Raybestos WC37864 Drum Brake Wheel Cylinder Rear

Raybestos WC37864 Element3 Rear Drum Brake Wheel Cylinder is a rear brake component listed as a professional-grade, Element3 replacement for select late-1990s Mopar platforms. Specifically, it is shown as compatible with 1990–1995 Chrysler LeBaron and 1990–1995 Plymouth Acclaim, per retailer product pages, making it a targeted option for those models' rear drum brake assemblies. The WC37864 designation appears across multiple suppliers (BuyBrakes, CARiD, Walmart, FinditParts), confirming the model and its rear-wheel cylinder function within drum-brake systems. This part handles hydraulic actuation to transfer brake fluid pressure into piston movement on the rear wheel, enabling the rear brake shoes to engage when braking. It is designed to fit the rear drum brake layout used on the specified vehicles and is compatible with DOT-approved silicone or glycol-based brake fluids, per catalog guidance. The combination of Raybestos branding, Element3 lineage, and the explicit model-year fitment provides a reliable replacement option for owners performing brake maintenance on the affected years and models. When shopping, verify the exact year and trim of your LeBaron or Acclaim to confirm fitment with WC37864.