
Best selling Water cooling connection accessories from Watercool
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1. Watercool MO-RA3 420 Bracket for Noctua NF-A20
With the newly designed mounting bracket for Noctua NF-A20 fans, the MORA3 420 can be easily equipped with the sought-after 200mm fans. The installation is straightforward thanks to the integrated cable management and M4 threads for the fans. Both sides of the Noctua NF-A20 fans can be mounted on the MORA3 420. The bracket can be attached to the existing threads on the radiator on either the left or right side. A dual-side installation with two brackets is also possible. The material used is steel sheet, which has been coated with a robust powder finish. Sufficient fan screws of varying lengths are included in the package.
Technical specifications:
Material: Powder-coated steel sheet
External dimensions (L x W x H): 420 x 420 x 5 mm
Weight: approx. 600 g
Surface: black
Compatible: MO-RA3 420, MO-RA3 9x140 LT
Delivery includes:
1x MO-RA3 420 bracket for Noctua NF-A20 fans
1x mounting material
1x mounting tool
Additional compatibility notes for older series:
For the predecessor series to the MO-RA3 420, the MO-RA-3 9x140 PRO series, installation is only possible after modifying the radiator. The original 9x140 mm fan mounts must first be cut out. The cover is compatible with the current MO-RA3 420 series without modification.

2. Watercool MO-RA IV 400 fan frame - 200mm, black
The Watercool MO-RA IV 400 fan frame is a high-quality solution for optimizing cooling performance in PC systems. This frame allows for the installation of up to four 200mm fans on the MO-RA IV 400 radiator, ensuring effective heat dissipation. The innovative Quick-Mount system enables easy, tool-free assembly, allowing the frame to be quickly and effortlessly attached to the radiator. The frame is made from robust, powder-coated steel, which not only ensures durability but also provides an appealing look. An integrated fan splitter on the back of the frame ensures clean and tidy fan wiring, making the installation and maintenance of the cooling system easier. With this fan frame, users can significantly enhance their system's cooling performance while simplifying handling.
- Quick-Mount system for easy, tool-free assembly
- Allows for the installation of up to four 200mm fans
- Integrated fan splitter for clean wiring
- Robust, powder-coated steel for durability.

3. Watercool HEATKILLER Tube Stuts Alu100mm
If you want to individualize your HEATKILLER? Tube, you can do so with these colored replacement struts. The struts are made of solid aluminum, and the colored versions feature a high-quality anodized coating. Four struts are included in the scope of delivery, with one already prepared for an LED strip. Corresponding LED strips are available separately, so please ensure you select the correct length. You can refer directly to the designation of the HEATKILLER? Tube expansion tank. For example, a HEATKILLER? Tube 100 has 100mm long struts.
Technical data:
- Length: 100mm
- Material: Aluminum
- Color: Natural
Scope of delivery:
- 1x strut for HEATKILLER? Tube 100 prepared for lighting module
- 3x brace for HEATKILLER? Tube 100.

4. Watercool RAB MO-RA IV Stand
Watercool MO-RA IV Stand
The frame, made of solid acetal, ensures a stable base for the MO-RA IV radiators. The design has been visually adapted to the current generation of the MO-RA IV, seamlessly integrating into the overall concept. Installation is extremely simple thanks to two M4 screws.
Technical specifications:
Material: Acetal
External dimensions (L x W x H): 160 x 50 x 17 mm
Surface: Black
Compatible: MO-RA IV Series
Delivery includes:
1x Pair of MO-RA IV Stands
1x Mounting hardware.

5. Watercool HEATKILLER?? D5-Top - Stand for fan mounting (120mm fans)
With this mounting set, a HEATKILLER D5 top can be installed on a 120mm fan slot. It is also possible to mount it on a horizontally positioned radiator for 120mm fans. The freely swinging upper part of the stand is decoupled from the lower part by vibration dampers. This allows the HEATKILLER D5 top to be installed without transferring the pump's vibrations to the case. The stand is delivered without the D5 cover. The images with the installed D5 cover are provided as example pictures. Technical specifications: Dimensions (L x W x H): Material: Powder-coated steel sheet Color: black Delivery includes: 1x HEATKILLER D5 top - stand for mounting 120mm fans, mounting materials.

Watercool HEATKILLER?? D5-Top - Stand for fan mounting (120mm fans)
6. Watercool Fans Adapter for cooling system Heatkiller® Tube 140 mm
For the individualists among users of custom water cooling systems, the manufacturer Watercool has developed a modular expansion tank known as the Watercool Heatkiller Tube. The unique feature of this expansion tank is its interchangeable and expandable components, providing users with maximum freedom for customization.
With this 140mm fan adapter, a Watercool Heatkiller Tube series expansion tank can be mounted to the mounting holes of a 140mm fan. It does not matter whether the mountings are in the case or on the radiator. This allows the expansion tank to be strategically placed within the case, especially when space is limited.
Note: Please be aware that in addition to the fan adapter, the separately available Basic Mounting Bracket is required.
Technical details:
- Dimensions: 140 x 15 x 10 mm (L x W x H)
- Material: POM (Acetal)
- Color: Black
- Delivery includes: 1x Heatkiller Tube - 140mm Fan Adapter, mounting materials.

Watercool Fans Adapter for cooling system Heatkiller® Tube 140 mm
7. Watercool HEATKILLER Tube Stand (short)
For the individualists among users of custom water cooling systems, the manufacturer Watercool has developed a modular expansion tank known as the Watercool Heatkiller Tube. The unique feature of this expansion tank is its interchangeable and expandable components, giving users maximum freedom for customization.
With the help of this stand, the expansion tanks of the Watercool Heatkiller Tube series can be comfortably mounted either on the case floor or completely freestanding in both standalone and DDC versions. The same applies to the D5 version, which can only be mounted when using the optionally available decoupling set simultaneously. The stand is made of powder-coated steel in black and is extremely stable. It is ideal for a proper presentation of the most striking part of a custom water cooling system.
Technical details:
- Dimensions: 100 x 100 x 65 mm (L x W x H)
- Material: Steel (powder-coated)
- Weight: 0.18 kg
- Color: Black
- Compatibility:
- Heatkiller Tube
- Heatkiller Tube D5 (only when using the optionally available decoupling set)
- Heatkiller Tube DDC
- Scope of delivery:
- 1x Heatkiller Tube Stand (long)
- Mounting materials.

8. Watercool HEATKILLER?? Tube - 140mm Adapter FLEX
This adapter set allows HEATKILLER tube expansion tanks to be mounted on holes for 140x140mm fans. It is also possible to mount Tube 100 on 140mm holes. Even if only certain mounting holes are accessible due to the installation situation of the radiator, more flexible mounting can be achieved in this way. Please note that the basic mounting bracket of the HEATKILLER Tube series is required and is available separately.
Technical data:
Material: steel, powder-coated
Colour: black
Scope of delivery: 2x HEATKILLER Tube - 140mm adapter FLEX mounting material.

9. Watercool O-ring set for HK Rev 3.0
Replacement seals for the 3.0 version of the Watercool. Recommended after modifications, repairs to the interior of the cooler, or leaks due to improper handling of the old seal. Both different sizes of seals are required to completely rebuild the cooler. Delivery includes: 2x seals.

Watercool O-ring set for HK Rev 3.0
10. Watercool Spacer steel galvanized M4x45mm (1 piece)
The M4x45mm spacer made of galvanized steel from Watercool is an essential accessory for water cooling systems, particularly for radiators. With a wrench size of 8 mm, this spacer provides a reliable and stable connection that is crucial for the optimal functionality of water cooling components. The galvanized steel material ensures high corrosion resistance and durability, making it an ideal choice for use in demanding environments. The spacer is available as a single piece and comes with a protective film to prevent damage during transport. This product is a practical solution for anyone looking to make their water cooling systems efficient and reliable.
- Made from galvanized steel for increased corrosion resistance
- Suitable for various radiators in water cooling systems
- Includes protective film for transport protection
- G3/8" internal thread for easy installation.

Watercool Spacer steel galvanized M4x45mm (1 piece)