Description
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The part number A2465010325 (formatted A 246 501 03 25) is listed in Mercedes parts catalogues as a “Bleed Line” or “Vent Line” for the radiator/expansion tank system. mbparts.mbusa.com+2PartSouq+2
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A parts listing describes it explicitly: “VENT LINE, RADIATOR – GLA(X156)” with this number. PartSouq
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One supplier notes the weight of this part as approximately 0.3 kg. PartSouq
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Another catalogue (LLLParts) lists the weight at around 0.05 kg for the same part number. lllparts.co.uk
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Function: This line connects between the radiator/overflow/compensating tank and vents or bleed points in the cooling system; it allows air/steam to escape and ensures proper coolant circulation and system bleeding.
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Fitment: Used in models such as the A-Class, B-Class, CLA, GLA (chassis codes W176, W246, C117, X156) per fitment tables listed. lllparts.co.uk+1
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Because it is a hose/line rather than a heavy mechanical part, correctness in length, routing and clamp connections is important to avoid coolant loss or air ingress.
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