This coolant hose with OE code 1669971459 is suitable for Mercedes-Benz ML350, GL450, ML550 (2012–2013 models) with W166 chassis, compatible with 3.5L naturally aspirated gasoline engine and 3.0L Bluetec turbocharged diesel engine, responsible for the circulation and guidance of engine coolant.
Made of EPDM rubber resistant to ethylene glycol coolant corrosion, this hose withstands the continuous vibration impact of off-road conditions. The thickened pipe wall enhances the anti-burst performance, eliminating pipeline vibration fatigue cracking and coolant leakage. It replicates the original pipeline direction and interface size, no cutting or modification is required for in-situ installation, the sealing contact surface is flat, and interface seepage is completely avoided.
This part has passed double quality inspections of thermal cycle and water pressure burst, suitable for urban commuting, long-distance off-road, and mountain bumpy road conditions. It solves the hidden dangers of high water temperature, cooling system loss, and engine overheating caused by pipeline leakage of Mercedes-Benz ML models, reducing the probability of water tank and engine overhaul. Its durability is comparable to original parts, and it completes the routine maintenance of the cooling system of Mercedes-Benz mid-size SUVs at an affordable price.