Heating and Cooling› Overflow Tanks and Catch Cans

Genuine

Expansion Reservoir

$35.99

SKU: 166500004964

In Stock
In Stock
Ships by Aug 2
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Genuine 166500004964 is a coolant expansion reservoir manufactured by Mercedes-Benz. It replaces the original part number 1665000049. This expansion reservoir is constructed from aluminum and is intended for use in various Mercedes-Benz models from 2009 to 2019. Specific fitments include models such as GLE400, GLS450, GLS550, GLE350, GL550, ML400, ML350, and GL450, across different trims and engine types. Always verify fitment with your specific vehicle's details before purchase. The product comes with a minimum 12-month manufacturer warranty, and Calstar Mercedes Parts guarantees fitment for the correct parts.

MIA's Description

The Genuine 166500004964 is an expansion reservoir designed for Mercedes-Benz vehicles. This part is listed as "Coolant" in its description and replaces part number 1665000049. It is a new item with a manufacturer warranty of at least 12 months.

Fitment

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Specifications

BrandGenuine
Part Number166500004964
CategoryHeating and Cooling

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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