Quinton Hazell Wheel Brake Cylinder - BWC3503
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Product Information
Full details
The Quinton Hazell Wheel Brake Cylinder (BWC3503) is designed for vehicle owners and mechanics seeking a reliable, OE-quality replacement component for their drum brake system. This cylinder offers consistent hydraulic pressure and long-term durability, serving as a direct-fit solution that minimizes installation time. While it is engineered for high performance, users should note that as a safety-critical component, it must be installed by qualified personnel to ensure proper brake bleeding and system integrity.
All features
| Model Part Number | BWC3503 |
|---|---|
| Brand | Quinton Hazell |
Extended Product Information
FAQs
Is the BWC3503 a direct fit for my vehicle?
The BWC3503 is a direct replacement for compatible vehicles; please verify your vehicle's specific fitment using the MPN BWC3503 against your car's make and model year.
Do I need to replace brake shoes when changing the cylinder?
It is highly recommended to inspect brake shoes for contamination or uneven wear whenever a wheel cylinder is replaced.
What type of brake fluid should I use with this cylinder?
Always use the brake fluid type (e.g., DOT 3, DOT 4) recommended in your vehicle's owner manual.
Can I replace just one wheel cylinder?
While it is possible, it is often best practice to replace wheel cylinders in pairs (left and right) to ensure even braking performance.
Does this cylinder come pre-greased?
It is recommended to use specific brake-safe lubricant on moving parts, but ensure no lubricant touches the rubber seals or the brake shoes.
Troubleshooting
Spongy brake pedal after installation
Air is trapped in the hydraulic lines. Perform a complete brake system bleed according to the service manual.
Fluid leaking around the wheel cylinder
Check that the flare nut on the brake line is properly tightened and the cylinder mounting bolts are torqued to factory specifications.
Brake shoe not moving upon pedal depression
Verify that the brake lines are clear of blockages and that the cylinder is receiving proper hydraulic pressure.
Pros and Cons
Pros
- Matches OE specifications for reliable safety
- Direct fit for hassle-free installation
- Tested for durability under high pressure
- High-quality seals prevent hydraulic fluid leaks
Cons
- Requires professional installation for safety reasons
- Requires complete brake system bleeding after installation
- Specific to drum brake configurations only
Setup, Compatibility & Care
Installation requires standard automotive hand tools, including flare-nut wrenches for the hydraulic lines. To ensure compatibility, always cross-reference the `BWC3503` part number with your vehicle’s specific braking configuration in the manufacturer’s catalog. During setup, ensure that the mating surfaces on the brake backplate are clean and free of rust or debris to allow the cylinder to seat perfectly. Care should be taken not to introduce contaminants into the hydraulic system. After replacement, the braking system must be bled thoroughly to remove any air pockets; failure to bleed the system will result in a spongy brake pedal and reduced stopping power.