---
title: "EK-Pro CPU WB 4189 Rack – enterprise"
description: "High-performance 1U-compatible water block for LGA 4189 Intel processors with four G1/8\" threaded side ports for low-profile server rack applications."
url: "https://www.lmtek.com/components/cpu-water-blocks/ek-pro-cpu-wb-4189-rack-ni-acetal"
locale: "en"
---

# EK-Pro CPU WB 4189 Rack

_enterprise_

High-performance 1U-compatible water block for LGA 4189 Intel processors with four G1/8" threaded side ports for low-profile server rack applications.

SKU: EK-Pro CPU WB 4189 Rack

## Specifications

| Spec | Value |
| --- | --- |
| Compatibility | LGA 4189 |
| Platform | Intel |
| EAN | 3831109844700 |

## Technical datasheet

| Spec | Value |
| --- | --- |
| Dimensions (L x H x W) | 113 x 78 x 22.2 mm |
| Materials | Nickel-plated copper, stainless steel, POM |
| Mass | 0.481 kg |
| Ports | 4 x G1/8" |
| Mounting method | T30 Torx |
| Working pressure | 2500 Pa |
| Maximal working pressure | 30000 Pa in loops containing an EK-Pro Pump Reservoir Manifold, otherwise 75000 Pa |
| Operating temperature range | 5 – 60 °C |

## 1U Server Cooling for Intel LGA 4189

The EK-Pro CPU WB 4189 Rack Ni + Acetal is a high-performance water block designed for LGA 4189 Intel processors, optimized for 1U chassis compatibility. It features four G1/8" threaded side ports for low-profile usage and boasts top thermal performance.

The block's copper base is nickel electroplated, while its top is CNC machined from durable black POM Acetal. The hold-down bracket is laser-cut stainless steel, ensuring reliable installation and long-term structural integrity in rack-mounted server systems.

### 1U Low-Profile Design

Side-mounted G1/8" ports allow full coolant loop connectivity within the height constraints of 1U rack chassis running Intel LGA 4189 processors.

### Laser-Cut Stainless Steel Bracket

T30 Torx fasteners and a laser-cut stainless steel hold-down bracket deliver uniform clamping force and long-term stability in rack-mount server systems.

### Nickel-Plated Copper + POM Acetal

Electroplated copper base and CNC-machined black POM Acetal top provide corrosion resistance and chemical compatibility with standard liquid-cooling coolants.

## Technical drawing

[Top & side view, in millimetres](https://cdn.sanity.io/images/5gtqpiph/production/3df1d43552643fea967ea5f035487e78aacabc0d-1600x1067.png)

## Download resources

Product documentation for specification, integration, and installation is available below. Revision numbers are printed on page one of each file.

- [Installation manual](https://cdn.sanity.io/files/5gtqpiph/production/826ff47d89c3dae1e9f92e533ebab932941a3efd.pdf) · Rev 1.0 · Torque sequence, TIM application maps, and the leak-test protocol. Read before first fitting.

A CAD STEP file of the full block assembly is available to partners on request – contact LM TEK engineering before specifying at fleet scale.

## Socket Compatibility

Compatible exclusively with LGA 4189 Intel processors. Optimized for 1U rack server chassis where side-mounted, low-profile port access is required.

## In the box

- 1× EK-Pro CPU WB 4189 Rack Ni + Acetal water block
- 2x EK plug G 1/8”
- EK-Loop Multi Allen Key (6mm, 8mm, 9mm)
- 1x Torx T30 Key – 1x 5mm Allen Key
- Thermal grease (1g)