
Over time, internal rubber hoses can degrade due to exposure to heat, moisture, and environmental contaminants, leading to pressure loss, uneven caliper response, and potential hydraulic fluid leaks. This Wilwood Flexline Kit offers a high-strength, heavy-wall construction designed to withstand severe-duty conditions, restoring immediate hydraulic responsiveness and preventing volumetric expansion during heavy braking. Upgrading to this premium line ensures consistent brake pedal feel and enhances safety for fleet vehicles operating under demanding conditions.
The kit features a robust overall length of 12 inches, with a 10mm inlet/outlet thread size compatible with most heavy-duty brake systems. It is engineered for commercial-grade applications, suitable for fleet, industrial machinery, or crossover automotive use where durability under high pressure is critical. Its design emphasizes structural integrity and high-burst-pressure ratings, making it an ideal replacement component for severe-duty brake lines.
Verified Part Numbers
- 220-11863
Expert Installation & Field Note
Proper routing of hydraulic lines is essential to prevent chassis chaffing and ensure full lock steering clearance. Always verify that lines are mounted with adequate twist to avoid internal stress and potential failure. Our shop experience specializing in heavy-duty brakes since 1985 emphasizes inspecting all mounting brackets, especially on commercial frames, to confirm proper line support and prevent movement during operation. Correct installation is vital for maintaining hydraulic integrity and vehicle safety.
Before ordering, physically inspect your existing brake hose length, flare fittings, and banjo bolt threads. Variations in wheelbase and production batches can alter line routing; ensure compatibility to avoid installation issues and ensure optimal system performance.
Features:
- Heavy-wall construction with high-burst-pressure ratings for severe-duty applications
- 12-inch overall length with 10mm threaded fittings for universal compatibility
- Designed for commercial-grade fleets, industrial machinery, and crossover automotive use
- Restores hydraulic response and prevents fluid expansion under heavy braking
- Easy drop-in replacement with durable, high-quality materials



