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 Pontiac J2000 Sunbird, the hydraulic actuators at the top of each drum brake assembly that convert brake fluid pressure into the mechanical force that pushes the J2000 Sunbird shoes against the drum. Available in new and remanufactured options for your J2000 Sunbird, 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 Pontiac J2000 Sunbird is the hydraulic component that actuates your J2000 Sunbird drum brake shoes every time you press the brake pedal. Brake fluid pressure from the master cylinder enters the J2000 Sunbird wheel cylinder and acts equally on two opposed pistons, pushing them outward simultaneously toward each shoe on the Pontiac J2000 Sunbird. A leaking J2000 Sunbird 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 Pontiac J2000 Sunbird.
Pontiac J2000 Sunbird drum brake wheel cylinders are particularly vulnerable to corrosion in American road salt conditions. Salt water penetrates the dust boots over time on the J2000 Sunbird, attacking the cylinder bore surface. Once the Pontiac J2000 Sunbird bore is pitted, new piston cup seals cannot maintain a leak-free seal. Internally corroded J2000 Sunbird cylinders must be replaced, not rebuilt. Vehicles in high-salt urban environments often require J2000 Sunbird 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 Pontiac J2000 Sunbird. New cylinders are the stronger choice for J2000 Sunbird vehicles in high-corrosion environments. Remanufactured units offer excellent value for Pontiac J2000 Sunbird vehicles in moderate conditions where the original bore was sound. Our vehicle selector confirms the correct J2000 Sunbird cylinder, right bore diameter, port location, and mounting configuration, for your J2000 Sunbird drum brake assembly before purchase.
Can I drive my Pontiac J2000 Sunbird with a leaking wheel cylinder?
No. A leaking J2000 Sunbird cylinder actively loses hydraulic pressure from the brake circuit, reducing stopping force on your Pontiac J2000 Sunbird over time. Brake fluid that reaches the J2000 Sunbird shoes renders the friction material ineffective. A leaking Pontiac J2000 Sunbird wheel cylinder is an immediate safety concern that requires urgent attention.
Should I replace both wheel cylinders on my Pontiac J2000 Sunbird at the same time?
Yes. If one J2000 Sunbird cylinder has leaked or seized due to age and corrosion, the cylinder on the opposite side of the Pontiac J2000 Sunbird has experienced identical conditions and is at a similar stage of deterioration. Replacing both ensures balanced hydraulic pressure on your J2000 Sunbird and avoids a second service call within months.
Do I need to bleed the brakes on my Pontiac J2000 Sunbird after replacing a wheel cylinder?
Yes. Replacing a J2000 Sunbird wheel cylinder opens the hydraulic circuit, allowing air to enter. After installation on the Pontiac J2000 Sunbird, the entire rear brake circuit must be bled to remove all air and restore a firm, consistent brake pedal on your J2000 Sunbird.