
Internal brake line degradation, environmental exposure, and age-related wear can cause internal hose softening, cracking, and volumetric expansion, leading to pressure loss, uneven caliper response, and potential fluid leaks. Replacing worn hydraulic lines with this premium OE-style caliper assembly restores immediate hydraulic response and eliminates internal line collapse risks, ensuring safer and more consistent braking under heavy-duty fleet conditions.
Designed for severe-duty commercial applications, this caliper features high-burst-pressure ratings and heavy-wall construction to withstand demanding operational environments. Its direct bolt-on fitment simplifies installation, requiring no modifications. The caliper assembly includes new seals, guide pins, dust boots, bleeder screws, and stainless-steel hardware clips, all assembled using premium lubricants for optimal performance and durability. Every unit is 100% pressure tested and inspected to ensure high-quality, reliable braking performance that meets or exceeds OEM standards.
- Overall Length: 11.4-inch
- Fitting / Outlet Size: 10mm INV thread
- Application: Commercial-Grade / Heavy-Duty Fleet / Passenger Automotive Cross-Over
Part Numbers
- L4917
Expert Installation & Field Note
For optimal performance, route the hydraulic line to avoid chassis chaffing and ensure sufficient twist clearance during full-lock steering. Verify the mounting bracket positions on heavy commercial frames to prevent line stress and chafing. Proper routing and secure mounting are essential for maintaining hydraulic integrity and extending component lifespan, especially in demanding fleet environments.
Before ordering, physically inspect your existing hydraulic line length, banjo, or flare fitting threads. Variations in wheelbase and production runs can alter line routing on fleet and utility vehicles. Accurate measurement ensures correct replacement and prevents costly installation issues.
Features:
- New seals, guide pins, dust boots, bleeder screws, stainless steel hardware, and mounting brackets for complete assembly
- Premium lubricant used to ensure smooth operation and durability in harsh conditions
- 100% pressure tested and inspected for reliable brake performance
- Bolt-on ready with no modifications required
- High-temperature EPDM rubber dust boots for enhanced heat resistance



