Compatible Engines
3.9 Liter Engines
4B3.9
B3.9 G
ISB3.9 CM2220 B107
QSB3.9 30 CM550
QSB3.9 CM2880 B138
5.9 Liter Engines
6B5.9
B5.9 CM2670 B166C
B5.9 G
B5.9 GAS PLUS CM556
ISB5.9 CM2880 B127
ISB5.9G CM2180
QSB5.9 30 CM550
QSB5.9 CM2880 B139
QSB5.9 CM550
6.7 Liter Engines
B6.7S
G5.9
G5.9 CM558
This gasket is engineered to provide a reliable seal for the specified engine models, ensuring that the thermostat housing functions correctly and the engine maintains its optimal operating temperature.