Standard/OEIn stock
$15.59
10 items in stock
Quality For FREE Shipping
14-WC370190• Rear• Drum Brake Wheel Cylinder
Add Vehicle to Confirm Fitment
Select your vehicle to see compatible products and accurate pricing
GeoBrakes carries OEM-grade drum brake wheel cylinders confirmed to fit the Buick Park Avenue, the hydraulic actuators at the top of each drum brake assembly that convert brake fluid pressure into the mechanical force that pushes the Park Avenue shoes against the drum. Available in new and remanufactured options for your Park Avenue, every cylinder is bored to OEM specifications
Standard/OE$15.59
10 items in stock
Select your vehicle to see compatible products and accurate pricing
The drum brake wheel cylinder on the Buick Park Avenue is the hydraulic component that actuates your Park Avenue drum brake shoes every time you press the brake pedal. Brake fluid pressure from the master cylinder enters the Park Avenue wheel cylinder and acts equally on two opposed pistons, pushing them outward simultaneously toward each shoe on the Buick Park Avenue. A leaking Park Avenue 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 Buick Park Avenue.
Buick Park Avenue drum brake wheel cylinders are particularly vulnerable to corrosion in American road salt conditions. Salt water penetrates the dust boots over time on the Park Avenue, attacking the cylinder bore surface. Once the Buick Park Avenue bore is pitted, new piston cup seals cannot maintain a leak-free seal. Internally corroded Park Avenue cylinders must be replaced, not rebuilt. Vehicles in high-salt urban environments often require Park Avenue 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 Buick Park Avenue. New cylinders are the stronger choice for Park Avenue vehicles in high-corrosion environments. Remanufactured units offer excellent value for Buick Park Avenue vehicles in moderate conditions where the original bore was sound. Our vehicle selector confirms the correct Park Avenue cylinder, right bore diameter, port location, and mounting configuration, for your Park Avenue drum brake assembly before purchase.
Can I drive my Buick Park Avenue with a leaking wheel cylinder?
No. A leaking Park Avenue cylinder actively loses hydraulic pressure from the brake circuit, reducing stopping force on your Buick Park Avenue over time. Brake fluid that reaches the Park Avenue shoes renders the friction material ineffective. A leaking Buick Park Avenue wheel cylinder is an immediate safety concern that requires urgent attention.
Should I replace both wheel cylinders on my Buick Park Avenue at the same time?
Yes. If one Park Avenue cylinder has leaked or seized due to age and corrosion, the cylinder on the opposite side of the Buick Park Avenue has experienced identical conditions and is at a similar stage of deterioration. Replacing both ensures balanced hydraulic pressure on your Park Avenue and avoids a second service call within months.
Do I need to bleed the brakes on my Buick Park Avenue after replacing a wheel cylinder?
Yes. Replacing a Park Avenue wheel cylinder opens the hydraulic circuit, allowing air to enter. After installation on the Buick Park Avenue, the entire rear brake circuit must be bled to remove all air and restore a firm, consistent brake pedal on your Park Avenue.