543.03.0004 Expansion Tank Compatible with Volvo and Renault Trucks

What does an expansion tank do?

This radiator expansion tank plays a critical role in the thermal management of heavy-duty engines by managing coolant pressure and volume changes. By maintaining stable pressure within the cooling system, it prevents overheating and protects engine components from thermal stress during intensive operation.

Vehicle and engine compatibility

The component is engineered to fit a wide range of heavy commercial vehicles. It is compatible with Volvo series such as FH (FH4/FH5), FM, FMX, VNL, VHD, and B11R/B13R models. Additionally, it serves Renault Trucks applications including the C, K, Magnum, Premium, and T models. This ensures precise fitment for diverse fleet requirements.

Installation and maintenance

For optimal performance, technicians should inspect the tank for any signs of pressure loss or structural fatigue. When replacing the unit, ensure all connection points are clean and secure to maintain the integrity of the cooling circuit. Proper installation is vital to prevent air pockets in the engine block.

System reliability

This part is an OE-equivalent solution designed to meet the rigorous demands of heavy-duty transport and construction machinery environments. Consult your authorized distributor.

OE cross-reference

543.03.0004 (Radiator Expansion Tank) is the equivalent of the Renault Trucks and Volvo OE numbers. This part directly replaces Renault Trucks OE numbers 7421360161, 7421883431, 7422430044, 7422821832, 7423752085. It also replaces Volvo OE numbers 21360161, 21883433, 22430043, 22821826.