0103 122 Volvo Exhaust Pressure Regulator Cylinder

What does an exhaust pressure regulator cylinder do?

This exhaust pressure regulator cylinder plays a critical role in the engine brake system of heavy commercial vehicles. It facilitates the precise movement of the exhaust brake valve, ensuring timely and reliable engagement during deceleration. By maintaining stable pressure, it supports the overall braking efficiency of the engine's exhaust manifold system.

Compatible Volvo engines and models

This component is specifically designed for several Volvo models including the F10, F12, F7, N10, N12, B10M, and B12. It provides a precise fit for engines such as the TD70, TD71, TD100, TD101, TD120, TD121, and TD122 series. Using correct sizing and material selection ensures it functions effectively within the vehicle's pneumatic architecture.

Installation and maintenance guidance

For workshop technicians performing maintenance, it is vital to verify that the cylinder matches the specific engine and exhaust brake system type. Key factors include matching the cylinder size to the engine code and ensuring the arm geometry and connection port position align with the original equipment specifications to prevent pneumatic leaks.

Troubleshooting and selection

Regular inspection of the regulator can help prevent unexpected braking performance issues. Always ensure that all connections are tightened to specification to maintain the integrity of the exhaust system. Consult your authorized distributor.

OE cross-reference

0103 122 (Exhaust Pressure Regulator Cylinder) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 478915.