The engine breather hose, also known as the crankcase ventilation hose, is a critical component located on the right side of the engine in Land Rover LR4 models from 2010 to 2013. Its primary function is to facilitate the circulation of blow-by gases from the crankcase back into the intake manifold, improving engine efficiency and emissions control. Over time, this hose may become worn, cracked, or disconnected, leading to increased oil consumption, poor engine performance, or abnormal engine noise. If you notice any oil leaks or a decrease in engine efficiency, it may be time to replace this part. OEM part number LR010757 is a direct fit for your Land Rover, ensuring genuine quality and functionality.