake master cylinder to meet or exceed OEM specifications for fit, form, and function. The cast iron construction and precise bore diameter contribute to reliable brake system performance. While specific warranty details are not provided here, Dorman typically offers limited warranties on their brake hydraulics components to cover defects in materials and workmanship.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43789376880821,"sku":"BKKX-M66787","price":87.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M66787_Fro_c15a7570-3df9-4ea4-8cf3-062d5ea90605.jpg?v=1774997519","url":"https:\/\/www.partcatalog.com\/products\/dorman-m66787-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}