GeoBrakes carries OEM-grade drum brake wheel cylinders confirmed to fit the Plymouth Reliant, the hydraulic actuators at the top of each drum brake assembly that convert brake fluid pressure into the mechanical force that pushes the Reliant shoes against the drum. Available in new and remanufactured options for your Reliant, every cylinder is bored to OEM specifications
The drum brake wheel cylinder on the Plymouth Reliant is the hydraulic component that actuates your Reliant drum brake shoes every time you press the brake pedal. Brake fluid pressure from the master cylinder enters the Reliant wheel cylinder and acts equally on two opposed pistons, pushing them outward simultaneously toward each shoe on the Plymouth Reliant. A leaking Reliant wheel cylinder actively bleeds hydraulic pressure from the brake circuit and contaminates the brake shoes with fluid, both of which directly compromise your ability to stop the Plymouth Reliant.
Plymouth Reliant drum brake wheel cylinders are particularly vulnerable to corrosion in American road salt conditions. Salt water penetrates the dust boots over time on the Reliant, attacking the cylinder bore surface. Once the Plymouth Reliant bore is pitted, new piston cup seals cannot maintain a leak-free seal. Internally corroded Reliant cylinders must be replaced, not rebuilt. Vehicles in high-salt urban environments often require Reliant wheel cylinder replacement on the same service interval as brake shoes.
GeoBrakes stocks both new OEM-specification wheel cylinders and quality remanufactured units for the Plymouth Reliant. New cylinders are the stronger choice for Reliant vehicles in high-corrosion environments. Remanufactured units offer excellent value for Plymouth Reliant vehicles in moderate conditions where the original bore was sound. Our vehicle selector confirms the correct Reliant cylinder, right bore diameter, port location, and mounting configuration, for your Reliant drum brake assembly before purchase.
Can I drive my Plymouth Reliant with a leaking wheel cylinder?
No. A leaking Reliant cylinder actively loses hydraulic pressure from the brake circuit, reducing stopping force on your Plymouth Reliant over time. Brake fluid that reaches the Reliant shoes renders the friction material ineffective. A leaking Plymouth Reliant wheel cylinder is an immediate safety concern that requires urgent attention.
Should I replace both wheel cylinders on my Plymouth Reliant at the same time?
Yes. If one Reliant cylinder has leaked or seized due to age and corrosion, the cylinder on the opposite side of the Plymouth Reliant has experienced identical conditions and is at a similar stage of deterioration. Replacing both ensures balanced hydraulic pressure on your Reliant and avoids a second service call within months.
Do I need to bleed the brakes on my Plymouth Reliant after replacing a wheel cylinder?
Yes. Replacing a Reliant wheel cylinder opens the hydraulic circuit, allowing air to enter. After installation on the Plymouth Reliant, the entire rear brake circuit must be bled to remove all air and restore a firm, consistent brake pedal on your Reliant.