---
product_id: 246583662
title: "Geekworm 11mm Thickness Embedded Heatsink (P165-B) for Raspberry Pi 4, Armor Aluminum Radiator Compatible with Raspberry Pi 4 Model B Computer and Pi 4 Expansion Board Support POE Extension"
brand: "geekworm"
price: "4.73 OMR"
currency: OMR
in_stock: true
reviews_count: 10
category: "Geekworm"
url: https://www.desertcart.com.om/products/246583662-geekworm-11mm-thickness-embedded-heatsink-p165-b-for-raspberry-pi
store_origin: OM
region: Oman
---

# 11mm embedded thickness Supports 30mm fan for max cooling Raspberry Pi 4 Model B compatible Geekworm 11mm Thickness Embedded Heatsink (P165-B) for Raspberry Pi 4, Armor Aluminum Radiator Compatible with Raspberry Pi 4 Model B Computer and Pi 4 Expansion Board Support POE Extension

**Brand:** geekworm
**Price:** 4.73 OMR
**Availability:** ✅ In Stock

## Summary

> ❄️ Keep your Pi cool, your projects hotter — never miss a beat!

## Quick Answers

- **What is this?** Geekworm 11mm Thickness Embedded Heatsink (P165-B) for Raspberry Pi 4, Armor Aluminum Radiator Compatible with Raspberry Pi 4 Model B Computer and Pi 4 Expansion Board Support POE Extension by geekworm
- **How much does it cost?** 4.73 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/246583662-geekworm-11mm-thickness-embedded-heatsink-p165-b-for-raspberry-pi)

## Best For

- geekworm enthusiasts

## Why This Product

- Trusted geekworm brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Modular Fan Support:** Easily add a 30mm (3010 or 3007) cooling fan to tackle intense workloads and eliminate overheating, guaranteeing uninterrupted productivity.
- • **Slim Armor-Grade Cooling:** 11mm thick aluminum heatsink engineered to fit seamlessly with Raspberry Pi 4 Model B and expansion boards, delivering sleek, space-saving thermal management.
- • **Enhanced Thermal Efficiency:** Zero-gap design between heatsink protrusions and CPU/RAM chips, paired with recommended thermal grease, slashes temperatures by up to 10°C for peak performance.
- • **Universal Pi 4 Compatibility:** Optimized for all Raspberry Pi 4 RAM variants (1GB to 8GB) and supports PoE extension ports, ensuring versatile integration without compromise.
- • **Customizable Mounting Flexibility:** Includes 4 M2.5x5+5mm spacers with options to add standoffs or screws, enabling secure installation even with additional expansion boards or unique setups.

## Overview

The Geekworm 11mm Embedded Heatsink (P165-B) is a precision-engineered aluminum cooling solution designed specifically for Raspberry Pi 4 Model B variants. Its slim 11mm profile fits perfectly with Pi 4 expansion boards and PoE ports, while the zero-gap design combined with thermal grease dramatically reduces CPU temperatures by up to 10°C. Supporting optional 30mm fans and customizable mounting hardware, it ensures reliable, high-performance cooling for professional-grade Pi projects.

## Description

Product description Note 1. This is a new version P165-B embedded heatsink with 11mm thickness . 2. The P165-B embedded heatsink support install the 30mm(3010 or 3007) cooling fan. No cooling fan included in the packing list. 3. Add one piece thermal tape as gift in case you will need. But it is strongly recommend to use the CPU thermal conductive grease (not included) to attach on the CPU/RAM of Raspberry Pi 4 to get better heat dissipation. Due to shipping restrictions, please prepare the CPU grease yourself. 4. The Raspberry Pi 4 board or TF card is NOT included in the packing list. Overview This P165-B is an upgraded version of P165-A, which is perfectly compatible with POE extension. Geekworm design new version embedded armor aluminum alloy heatsink(P165-B) to slove Raspberry Pi 4 excessive heat generation problem when use Raspberry Pi 4 Model B with its expansion board. This heatsink can also be used with a 30mm cooling fan above. The Raspberry Pi 4 POE port is available to use now for the new version. Key Features Only supports Raspberry Pi 4 Model B; Supports to cooling down the Raspberry Pi 4 board when using the Pi 4 expansion board; Equipped with only 4pcs M2.5x5+5mm spacers; you will need to prepare extra standoffs or screws for Raspberry Pi 4 with other expansion boards. Raspberry Pi HAT positioning hole is M2.5 internal thread; (this design is convenient to fix) Supports the installation of 30mm fans; Cooling fan can be added when the heat dissipation of a single aluminum heat sink is not enough, so that all heat dissipation problems can be solved. ( 3010 fan or 3007 fan is OK to use ) Reserve POE port of Raspberry Pi 4, the POE port is available to use. Heatsink size: 65x55x11mm/2.55x2.16x0.43inch Packing list 1 x 11mm thicness armor heatsink(P165-B) 4 x M2.5x5+5mm spacers 1 x thermal tape( as gift, only use it when you need) FAQ 1. Why design this new P165-B 11mm embedded heatsink? A: We found that the copper spacers height required for most Raspberry Pi expansion boards is 11mm, so we designed this 11mm embedded heatsink(P165-B). Compared with the old model(P165-A), the heat dissipation area is increased and the heat dissipation effect will be better; at the same time, this new version support POE extension; 2. What if the Raspberry Pi 4 expansion board comes into contact with the heatsink? A: Please use the 2*20 female header to add the height of expanion board. (If you need gpio extension, please refer to ASIN: B0827THC7R ) 3. What to do if the heat dissipation is not enough? A: The P165-B heatsink thickness is 11mm, if the Pi 4 overclock for a long time, the heat dissipation may be insufficient and you need to add a cooling fan above the heatsink, the heatsink can support 3007 or 3010 cooling fan installation. 4. Does the heatsink support PoE expansion Board? A: The P165-B heatsink reserves POE port of Raspberry Pi 4, the POE port is available to use. But the compatibility need to tested, there are different PoE expansion boards on the market. 5. What size screws are needed to attach a 30mm fan to the p165-b heatsink? A: To attach 30mm fan above P165-B, you will need the M3 screws not M2.5. For 3010 fan, we receommend to use KM3x14mm screws. Geekworm Design Heatsink

Review: Works well, I would buy again. - Nice heat-sink. I used some generic 'white' heat sink paste on the Raspberry Pi 4 B and this heat sink lowered the CPU temperature by 10 degrees C. So it works well. It is well made and has a nice finish. I have the PI mounted to the backside of the display, and I was able to drill out the threads of the heat-sink and use the supplied 12mm screws to attach the heat-sink to the existing display standoffs. This is really nice as many of the heat-sinks need much longer screws to mount this way. But here the supplied screws worked. See the picture below that shows the supplied screws being used to secure the RP-4 B to an existing Display Mount. Bottom line: I would buy this again.
Review: Does the job well - Fits well, keeps the pi cool without a fan, and easy to install!

## Features

- Compatibility: Compatible with Raspberry Pi 4 Model B 1GB/2GB/4GB/8GB, embedded heatsink with 11mm thickness; Model: P165-B
- Supports to cooling down the Raspberry Pi 4 board with Pi 4 expansion board(reserve the PoE port of Pi 4); Compatible with Raspberry Pi 4 expansion board to slove the raspberry pi 4 overheat problem, BUT you will need to prepare the proper standoffs or screws to use the P165-B with other expansion board
- Recommend to use CPU thermal conductive grease: The theoretical value of the gap between the heatsink protrusions and the CPU, RAM and other chips of Pi 4 is 0mm; Strongly recommend to use CPU grease to get better heat dissipation
- Only equipped with 4pcs M2.5x5+5 mm spacers for the P165-B embedded heatsink, you will need to prepare extra standoffs or screws for Raspberry Pi 4 with other expansion boards
- Supports the installation of 30mm fan(3010 or 3007 fan); Cooling fan can be added when the heat dissipation of a single aluminum heatsink is not enough, so that all Raspberry Pi 4 heat dissipation problems can be solved

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08N5VZN8R |
| Best Sellers Rank | #1,131 in Single Board Computers (Computers & Accessories) |
| Brand | Geekworm |
| Brand Name | Geekworm |
| CPU Socket | Broadcom BCM2711 |
| Cooler Heatsink Compatibility | for Raspberry Pi 4 |
| Cooler Heatsink Material | Aluminum |
| Customer Reviews | 4.5 out of 5 stars 108 Reviews |
| Item Dimensions L x W x H | 2.55"L x 2.16"W x 0.43"H |
| Item Weight | 1.2 Ounces |
| Manufacturer | Geekworm |
| Model | P165-B |
| Mounting Type | PCB Mount |
| Part Number | TB-2020-12 |
| Product Dimensions | 2.55"L x 2.16"W x 0.43"H |
| Warranty Description | 3 months |

## Product Details

- **Brand:** Geekworm
- **Cooler Heatsink Material:** Aluminum
- **Product Dimensions:** 2.55"L x 2.16"W x 0.43"H
- **Cooler Heatsink Compatibility:** for Raspberry Pi 4
- **Item Weight:** 1.2 Ounces

## Images

![Geekworm 11mm Thickness Embedded Heatsink (P165-B) for Raspberry Pi 4, Armor Aluminum Radiator Compatible with Raspberry Pi 4 Model B Computer and Pi 4 Expansion Board Support POE Extension - Image 1](https://m.media-amazon.com/images/I/61L7cR--gjL.jpg)
![Geekworm 11mm Thickness Embedded Heatsink (P165-B) for Raspberry Pi 4, Armor Aluminum Radiator Compatible with Raspberry Pi 4 Model B Computer and Pi 4 Expansion Board Support POE Extension - Image 2](https://m.media-amazon.com/images/I/71xtu+HsprL.jpg)
![Geekworm 11mm Thickness Embedded Heatsink (P165-B) for Raspberry Pi 4, Armor Aluminum Radiator Compatible with Raspberry Pi 4 Model B Computer and Pi 4 Expansion Board Support POE Extension - Image 3](https://m.media-amazon.com/images/I/91BFgyhGCgL.jpg)
![Geekworm 11mm Thickness Embedded Heatsink (P165-B) for Raspberry Pi 4, Armor Aluminum Radiator Compatible with Raspberry Pi 4 Model B Computer and Pi 4 Expansion Board Support POE Extension - Image 4](https://m.media-amazon.com/images/I/71RCGrQadaL.jpg)
![Geekworm 11mm Thickness Embedded Heatsink (P165-B) for Raspberry Pi 4, Armor Aluminum Radiator Compatible with Raspberry Pi 4 Model B Computer and Pi 4 Expansion Board Support POE Extension - Image 5](https://m.media-amazon.com/images/I/71f-zgTCo6L.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well, I would buy again.
*by S***N on July 20, 2025*

Nice heat-sink. I used some generic 'white' heat sink paste on the Raspberry Pi 4 B and this heat sink lowered the CPU temperature by 10 degrees C. So it works well. It is well made and has a nice finish. I have the PI mounted to the backside of the display, and I was able to drill out the threads of the heat-sink and use the supplied 12mm screws to attach the heat-sink to the existing display standoffs. This is really nice as many of the heat-sinks need much longer screws to mount this way. But here the supplied screws worked. See the picture below that shows the supplied screws being used to secure the RP-4 B to an existing Display Mount. Bottom line: I would buy this again.

### ⭐⭐⭐⭐⭐ Does the job well
*by A***R on April 6, 2026*

Fits well, keeps the pi cool without a fan, and easy to install!

### ⭐⭐⭐⭐⭐ Effective heating that does the job.
*by A***S on December 25, 2021*

Impressive heat sink for my pi 4 picoreplayer. I needed one that would allow me to add a digi hat and this one worked great. It lowered the temp by 10 degrees inside a vented plastic case, the heatsink was also 5 degrees cooler than using that same vented case with a fan. Thus, I could cool my pi 4, keep the case I like and eliminate the fan. In my case without fan, the temp stays right at 50 ° C, YMMV. I did use thermal grease and it would have been nice if they had included a small dab with the heatsink.

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-06-07*