Yamaha #90386-10M16 Replacement Bushing

PETG replacement hinge swivel for Sony WH-1000XM4 headphones — fits left or right side

Part Details

• Part Name: Headband Hinge Swivel Assembly
• Fits: Sony WH-1000XM4 — left or right side
• Material: PETG (stronger than OEM plastic)
• Color: Black
• Quantity: 1 hinge (specify left or right in order notes)
• Hardware required: Original metal retainer clip from your broken hinge

Why This Hinge Breaks

• The plastic swivel hinge is the pivot point that connects each ear cup to the headband, allowing the headphones to fold flat for storage. This is one of the most common failure points on the WH-1000XM4 — the plastic fatigues over time from repeated folding and occasional over-extension, until it cracks or snaps completely. Sony does not sell this small hinge as a standalone part. The only official fix is sending the headphones in for service, which can cost $80+ or result in a replacement unit. This printed PETG hinge restores full function and fold-ability for a fraction of that cost.

Compatible Models

• Sony WH-1000XM4 (all variants)
• Does NOT fit
• the WH-1000XM3 or WH-1000XM5 — those models use different hinge designs. Message us if you need a different version.
• Cross-Reference OEM Part Numbers
• Sony WH-1000XM4 headband hinge swivel (no published standalone OEM part number)
• Sony and WH-1000XM4 are trademarks of Sony Corporation. These names are used solely for compatibility reference. PartsFindr is not affiliated with, endorsed by, or sponsored by Sony Corporation.