How does coolant travel from the Gen 5 oil/coolant module to the EGR cooler?

Coolant travels from the Gen 5 oil/coolant module to the EGR cooler via an internal crossover passage in the cylinder head. This design utilizes internal passages to enhance the flow of coolant directly without needing additional external components. By routing the coolant internally, it minimizes the risk of leaks and reduces the complexity of the system, allowing for efficient thermal management within the engine.

Internal passages are designed to facilitate better heat transfer and improved circulation of the coolant, which is critical for maintaining optimal engine temperatures and ensuring that the EGR cooler operates effectively. This method supports the performance of the engine by ensuring that the coolant efficiently reaches its intended destination, helping to protect the engine from overheating and supporting overall efficiency.