This radiator hose assembly carrying OEM number A1669971559 is fully compatible with Mercedes-Benz GL-Class X166 (2013–2016) and GLE-Class W166 facelift models (2016–2018), covering gasoline and diesel variants GL350, GL450, GL550, GLE300d and GLE350, responsible for liquid circulation of the main radiator cooling system.
Manufactured with thickened high-temperature resistant rubber layers and precision injection molded connecting ends, this pipe withstands continuous thermal cycling and engine vibration without hardening, swelling or coolant seepage. All interface dimensions, clip mounting positions and pipe curvature strictly follow original factory blueprints, realizing plug-and-play fit without trimming or modification during maintenance replacement.
The component passes high-pressure pulse leakage testing and 1000-hour thermal aging certification, adapting to daily family commuting, cross-country off-road and high-load towing scenarios. It thoroughly fixes common failures such as coolant leakage, unstable engine temperature and radiator system pressure warning lights induced by aging original radiator pipes, offering cost-effective OE-level cooling system repair for mid-size and full-size Mercedes luxury SUVs.