Genuine 121 429 01 34 Brake Hydraulic Line Union M10 Hexagon Spacer

The Genuine Mercedes-Benz 121 429 01 34 Brake Hydraulic Line Union is a precision-engineered OEM component designed to connect brake hydraulic lines in Mercedes-Benz braking systems. Also known as a hexagon spacer element or brake line coupling, this essential fitting ensures reliable hydraulic fluid transfer between brake line sections.

Key Features:

• M10 thread size for secure connection
• Hexagonal design for easy installation and removal
• Functions as an adapter between hydraulic unit lines and rear axle brake lines
• Genuine Mercedes-Benz OEM quality ensures proper fit and long-lasting performance
• Used in systems without acceleration skid control (ASR)
• Compatible with a wide range of Mercedes-Benz models from 1954-2026

This genuine factory union maintains the integrity of your brake hydraulic system by providing a leak-free connection point. Engineered to Mercedes-Benz exacting specifications, this part ensures your braking system operates safely and reliably. When servicing or repairing brake lines, always use genuine Mercedes-Benz components to maintain original equipment performance standards.