Maintain stable cooling performance on large Mercedes luxury SUVs with this OEM cooling hose, part reference 1645004375. Fits 2006–2011 W164 ML-Class and X164 GL-Class, including GL350 Bluetec 3.0L V6 diesel, GL450 4.7L NA V8 and GL550 5.5L V8 gasoline 4-Matic all-wheel drive trims.
Dual braided reinforced EPDM rubber endures extreme temperature swings from large-displacement V8 and turbo diesel engines, resisting swelling, cracking and coolant permeation. Precisely replicated hose length and mounting curves ensure leak-free assembly for highway and off-road driving. Ruptured stock hoses cause rapid coolant depletion and warped cylinder heads. This replacement restores full cooling circuit integrity, stabilizes engine temperature under heavy towing loads and extends the lifespan of Mercedes V6 diesel/V8 gasoline powertrains.