A-Premium Rear Drum Brake Wheel Cylinder for Volkswagen Beetle & Karmann Ghia — 11/16" Bore, Cast Iron

A-Premium's rear drum brake wheel cylinder is a direct-fit replacement for select Volkswagen Beetle, Super Beetle, and Karmann Ghia models, restoring proper hydraulic function to the rear brakes.

This cast-iron wheel cylinder is manufactured to match original equipment dimensions (11/16 inch bore, 0.688" inside diameter) and is intended for drivers who need a dependable, OEM-style rear brake wheel cylinder for classic Volkswagen vehicles. It fits rear driver and passenger sides of Volkswagen Beetle 1968–1978, Super Beetle 1971–1978, and Karmann Ghia 1968–1974. Each unit includes the bleeder screw and is pressure- and high-temperature-tested to verify durability under typical braking conditions.

Will this wheel cylinder fit my classic Volkswagen?

Check your vehicle year and model against the stated fitment list before ordering. The cylinder is designed for rear applications on specific Beetle, Super Beetle, and Karmann Ghia years and matches common OEM reference numbers for easy cross-referencing.

• Compatible models: VW Beetle 1968–1978, Super Beetle 1971–1978, Karmann Ghia 1968–1974
• Bore size: 11/16 inch (0.688" inside diameter) for original fitment
• Reference numbers: W93356, 2741, 113611053B for compatibility checking
• Install both sides or replace as needed for balanced braking

How is the A-Premium cylinder built and tested?

The component is machined from cast iron and threaded to match factory brake line connections. A-Premium subjects each cylinder to pressure testing across a broad range and a high-temperature durability check to evaluate performance and seal reliability.

• Material: cast iron for strength and longevity
• Thread size: M10 x 1.0 brake inlet thread
• Tests include pressure cycles from 0.2MPa to 20MPa and high-temperature exposure at 120°C
• Includes bleeder screw (cap not included)

What do I need to know for installation and maintenance?

Installation follows standard drum brake wheel cylinder replacement procedures; bleeding the brakes after installation is required to remove air from the hydraulic circuit. Confirm the thread and inlet dimensions and use proper torque values and brake fluid type recommended for your vehicle.

• Brake inlet thread: M10 x 1.0 — verify line fitting compatibility
• Includes bleeder screw for air removal; cap not supplied
• Recommended to replace or inspect brake hardware and seals during installation
• Bleed system thoroughly to ensure even rear braking response

What warranty and support does A-Premium provide?

A-Premium backs this wheel cylinder with a one-year unlimited-mileage guarantee, reflecting confidence in fit and manufacturing. Customer guidance and part cross-references are provided so you can confirm match before purchase.

• One-year unlimited-mileage guarantee for repair or replacement
• Part references listed to help confirm correct application
• Support available for ordering and fitment questions

Who is this for: This wheel cylinder is intended for owners, restorers, and mechanics working on classic Volkswagen Beetle, Super Beetle, or Karmann Ghia rear drum brakes who want an OEM-dimension replacement made from cast iron and verified by pressure and temperature testing. If you need a reliable, serviceable rear wheel cylinder with a clear fitment list and manufacturer support, this A-Premium unit was made to replace worn or leaking rear cylinders in the specified classic VW models.