{"product_id":"a-premium-rear-drum-brake-wheel-cylinder-15-16-inch-bore-cast-iron-for-chevrolet-silverado-gmc-sierra-1500-2005-2008","title":"A-Premium Rear Drum Brake Wheel Cylinder 15\/16 inch Bore — Cast Iron for Chevrolet Silverado \u0026 GMC Sierra 1500 (2005–2008)","description":"\u003cp\u003e\u003cstrong\u003eA-Premium rear drum brake wheel cylinder built from cast iron with a 15\/16\" (0.938\") bore — designed as a direct replacement for compatible Chevrolet Silverado and GMC Sierra 1500 rear applications.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis A-Premium wheel cylinder replaces worn or leaking rear drum cylinders on select Chevrolet and GMC 1500 series trucks. It’s manufactured from cast iron, threaded for standard M10 x 1.0 brake line fittings, and delivered with the bleeder screw installed to simplify bleeding. Quality control includes pressure and high-temperature testing to reduce the risk of premature failure when you restore braking performance.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles does this wheel cylinder fit?\u003c\/h3\u003e\n\u003cp\u003eThis wheel cylinder is intended for various Chevrolet Silverado and GMC Sierra 1500 rear drum configurations across model years in the mid-2000s. Fitment depends on cab type and model variations; confirm application using your vehicle details before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with multiple Silverado 1500 and Sierra 1500 rear drum setups from 2005–2008 depending on cab and Classic\/standard designations.\u003c\/li\u003e\n  \u003cli\u003eDesigned for rear driver and passenger sides where a 15\/16\" bore is specified.\u003c\/li\u003e\n  \u003cli\u003eMatches specific RPO codes (example: JF7) and OEM reference numbers for direct replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the key specifications and materials?\u003c\/h3\u003e\n\u003cp\u003eThe cylinder is cast iron for strength and corrosion resistance, with an internal diameter of 0.938\" (15\/16\") to match factory hydraulic proportions. Threads and bleeding hardware follow common brake-system standards for easy installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInside diameter: 0.938 inches (15\/16\").\u003c\/li\u003e\n  \u003cli\u003eBrake inlet thread size: M10 x 1.0; thread diameter: 10 mm.\u003c\/li\u003e\n  \u003cli\u003eMaterial: durable cast iron construction; bleeder screw included (cap not included).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow reliable and tested is this replacement cylinder?\u003c\/h3\u003e\n\u003cp\u003eA-Premium subjects this cylinder to a range of tests to ensure consistent hydraulic performance and thermal durability. Pressure cycling and elevated temperature testing help confirm the unit holds pressure and resists degradation under demanding braking conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePressure-tested across a broad range (from low to high pressure) to identify leaks and structural integrity issues.\u003c\/li\u003e\n  \u003cli\u003eHigh-temperature exposure test at 120°C to check seal and material stability.\u003c\/li\u003e\n  \u003cli\u003eIncludes bleeder screw installed to simplify bench pressure checks and on-vehicle bleeding.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho should choose this A-Premium wheel cylinder? Mechanics, DIY technicians, and fleet owners replacing leaking or seized rear drum wheel cylinders on compatible Chevrolet Silverado and GMC Sierra 1500 trucks will benefit. It’s suited for anyone seeking a cast-iron, OE-style replacement with verified pressure and temperature testing — verify your truck’s model year, cab type, and RPO codes to confirm fitment before purchase.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this cylinder include the bleeder screw cap?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No, the bleeder screw is included but the protective bleeder screw cap is not supplied.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What bore size and thread does this part use?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It has a 0.938\" (15\/16\") bore and uses an M10 x 1.0 brake inlet thread (10 mm diameter).\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"A-Premium","offers":[{"title":"Default Title","offer_id":48086742106270,"sku":"B0DB5NPTY8","price":54.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/a-premium-front-view-wheel-cylinder_b68849db-0c4f-42bc-b154-7301feee46ad.jpg?v=1785903347","url":"https:\/\/northtrailauto.ca\/products\/a-premium-rear-drum-brake-wheel-cylinder-15-16-inch-bore-cast-iron-for-chevrolet-silverado-gmc-sierra-1500-2005-2008","provider":"North Trail Auto","version":"1.0","type":"link"}