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Corsair Hydro X Series iCUE XH303i RGB Custom Cooling Kit

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The Corsair Hydro X Series iCUE XH303i RGB Custom Cooling Kit contains all the essentials you need to build your own compact custom cooling loop. It features a XC7 RGB CPU water block, XD3 RGB pump/reservoir combo, 3 x Corsair SP120 RGB PRO PWM fans, iCUE Commander PRO Smart RGB lighting and fan speed controller, XR5 360mm radiator, XL5 performance coolant, and additional tools that will assist with tubing.


XC7 RGB CPU Water Block

The XC7 RGB CPU Water Block combines premium nickel-plated copper construction and extreme cooling performance, compatible with Intel® LGA 1200 and AMD AM4 sockets.

XD3 RGB Pump/Reservoir Combo

The XD3 RGB Pump/Reservoir Combo features a high-performance DDC PWM pump, integrated RGB lighting, and in-loop temperature sensor to drive even the most compact custom cooling systems.

Three Corsair SP120 RGB PRO PWM Fans

Eight RGB LEDs per fan create vibrant lighting and visual effects to go along with powerful cooling.

Intelligently Controlled, Low-Noise Custom Cooling

Push your system further with superior cooling performance coupled with remarkably quiet operation, intelligently controlled with an included iCUE Commander PRO Smart RGB Lighting and Fan Speed Controller and in-loop temperature sensor.

XR5 360mm Radiator

Delivers extreme custom cooling performance, with a 30mm radiator thickness and premium copper core.

The tools you need

An included Hacksaw, Tube Reamer, Silicone Rod, Tube Bending Mandrel and Sawing Clamp make it easy to cut, bend, and finish the tubing for those clean perfect tubing runs.

XT Hardline Tubing

Create stunning loops with crystal-clear PMMA tubing, easily cut and bent to your needs using the included saw and silicone insert and installed with the included black XF Hardline Fittings and Adapters.

XL5 Performance Coolant

Includes one liter of clear XL5 Performance Coolant to keep your loop running clean and cool, pre-mixed with anti-corrosion and anti-bacterial inhibitors.

Your setup at your command

Corsair iCUE software enables complete control over your custom cooling loop. Create automated fan curves that adjust fan speeds based on your system’s thermals, and customize dynamic RGB lighting effects for the XC7 RGB CPU Water Block, XD3 RGB Pump/Reservoir Combo, and SP120 PRO RGB fans.


Product Type Custom Cooling Kit
Warranty 2 year
Port Thread G1/4'' BSPP
Thermal Paste Pre-applied thermal paste
Cold Plate Material Copper
Fluid Chamber Material Nylon
Pump Type Xylem DDC 3.2 PWM9
Operating Temperature 60°C coolant temperature
Color Black
Lighting RGB
Compatibility - Material Only mix with other copper / brass products
Radiator Dimensions 396mm x 120mm x 30mm
Radiator Thickness 30mm
Fan Quantity 3
CPU Socket Compatibility Intel 1200
Intel 115x
Box Contents XC7 RGB (115X/AM4)
XR5 360
XD5 Pump/Reservoir Combo
3m XT Hardline 10/14mm
8 x Hardline 14mm fittings (BLACK)
2 x 90° Rotary Adapters (BLACK)
250 ML Filling Bottle
XT Hardline Bending Kit
3 x QL 120 RGB Fans
Backed by a 2 year Corsair warranty.

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