A-Premium Front Drum Brake Wheel Cylinder for Volkswagen Beetle & Karmann Ghia – 0.875in Bore, Cast Iron OE Fit

This A-Premium front drum brake wheel cylinder is a cast-iron replacement built to restore proper front braking for classic Volkswagen Beetle and Karmann Ghia models from the mid‑1960s through the late‑1970s.

If you’re servicing a vintage VW with drum brakes, getting the correct wheel cylinder is essential for predictable pedal feel and even braking. This A-Premium unit is manufactured to match the original fit and function for select Volkswagen applications and is pressure- and high-temperature tested to help ensure reliability under road conditions. Before ordering, verify vehicle year and side (left/right) to confirm fitment.

Which Volkswagen models and years will this cylinder fit?

This wheel cylinder fits classic Volkswagen front drum brake systems on specified models. It is compatible with Volkswagen Beetle (1965–1979) and Karmann Ghia (1965–1966) for both front left and front right positions.

• Beetle: 1965 through 1979 — front left and right options available.
• Karmann Ghia: 1965–1966 — front left and right covered.
• Confirm exact application by entering vehicle details before purchase.

What are the key specifications and materials of this wheel cylinder?

The unit is die-cast from durable cast iron and machined to match OE dimensions for secure installation. Critical dimensions and thread sizes are provided so you can compare with your existing part prior to purchase.

• Material: cast iron for corrosion resistance and long life.
• Inside diameter: 0.875 inch (22.225 mm) — matches original bore size.
• Brake inlet thread: M10 x 1.0; thread diameter: 10 mm.
• Bleeder screw: included; bleeder screw cap: not included.

Does this part meet quality and safety testing standards?

A-Premium subjects each brake wheel cylinder to rigorous testing to reduce risk of failure and maintain performance under stress. Tests focus on pressure containment and temperature durability rather than claiming preventative warranties for all road events.

• Pressure tested across a wide range from 0.2 MPa up to 20 MPa.
• High-temperature validation at 120°C to assess thermal endurance.
• Manufactured to be compatible with OE mounting and hydraulic fittings.

How do I confirm I’m ordering the correct part for my car?

Before checkout, compare the listed reference numbers and the cylinder’s physical specifications with your existing component. Use your vehicle year, make and model entry on the product page and read the Special Notes to prevent mismatches.

• Reference numbers to check: W90549, WC37109, 113611057, 131611057, 131611057A.
• Verify inside diameter (0.875 inch) and M10 x 1.0 inlet thread against your current cylinder.
• Select left or right front mounting based on which side you are replacing.

Who this is for: This wheel cylinder is intended for mechanics, restoration hobbyists and owners of classic Volkswagen Beetles and Karmann Ghias who need a dependable, dimensionally accurate replacement for front drum brake systems. If you value OE-style fit, cast-iron durability and components that have passed pressure and temperature checks, this A-Premium cylinder offers a practical solution. If you’re unsure about fitment, match the reference numbers and thread/bore measurements or consult a technician before ordering.