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Bose 40394 QuietComfort 3 Ear Cushion Kit
Bose 40394 QuietComfort 3 Ear Cushion Kit
Bose 40394 QuietComfort 3 Ear Cushion Kit
Bose 40394 QuietComfort 3 Ear Cushion Kit
Bose

Bose 40394 QuietComfort 3 Ear Cushion Kit

★★★★★4.7 (857 reviews)

Official Bose replacement ear cushions restore the comfort and noise isolation of your QuietComfort 3 headphones.

$35.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Bose QuietComfort 3 Ear Cushion Kit (model 40394) is an official replacement accessory designed to restore worn-out ear pads on QC3 headphones. Over time, the ear cushions on any headphone flatten, crack, or lose their shape, which directly impacts both comfort and the acoustic seal that Bose's noise cancellation technology relies on. This kit provides a fresh pair of cushions manufactured to Bose's original specifications, ensuring the fit, feel, and sound performance match what the headphones delivered when new.

Installation is straightforward thanks to the snap-in attachment design—no adhesive, tools, or technical expertise required. Users simply peel away the old cushions and press the new ones into place on each ear cup. Once installed, the cushions restore the snug, comfortable seal around the ear that is critical for the QC3's passive noise isolation and active noise cancellation to function at full effectiveness. For QC3 owners looking to extend the life of their headphones rather than invest in a newer model, this cushion kit offers a practical and cost-effective refresh.

Key Features

Compatible with QuietComfort 3 Acoustic Noise Cancelling headphones.

Specifications

Brand
Bose
Model
40394
Compatibility
QuietComfort 3 (QC3) headphones
Installation
Snap-in
Kit Contents
Pair of replacement ear cushions

Pros & Cons

👍 Pros

  • Genuine Bose part ensures exact fit and acoustic compatibility with QC3 headphones.
  • Snap-in installation requires no tools and takes only seconds to complete.
  • Restores the noise isolation seal that degrades as original cushions wear out.
  • Extends the usable lifespan of QC3 headphones rather than requiring a full replacement.
  • Refreshes comfort for extended listening sessions with new cushion padding.

👎 Cons

  • Only compatible with the QuietComfort 3 model, not with newer Bose headphone lines.
  • Does not address other age-related issues like headband wear or battery degradation on older QC3 units.
  • Premium pricing compared to third-party cushion alternatives available for the QC3.
  • Cushion material will eventually wear again with regular use and need future replacement.

Frequently Asked Questions

No, this cushion kit (model 40394) is designed specifically for the Bose QuietComfort 3 headphones and is not compatible with other models like the QC25, QC35, or QC45.
The cushions use a snap-in design—simply remove the old worn cushions by gently pulling them off, then press the new cushions into place until they snap securely onto the headphone housing.
The kit includes a pair of ear cushions, one for each ear cup of the QuietComfort 3 headphones.
Yes, worn or flattened cushions can degrade the acoustic seal needed for effective noise isolation. Installing fresh cushions restores the proper seal and improves noise cancellation performance.
These are genuine Bose ear cushions sold under Bose's own brand and model number (40394), ensuring proper fit and acoustic performance.

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