Volvo Penta AQ 131 151 171 230 250 B230 4 Cylinder Engine Coolant Tank Reservoir Heat Exchanger Core 856135 855406. In good condition. No cracks in core. This was pressure tested and passed. Good replacement unit.
This is from AQ151 and has a 7 layer heat exchanger element or core. This is fully compatible with the 131, 151, 230, 250. No stripped threads or heli coils.