Standard/OEIn stock
$12.66
10 items in stock
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14-WC37778• Rear• Drum Brake Wheel Cylinder
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GeoBrakes carries OEM-grade drum brake wheel cylinders confirmed to fit the Buick Skylark, the hydraulic actuators at the top of each drum brake assembly that convert brake fluid pressure into the mechanical force that pushes the Skylark shoes against the drum. Available in new and remanufactured options for your Skylark, every cylinder is bored to OEM specifications
Standard/OE$12.66
10 items in stock
Select your vehicle to see compatible products and accurate pricing
The drum brake wheel cylinder on the Buick Skylark is the hydraulic component that actuates your Skylark drum brake shoes every time you press the brake pedal. Brake fluid pressure from the master cylinder enters the Skylark wheel cylinder and acts equally on two opposed pistons, pushing them outward simultaneously toward each shoe on the Buick Skylark. A leaking Skylark 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 Skylark.
Buick Skylark drum brake wheel cylinders are particularly vulnerable to corrosion in American road salt conditions. Salt water penetrates the dust boots over time on the Skylark, attacking the cylinder bore surface. Once the Buick Skylark bore is pitted, new piston cup seals cannot maintain a leak-free seal. Internally corroded Skylark cylinders must be replaced, not rebuilt. Vehicles in high-salt urban environments often require Skylark 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 Skylark. New cylinders are the stronger choice for Skylark vehicles in high-corrosion environments. Remanufactured units offer excellent value for Buick Skylark vehicles in moderate conditions where the original bore was sound. Our vehicle selector confirms the correct Skylark cylinder, right bore diameter, port location, and mounting configuration, for your Skylark drum brake assembly before purchase.
Can I drive my Buick Skylark with a leaking wheel cylinder?
No. A leaking Skylark cylinder actively loses hydraulic pressure from the brake circuit, reducing stopping force on your Buick Skylark over time. Brake fluid that reaches the Skylark shoes renders the friction material ineffective. A leaking Buick Skylark wheel cylinder is an immediate safety concern that requires urgent attention.
Should I replace both wheel cylinders on my Buick Skylark at the same time?
Yes. If one Skylark cylinder has leaked or seized due to age and corrosion, the cylinder on the opposite side of the Buick Skylark has experienced identical conditions and is at a similar stage of deterioration. Replacing both ensures balanced hydraulic pressure on your Skylark and avoids a second service call within months.
Do I need to bleed the brakes on my Buick Skylark after replacing a wheel cylinder?
Yes. Replacing a Skylark wheel cylinder opens the hydraulic circuit, allowing air to enter. After installation on the Buick Skylark, the entire rear brake circuit must be bled to remove all air and restore a firm, consistent brake pedal on your Skylark.