Sennheiser · Official replacement (OEM)
Earpad for HD 450BT (1 Pair)
Verified as compatible with 1 headphone model.
Verified compatible headphones
Evidence
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assets.sennheiser.com
The HD 450BT manual includes instructions for removing and replacing the ear pads.
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us.sennheiser-hearing.com
Sennheiser’s official page identifies genuine OEM earpads, article number 508946, and explicitly lists HD 450BT as compatible.