Wheel Cylinder, for Rear Beetle & Ghia 52-57, Each

OVERVIEW

When it comes to restoring or maintaining the braking performance of your vintage Volkswagen, there is no room for compromise. This premium rear wheel cylinder is engineered specifically for the 1952 to 1957 Beetle and the early 1956 to 1957 Karmann Ghia, providing the critical hydraulic pressure needed to expand your brake shoes against the drums. Over decades of service, original cast-iron cylinders often succumb to internal pitting caused by moisture absorption in the brake fluid, leading to sluggish response, fluid leaks, or total hydraulic failure. This replacement unit ensures that your "Oval Window" era VW stops with the same confidence and reliability it had when it first rolled off the assembly line in Wolfsburg. By replacing your aged components with these high-quality units, you are not just performing maintenance; you are safeguarding the legacy and safety of your air-cooled investment.

At Appletree Automotive, we understand that early VW brake systems require precision-manufactured parts to interface correctly with the vintage backing plates and star-adjuster mechanisms. This wheel cylinder features a high-grade cast iron body and premium internal EPDM rubber seals that are designed to withstand the heat and chemical rigors of modern DOT 3 or DOT 4 brake fluids. Each unit is precision-honed to ensure a perfect seal for the internal pistons, preventing the fluid bypass that often causes a "spongy" pedal feel. Whether you are finishing a concourse-level restoration of a 1954 Zwitter or simply keeping your 1957 Ghia daily driver roadworthy, this wheel cylinder provides the exact fit and finish required for a seamless installation. Don''t let a leaking cylinder ruin your brake shoes or your weekend drive; upgrade to a component that meets the demanding standards of the air-cooled community.

FITMENT

This rear wheel cylinder is designed for the following air-cooled Volkswagen models with standard swing-axle rear suspensions and drum brakes:

• Volkswagen Beetle (Type 1): 1952, 1953, 1954, 1955, 1956, 1957 (Including Oval Window and Split Window transition models).
• Volkswagen Karmann Ghia (Type 14): 1956, 1957.
• Note: This is a rear-specific cylinder. For 1952-1957 models, the mounting orientation and bore size are specific to the rear backing plate configuration.

SPECS

• Part Number: 113-611-053.
• Position: Rear (Left or Right side).
• Body Material: High-strength Cast Iron with corrosion-resistant coating.
• Seal Material: High-grade EPDM rubber for heat and fluid resistance.
• Bore Diameter: 17.46mm (11/16 inch) precision-honed.
• Inlet Thread: M10x1.0 (Standard VW brake line fitting).
• Bleeder Screw: Included and pre-installed.
• Dust Boots: Heavy-duty external boots to prevent debris entry.
• Compatibility: Suitable for use with DOT 3, DOT 4, and DOT 5.1 brake fluids.

PRO TIPS

1. The Golden Rule of Brake Fluid Maintenance

Whenever you replace a wheel cylinder, it is the absolute best time to perform a full system flush. Brake fluid is hygroscopic, meaning it actively absorbs moisture from the air over time. This moisture settles in the lowest points of the systemthe wheel cylinderscausing the internal pitting that leads to leaks. Don''t simply "gravity bleed" the new part; use a pressure bleeder or the two-person method to push fresh, clear fluid through the entire line until no air bubbles or dark, contaminated fluid remains. This ensures your new seals won''t be compromised by old grit or moisture-heavy fluid sitting in the lines.

2. Inspect Your Brake Shoes and Hardware

A leaking wheel cylinder almost always contaminates the brake shoes with fluid. Once the friction material on a brake shoe is soaked in brake fluid, it is effectively ruined; the fluid permeates the material and cannot be simply wiped off, leading to "grabbing" or uneven braking. While you have the drums off to replace the cylinder, inspect the shoes for saturation and check your return springs for tension. We highly recommend installing a fresh hardware kit and new shoes if there is any sign of fluid contamination to ensure your new cylinder can actually do its job of stopping the car safely.

3. Proper Star Adjuster Orientation

When reassembling the rear brakes on a 1952-1957 VW, pay close attention to the star adjusters. Before mounting the drum, ensure the adjusters are fully backed off so the shoes sit as close to the center as possible. Once the drum is on, use a brake adjustment tool through the backing plate holes to expand the shoes until they just touch the drum (you should hear a slight "shhh" sound when spinning the drum by hand), then back them off exactly two clicks. This ensures the wheel cylinder piston doesn''t have to travel too far to engage the brakes, giving you a much firmer and more responsive brake pedal.