{"product_id":"acdelco-18m91-professional-brake-master-cylinder-assembly-18030333","title":"ACDelco 18M91 Professional Brake Master Cylinder Assembly - 28.575 mm Bore (18030333)","description":"\u003cp\u003eACDelco Professional Brake Master Cylinders use both aluminum and iron castings, making them a high quality replacement for many vehicles on the road today. These master cylinders contain both Ethylene Propylene (EPDM) and Styrene Butadiene (SBR) rubber components to provide superior resistance to heat, corrosion, and leakage. ACDelco Professional Brake Master Cylinders are ready to bench bleed and install right out of the box - no assembly required. These premium aftermarket replacement brake master cylinders are manufactured to meet your expectations for fit, form, and function.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBleeder Hoses Included: Yes\u003c\/li\u003e\n\u003cli\u003eBrake Booster Included: No\u003c\/li\u003e\n\u003cli\u003eClassification: Gold\u003c\/li\u003e\n\u003cli\u003eMaster Cylinder Bore Diameter: 28.575 mm\u003c\/li\u003e\n\u003cli\u003eMaster Cylinder Cap Included: Yes\u003c\/li\u003e\n\u003cli\u003eMaster Cylinder Material: Iron\u003c\/li\u003e\n\u003cli\u003eMounting Bracket Included: No\u003c\/li\u003e\n\u003cli\u003eMounting Hole Diameter: 0.423 in\u003c\/li\u003e\n\u003cli\u003eMounting Hole Quantity: 2\u003c\/li\u003e\n\u003cli\u003ePort Quantity: 2\u003c\/li\u003e\n\u003cli\u003ePrimary Outlet Thread Diameter: 0.5 in\u003c\/li\u003e\n\u003cli\u003ePushrod Included: No\u003c\/li\u003e\n\u003cli\u003eReservoir Included: Yes\u003c\/li\u003e\n\u003cli\u003eSecondary Outlet Thread Diameter: 0.563 in\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACDelco","offers":[{"title":"Default Title","offer_id":67669486698741,"sku":"FMPDEL18M91","price":55.07,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/1743\/4357\/files\/18030333.jpg?v=1791657162","url":"https:\/\/www.upstartautoparts.com\/products\/acdelco-18m91-professional-brake-master-cylinder-assembly-18030333","provider":"UpStart Auto Parts \u0026 More","version":"1.0","type":"link"}