# Thermal paste QOLTEC 51658 heat sink compound 11 W/m·K, 2 g, grey

**URL:** https://aio.lv/en/product--qoltec-51658--767850
**Data updated:** 2026-03-07 10:54 (EET)
**Category:** Thermal Paste
**Manufacturer:** QOLTEC
**Manufacturer code:** 51658
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 25.49 €
**Prices and availability valid until:** 2026-12-08 23:59
**Price without VAT (21%):** 21.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-51658--767850

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.11.2026 | free |
| Pickup points | 27.11.2026 | 1.99 EUR |
| Courier delivery to door | 27.11.2026 | 4.99 EUR |

## Summary description

QOLTEC 51658 is a grey heat sink compound (thermal paste) with thermal conductivity of 11 W/m·K and net weight 2 g. Designed to improve heat transfer between processors, GPUs or power components and heatsinks, it fills microscopic gaps to reduce thermal resistance. Supplied as a 2 g tube/pack for repair, upgrades and compact cooling applications.

## Long description

QOLTEC 51658 heat sink compound is a grey thermal paste with a thermal conductivity of 11 W/m·K supplied in a 2 g tube. It is formulated to improve heat transfer between processors, GPUs and power components and their heatsinks by filling microscopic gaps and reducing thermal resistance. The compound combines efficient heat conduction with electrical insulation and is intended for repair, upgrades and compact cooling applications where a small quantity of paste is required.
Advantages
The thermal paste offers relatively high thermal conductivity for its class while remaining electrically non-conductive. Its grey formulation is easy to apply and spreads evenly to form a thin, consistent layer between a chip and a heatsink. The product is supplied in a 2 g package suitable for occasional maintenance or small-scale upgrades and retains its properties over extended use without frequent replacement.
Suitable for
Desktop and laptop CPU reapplications and upgrades
GPU cooling maintenance and small repairs
Thermal management of power components, MOSFETs and VRMs
Compact electronics and embedded systems with limited paste quantity
Key specifications
Thermal conductivity: 11 W/m·K
Net weight: 2 g
Colour: Grey
Electrical behaviour: non-conductive (insulating)
How to use
Clean both surfaces (processor/GPU and heatsink) from old thermal material, dust and grease using isopropyl alcohol and a lint-free cloth. Apply a small, pea-sized amount of QOLTEC 51658 to the center of the chip, then mount the heatsink and apply even pressure so the paste spreads into a thin layer. Avoid applying excessive paste; a thin, continuous interface ensures optimal heat transfer. After installation, verify that the heatsink is securely fastened and perform a controlled power-up to check temperatures.
Usage recommendations
Use the 2 g tube for targeted repairs or upgrades; store in a cool, dry place and reseal the tube after use. For high-performance or continuous heavy-load systems consider periodic temperature monitoring to confirm long-term thermal stability.

## Specifications

### Packaging data

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.002 kg |

### Features

| Feature | Value |
|---|---|
| Product colour | Grey |
| Thermal conductivity | 11 W/m·K |

## FAQ

### How much does the Thermal paste QOLTEC 51658 11 W/m·K 2 g cost, and is it available for purchase?

The price is 25.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 317 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 24.11.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All QOLTEC products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized QOLTEC service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: quantity per pack, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/767850/70095590_large.webp