Bykski D5 Liquid Cooling 12V Pump - PWM Enabled - Silver Mount (B-PMS5-NX-NA)
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Bykski D5 Liquid Cooling 12V Pump - PWM Enabled - Silver Mount (B-PMS5-NX-NA)
Sold Out

Bykski D5 Liquid Cooling 12V Pump - PWM Enabled - Silver Mount (B-PMS5-NX-NA)

The Bykski D5 Liquid Cooling 12V Pump Motor is a high reliability, high pressure industrial pump, featuring PWM speed control. Like most other D5 pumps this reliability is afforded by the...

The Bykski D5 Liquid Cooling 12V Pump Motor is a high reliability, high pressure industrial pump, featuring PWM speed control. Like most other D5 pumps this reliability is afforded by the same unique design as the original pump, which contains only one moving part: the magnetically driven spherical impeller spins on a single ceramic bearing, thus extending the life of this pump beyond existing standards.

 The pumps data and speed control is done using the PWM 4-pin connector.  By connecting this the pump speed can be controlled via the computers similar to a CPU fan speed.  This also allows the safety feature of auto shut down based on RPM feedback if available in your BIOS.

  • Sleeved Black/Black Cables
  • Superior 12 Volts DC convenience: plugs into the computer power supply
  • The high pressure capability of the D5 is particularly well adapted to high-flow systems
  • No maintenance when used with de-mineralized water, and anti-fungal additives
  • Power:12V / TDP18W
  • Voltage:10V-15V
  • Power Connector:4-Pin Molex
  • Speed Control/Data:4-Pin PWM
  • Working Temp:45C at 4000RPM
  • Max RPM:4800
  • Maximum head:12.4 ft (3.8 m)
  • Maximum discharge:~ 290.5 GPH (1100 LPH)
  • Performance will vary based on housing used
  • Top Material:Clear
  • Thread:G1/4
  • Stand Color:Silver
  • Loop:Aluminum or Non-Aluminum
Included Parts
  • 1x Bykski D5 Liquid Cooling 12V Pump - PWM Enabled 
  • 1x Silver Mounting System
Use of caustic and/or abrasive coolant will void your warranty (see warranty section) and may cause your pump to fail.
This pump comes stock WITHOUT any housing allowing you to integrate any of your favorite pump tops and pump accessories. Due to this the pump cannot be used as a standalone unit.
Do not run the pump dry. The D5 and DDC range of pumps are designed as self lubricating. This means the fluid that the pump is designed to push/create flow is also used to lubricate the internal pump parts. This design means you shouldn’t run the pumps without fluid for any reason. Running these pumps without fluid creates internal friction between the ceramic bearing and bearing housing and that heat can crack or melt the bearing housing very quickly. It is very easy to see if your pump was “run dry” or without fluid.
1.Visual scratches along inside of housing. This is created when the bearing housing is melted and impeller spins off center.
2.Bearing housing has stress cracks or is melted. This is from heat which is created when pump is run dry.
3.Impeller sits too low in housing. This is usually a sign that number 2 has occurred and the ceramic bearing is falling through the normal housing location.
Running D5 pumps dry (without fluid) immediately voids the warranty. Replacements will not be given under these conditions. Images below show an undamaged impeller with no deformations. is not responsible for any hardware damage. Use at your own risk.

Return Policy:
Products returned for credit must be received within 20 days of invoice date and a 20% restocking fee will apply. If 20 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

All returned items must be in like new condition with all related parts including screws, manuals, etc. If you have lost, thrown away, scratched or opened sealed boxes or bags – a higher restock fee may apply upwards of 50%. Products that have had fluid ran through them are subject to these higher restock fees.

If a customer is misleading about the defect and evidence of incorrect install/use or tampering has occurred, the return my denied and a higher restock fee may be assessed or the return may be completely denied. A qualified technician will test each returned product for defects. will not assess a restocking fee for defective products.

Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.

Returns will not be accepted without an RMA number provided from

Shipping Policy:
Return Shipping
Customers are responsible for ALL return shipping charges on merchandise for any reason. Unless otherwise noted, shipping on products and returns is non-refundable, and returning a product comes at the expense of the customer. Customer will be responsible for paying shipping products/orders back to

Please ship using a carrier that provides a tracking number, insurance and proof of delivery. is not responsible for return items lost by the carrier. Valid proof of delivery must include the receipt signature of an authorized employee.

Erroneous Shipments
In the event an incorrect item is shipped in your order, the correct item / replacement will be shipped using the same method as the original order.

Damaged Items: All packages are fully insured at no additional charge.

If you receive a damaged package, you must notify us within 48 hours of receipt. Sending back damaged merchandise voids the shipping insurance and no credit will be given. Damaged packages must be held for five days with original packaging for carrier inspection.

Shipment Refusal
If a shipped order is refused or returned undelivered there will be a mandatory 20% restocking fee, a $10.00 Service Fee and no refund on the shipping cost.


Any and all orders over $100.00USD that are cancelled will have a 10% restock fee assessed, unless an in-store credit is issued for future purchases, then the restock fee is waived.

Orders that are changed after placing are subject to a 24 hour HOLD and will be not shipped until customer is notified that the changes are complete.

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