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Square black plastic case fan with central rotor and mounting holes

Fans

Fans BN31-00022A KDB04105HB-B802 case fan

SKU CH-8R0S-PMYQT

Cooling fan BN31-00022A KDB04105HB-B802 for case airflow

  • Direct replacement for BN31-00022A part number
  • Matches KDB04105HB-B802 model specifications
  • New condition ensures reliable cooling performance
  • OEM-compatible case fan for system maintenance

Replacement fan for KDB04105HB-B802

This replacement fan fits the KDB04105HB-B802 assembly and carries the BN31-00022A reference. It is intended for system builders or repair technicians who need a direct swap to restore original airflow. The part arrives new and ready for installation.

Upgrade from a failed or noisy original unit

Replace the stock cooler when bearings wear out or noise rises above acceptable levels. The jump is worth it once the original fan no longer spins reliably or produces audible rattling. No other compatibility is implied beyond the stated model numbers.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $18.99
Typical for this category: the median of 8,339 items is $19.99.

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Specifications

No published specifications for this item yet.

Questions about this item

What mounting dimensions does the BN31-00022A use for installation?

The BN31-00022A is designed as a direct replacement for the KDB04105HB-B802, matching its original mounting points and form factor for compatible chassis.

Which step is often missed when fitting the KDB04105HB-B802 replacement?

Ensure the fan connector aligns correctly with the motherboard header before securing the unit, as reversing the plug prevents the BN31-00022A from receiving power.

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