Amazon.com: EMIAOTO Pipe Battery Plus Positive Battery Lead 6938504 6938501 for BMW E90 3er E91 E92 : Automotive
Battery Help, what's the purpose of this grey hose? Need to change the battery but the only one locally available in this size has no port for this hose to be attached.
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Amazon.com: Replacement Key Battery VL2020 Fit for BMW 1 3 5 6 7 Series E90 E92 E93 Entry Keyless Remote Smart Remote Contril Key Fob : Electronics