Standard/OEIn stock
$22.61
6 items in stock
Quality For FREE Shipping
14-WC370226• 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 Chevrolet Sonic, the hydraulic actuators at the top of each drum brake assembly that convert brake fluid pressure into the mechanical force that pushes the Sonic shoes against the drum. Available in new and remanufactured options for your Sonic, every cylinder is bored to OEM specifications
Standard/OE$22.61
6 items in stock
Select your vehicle to see compatible products and accurate pricing
The drum brake wheel cylinder on the Chevrolet Sonic is the hydraulic component that actuates your Sonic drum brake shoes every time you press the brake pedal. Brake fluid pressure from the master cylinder enters the Sonic wheel cylinder and acts equally on two opposed pistons, pushing them outward simultaneously toward each shoe on the Chevrolet Sonic. A leaking Sonic 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 Chevrolet Sonic.
Chevrolet Sonic drum brake wheel cylinders are particularly vulnerable to corrosion in American road salt conditions. Salt water penetrates the dust boots over time on the Sonic, attacking the cylinder bore surface. Once the Chevrolet Sonic bore is pitted, new piston cup seals cannot maintain a leak-free seal. Internally corroded Sonic cylinders must be replaced, not rebuilt. Vehicles in high-salt urban environments often require Sonic 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 Chevrolet Sonic. New cylinders are the stronger choice for Sonic vehicles in high-corrosion environments. Remanufactured units offer excellent value for Chevrolet Sonic vehicles in moderate conditions where the original bore was sound. Our vehicle selector confirms the correct Sonic cylinder, right bore diameter, port location, and mounting configuration, for your Sonic drum brake assembly before purchase.
Can I drive my Chevrolet Sonic with a leaking wheel cylinder?
No. A leaking Sonic cylinder actively loses hydraulic pressure from the brake circuit, reducing stopping force on your Chevrolet Sonic over time. Brake fluid that reaches the Sonic shoes renders the friction material ineffective. A leaking Chevrolet Sonic wheel cylinder is an immediate safety concern that requires urgent attention.
Should I replace both wheel cylinders on my Chevrolet Sonic at the same time?
Yes. If one Sonic cylinder has leaked or seized due to age and corrosion, the cylinder on the opposite side of the Chevrolet Sonic has experienced identical conditions and is at a similar stage of deterioration. Replacing both ensures balanced hydraulic pressure on your Sonic and avoids a second service call within months.
Do I need to bleed the brakes on my Chevrolet Sonic after replacing a wheel cylinder?
Yes. Replacing a Sonic wheel cylinder opens the hydraulic circuit, allowing air to enter. After installation on the Chevrolet Sonic, the entire rear brake circuit must be bled to remove all air and restore a firm, consistent brake pedal on your Sonic.