Standard/OEIn stock
$18.09
10 items in stock
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14-WC370108• Rear• Drum Brake Wheel Cylinder
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GeoBrakes carries OEM-grade drum brake wheel cylinders confirmed to fit the Kia Optima, the hydraulic actuators at the top of each drum brake assembly that convert brake fluid pressure into the mechanical force that pushes the Optima shoes against the drum. Available in new and remanufactured options for your Optima, every cylinder is bored to OEM specifications
Standard/OE$18.09
10 items in stock
Select your vehicle to see compatible products and accurate pricing
The drum brake wheel cylinder on the Kia Optima is the hydraulic component that actuates your Optima drum brake shoes every time you press the brake pedal. Brake fluid pressure from the master cylinder enters the Optima wheel cylinder and acts equally on two opposed pistons, pushing them outward simultaneously toward each shoe on the Kia Optima. A leaking Optima 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 Kia Optima.
Kia Optima drum brake wheel cylinders are particularly vulnerable to corrosion in American road salt conditions. Salt water penetrates the dust boots over time on the Optima, attacking the cylinder bore surface. Once the Kia Optima bore is pitted, new piston cup seals cannot maintain a leak-free seal. Internally corroded Optima cylinders must be replaced, not rebuilt. Vehicles in high-salt urban environments often require Optima 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 Kia Optima. New cylinders are the stronger choice for Optima vehicles in high-corrosion environments. Remanufactured units offer excellent value for Kia Optima vehicles in moderate conditions where the original bore was sound. Our vehicle selector confirms the correct Optima cylinder, right bore diameter, port location, and mounting configuration, for your Optima drum brake assembly before purchase.
Can I drive my Kia Optima with a leaking wheel cylinder?
No. A leaking Optima cylinder actively loses hydraulic pressure from the brake circuit, reducing stopping force on your Kia Optima over time. Brake fluid that reaches the Optima shoes renders the friction material ineffective. A leaking Kia Optima wheel cylinder is an immediate safety concern that requires urgent attention.
Should I replace both wheel cylinders on my Kia Optima at the same time?
Yes. If one Optima cylinder has leaked or seized due to age and corrosion, the cylinder on the opposite side of the Kia Optima has experienced identical conditions and is at a similar stage of deterioration. Replacing both ensures balanced hydraulic pressure on your Optima and avoids a second service call within months.
Do I need to bleed the brakes on my Kia Optima after replacing a wheel cylinder?
Yes. Replacing a Optima wheel cylinder opens the hydraulic circuit, allowing air to enter. After installation on the Kia Optima, the entire rear brake circuit must be bled to remove all air and restore a firm, consistent brake pedal on your Optima.