Description
The Mercedes-Benz A1665001688 Transmission Oil Cooler Line is an original-equipment component designed for the automatic transmission cooling system of selected Mercedes-Benz vehicles.
This part is identified as a transmission oil cooler line / gearbox oil cooler pipe and is associated with selected Mercedes-Benz ML-Class and GLE-Class W166 diesel applications.
The cooler line provides a controlled route for transmission fluid within the cooling circuit, helping maintain appropriate transmission-fluid temperatures during vehicle operation.
A1665001688 has documented applications including ML/GLE 250 CDI, ML/GLE 250 BlueTEC and 4MATIC diesel variants.
This part is an ideal replacement when the original transmission cooler line is damaged, leaking, corroded, or requires replacement during transmission or cooling-system repairs.
Important: Transmission cooler lines are vehicle- and engine-specific. Always verify the 17-digit VIN, engine code, transmission type, and existing part number before ordering.
Compatibles with
Mercedes-Benz ML 250 CDI 4MATIC – W166
- Mercedes-Benz ML 250 BlueTEC 4MATIC – W166
- Mercedes-Benz GLE 250 BlueTEC – W166
- Mercedes-Benz GLE 250 d – W166
- Mercedes-Benz GLE 250 BlueTEC 4MATIC – W166
Parts catalog information specifically lists A1665001688 for ML/GLE 250 BlueTEC/d, ML/GLE 250 BlueTEC/d 4MATIC, and ML/GLE 250 CDI/d 4MATIC applications.
Other listings associate the part with M651 diesel applications and the W166 GLE platform.
Please verify the 17-digit VIN and compare the original cooler line before purchase.
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