6.7 LITER. M6x77.0mm. PartQualifier: M6x77.0mm. Water manifold bolt. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Cooling System Crossover Line to a mounting point. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Spare Tire Housing Cover to it's mounting point. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Water Pump Housing to it's mounting point. Engine Coolant Bypass Pipe Bolt. Engine Coolant Thermostat Housing Bolt. Coolant Bypass Pipe. Coolant Thermostat Housing. Cooling System Crossover Line. Spare Tire Compartment Cover. Water Pump Housing. Included with: Water manifold.