Metric Steel Brake Line 13 Inches

Reliable Hydraulic Performance for Your Classic Air-Cooled VW

When it comes to the safety and stopping power of your vintage Volkswagen, there is absolutely no room for compromise. This 13-inch EMPI metric steel brake line is engineered to provide the high-pressure integrity required for a firm, responsive brake pedal. Over decades of service, original factory lines often succumb to internal corrosion from moisture-absorbing brake fluid or external pitting from road salt and debris. Replacing these brittle, dangerous lines with our premium zinc-plated steel tubing ensures that your hydraulic system remains sealed and efficient. Designed specifically for the metric requirements of German engineering, this line features the critical 10mm x 1.0 thread pitch and the standard European bubble flare, providing a leak-free seal against your master cylinder, wheel cylinders, or flexible rubber hoses. Whether you are performing a full pan-off restoration or a quick weekend repair, this 13-inch section is a versatile and essential component for maintaining the structural integrity of your VW''s braking circuit.

Precision is everything in a hydraulic system, and this steel brake line delivers exactly that. Unlike generic lines found at local auto parts stores that may require awkward adapters or incorrect flares, this EMPI-sourced line is purpose-built for the air-cooled community. The 13-inch length is a common requirement for various junctions throughout the Type 1, Type 2, and Type 3 chassis, often utilized in the rear trailing arm sections or connecting the master cylinder to the main tunnel lines. The steel construction offers superior expansion resistance compared to aged lines, meaning more of your foot''s effort is translated directly into clamping force at the drums or calipers. Investing in high-quality steel lines is the best way to eliminate that "spongy" pedal feel that plagues so many classic Beetles and Dune Buggies. At Appletree Automotive, we understand that "good enough" isn''t in the vocabulary of a true VW enthusiast, which is why we offer these robust, exact-fit metric lines to keep your air-cooled pride and joy stopping on a dime.

Detailed Fitment and Application Guide

This 13-inch metric steel brake line is a universal fitment for many positions across the air-cooled Volkswagen lineup. While specific routing can vary by year and custom modifications, it is commonly used on the following models:

• VW Beetle (Standard & Super): 1950 through 1979 (All models).
• VW Karmann Ghia: 1956 through 1974.
• VW Bus / Transporter (Type 2): 1950 through 1979 (Bay Window and Split Window).
• VW Type 3 (Squareback, Fastback, Notchback): 1961 through 1973.
• VW Thing (Type 181): 1973 through 1974.
• Custom Applications: Ideal for Dune Buggies, Sand Rails, Baja Bugs, and Meyer''s Manx builds using VW transaxles and braking components.

Technical Specifications and Dimensions

Ensuring you have the right hardware is the first step to a successful brake job. Below are the technical details for the 113-611-781D metric line:

• Total Length: 13 Inches (Approximately 330mm).
• Fitting Thread Size: M10 x 1.0 (Metric Standard).
• Flare Type: European Bubble Flare (DIN / ISO Flare).
• Material: High-strength, zinc-plated steel for corrosion resistance.
• Outside Diameter: Standard 4.75mm (3/16 inch) hydraulic tubing.
• Quantity: Sold individually (Each).
• Manufacturer: EMPI (Part Number 113-611-781D).
• Compatibility: Compatible with DOT 3, DOT 4, and DOT 5.1 brake fluids.

Expert Pro Tips from the Appletree Garage

Tip 1: Use a Dedicated Tube Bender for Clean Radius Curves

While steel brake lines are pliable, you should never attempt to bend them by hand over a sharp edge. Doing so can cause the line to kink, which creates a significant restriction in fluid flow and a structural weak point that could fail under panic-braking pressure. We highly recommend using a handheld tubing bender to achieve smooth, professional-looking radii. If you must make a slight adjustment by hand, use your thumbs as a wide mandrel to distribute the pressure evenly and avoid any "V" shaped deformities in the tubing wall.

Tip 2: Avoid Cross-Threading by Hand-Starting All Fittings

The 10mm x 1.0 threads used on VW brake components are fine-pitched and can be easily stripped if the fitting is forced. When installing this 13-inch line into a wheel cylinder or a brass T-fitting, always start the threads by hand. You should be able to turn the fitting several full rotations before needing a wrench. Once hand-tight, use a 10mm flare nut wrench (line wrench) rather than a standard open-ended wrench. A flare nut wrench grips more sides of the hex head, preventing the rounding of the fitting, which is a common nightmare during future maintenance.

Tip 3: Inspect for Vibration Rub Points After Installation

After you have successfully installed and bled your new brake lines, it is crucial to inspect the entire length of the 13-inch span for potential rub points. On an air-cooled VW, vibrations from the engine and rough terrain can cause a steel line to saw through itself if it is touching a sharp frame edge or a moving suspension component. Use rubber-lined P-clips or plastic grommets where the line passes through the chassis. Ensure there is adequate clearance from the exhaust system, as excessive heat can boil the brake fluid inside the line, leading to catastrophic brake fade and a complete loss of stopping power.