
Internal hose degradation and environmental exposure often lead to pressure loss, uneven caliper response, and fluid leaks in fleet brake systems. Over time, rubber lines can dry out, crack, or swell, causing volumetric expansion during heavy braking and reducing hydraulic efficiency. Upgrading to a premium replacement hydraulic line or caliper assembly restores immediate response, eliminates internal line collapse risks, and ensures safe, consistent braking performance under demanding conditions.
This caliper assembly features heavy-duty construction with high-burst pressure ratings suitable for severe-duty commercial fleet applications. It is designed for direct drop-in replacement, providing a reliable upgrade that maintains fleet safety standards and reduces downtime. The zinc coating enhances corrosion resistance, extending component lifespan in harsh environments typical of industrial transport and utility operations.
The caliper’s robust build ensures it withstands extreme operational stresses, with features such as precision-machined piston bores and corrosion-resistant finishes. Proper installation and routine inspection of mounting brackets and hardware are essential to maintain optimal brake system performance and prevent caliper misalignment or premature wear. Our shop experience specializing in heavy-duty brakes since 1985 confirms the importance of correct torque procedures and brake fluid management during replacement.
Specifications
- Overall Length: 0.2108 inches
- Fitting / Outlet Size: 10mm INV thread
- Application: Commercial-Grade / Heavy-Duty Fleet / Passenger Automotive Cross-Over
Part Numbers
- 331-67656
Expert Installation & Field Note
Ensure to route brake lines away from chassis chaffing points and moving suspension components. Check for proper twist clearance during full-lock steering cycles and verify line mounting brackets on heavy commercial frames to prevent stress and abrasion. Correct line routing and secure mounting are critical for consistent hydraulic pressure and long service life of the caliper assembly.
Before ordering, physically inspect your existing line length, banjos, or flare fitting threads. Variations in wheelbase and mid-year production changes can alter routing and mounting points on fleet and utility vehicles. Confirm all dimensions and connection types to ensure a proper fit and avoid installation delays.
Features:
- Heavy-duty zinc-coated construction for corrosion resistance
- High-burst pressure rated for severe-duty applications
- Drop-in replacement with OEM fit and function
- Precision-machined piston bores for reliable operation
- Designed for fleet and industrial use with proven durability



