{"product_id":"dorman-w37868-drum-brake-wheel-cylinder","title":"Dorman W37868 Drum Brake Wheel Cylinder - Rear or Rear Left","description":"\u003ch2\u003eOverview of Dorman Drum Brake Wheel Cylinder W37868\u003c\/h2\u003e\u003cp\u003eThe Dorman W37868 drum brake wheel cylinder is engineered for reliable brake hydraulics performance on Toyota 4Runner models. Designed with durable cast iron construction, this wheel cylinder ensures consistent braking pressure and long service life.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIncludes bleeder screw for easy brake fluid bleeding\u003c\/li\u003e\n\u003cli\u003eConstructed from cast iron for strength and durability\u003c\/li\u003e\n\u003cli\u003eBore diameter of 0.875 inches for precise fitment\u003c\/li\u003e\n\u003cli\u003eBrake component inlet thread size: (2) M10 x 1.0\u003c\/li\u003e\n\u003cli\u003eThread diameter and pitch: M10 with 1.0 thread pitch\u003c\/li\u003e\n\u003cli\u003ePackage contains one drum brake wheel cylinder\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman W37868 drum brake wheel cylinder is specifically designed to meet the brake hydraulics requirements of Toyota 4Runner vehicles. Its cast iron casting material provides robust resistance to wear and corrosion, essential for maintaining brake system integrity under demanding conditions. The 0.875-inch bore diameter ensures proper piston movement within the cylinder, contributing to effective brake shoe engagement. Thread specifications, including the M10 x 1.0 inlet threads and matching thread pitch, allow for secure and leak-free connections to the brake lines. The included bleeder screw facilitates straightforward removal of air from the brake system, improving brake responsiveness and safety.\u003c\/p\u003e\u003ch2\u003eCompatible Applications and Common Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for leaking or seized drum brake wheel cylinders on Toyota 4Runner models\u003c\/li\u003e\n\u003cli\u003eResolves brake fluid leaks caused by worn or damaged seals\u003c\/li\u003e\n\u003cli\u003eAddresses uneven brake shoe wear due to inconsistent hydraulic pressure\u003c\/li\u003e\n\u003cli\u003eFixes spongy brake pedal feel resulting from trapped air in brake lines\u003c\/li\u003e\n\u003cli\u003eRestores proper brake function after corrosion or piston sticking\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Dorman W37868 wheel cylinder, ensure the brake system is fully depressurized and the vehicle is securely supported. Use the included bleeder screw to purge air from the brake lines after installation. Verify thread compatibility with existing brake line fittings to prevent leaks. It is recommended to inspect brake shoes and hardware during replacement to maintain optimal braking performance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures the W37868 wheel cylinder to meet or exceed OEM specifications for Toyota 4Runner brake hydraulics. The cast iron construction and precise machining contribute to reliable operation and durability. This part is backed by Dorman's standard warranty coverage, providing confidence in its quality and fitment.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43795490635957,"sku":"BKKX-W37868","price":32.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_W37868_Fro.jpg?v=1774997909","url":"https:\/\/www.partcatalog.com\/products\/dorman-w37868-drum-brake-wheel-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}