---
product_id: 50860318
title: "G.Coupler + G.SPARES Kit - The Original Lock-On Zerk Fitting Grease Gun G Coupler (⅛\" BSP)"
brand: "gurtech"
price: "€ 1.83"
currency: EUR
in_stock: true
url: https://www.desertcart.de/products/50860318-g-coupler-g-spares-kit-the-original-lock-on-zerk
store_origin: DE
region: Germany
---

# Rebuildable with G.SPARES kit 690 bar / 10,000 psi max pressure Fits all SAE & Metric Zerk fittings G.Coupler + G.SPARES Kit - The Original Lock-On Zerk Fitting Grease Gun G Coupler (⅛" BSP)

**Brand:** gurtech
**Price:** € 1.83
**Availability:** ✅ In Stock

## Summary

> 🔧 Lock it, pump it, forget it — the ultimate hands-free greasing revolution!

## Quick Answers

- **What is this?** G.Coupler + G.SPARES Kit - The Original Lock-On Zerk Fitting Grease Gun G Coupler (⅛" BSP) by gurtech
- **How much does it cost?** € 1.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/50860318-g-coupler-g-spares-kit-the-original-lock-on-zerk)

## Best For

- gurtech enthusiasts

## Why This Product

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

## Key Features

- • **Lock-On Power:** Securely locks to Zerk fittings for leak-proof, hands-free lubrication under extreme pressure.
- • **Heavy-Duty Ready:** Built from durable alloy steel and nitrile rubber for rugged industrial, farm, and workshop use.
- • **Ergonomic Efficiency:** Eliminates awkward pumping positions—grease confidently from any angle without twisting or yanking.
- • **Extended Service Life:** Rebuildable inner seal with included G.SPARES kit saves money and downtime.
- • **Universal Compatibility:** Works seamlessly with battery, electric, pneumatic, and manual grease guns across all thread standards.

## Overview

The G.Coupler + G.SPARES Kit is a patented, heavy-duty lock-on grease gun coupler designed for industrial and professional use. Compatible with all major grease gun types and thread standards, it locks securely onto SAE and Metric Zerk fittings, delivering up to 690 bar (10,000 psi) pressure without leaks. Its rebuildable design with included spare parts extends service life, reducing costly downtime and maintenance. Ergonomically engineered for hands-free, mess-free lubrication, it’s the go-to solution for efficient, safe, and reliable machinery maintenance.

## Description

Machine downtime costs you money, so you need a proper greasing system that gets the job done. This highly cost effective version, with our G.SPARES Kit, will ensure your G.COUPLER achieves an extended service life. So, if the durable nitrile rubber inner seal is damaged by a burred Zerk fitting / hard contaminant or if it has reached the end of its service life, you can simply replace the serviceable parts. With the help of our unique G.COUPLER grease coupler, you no longer have to pump in awkward, dangerous, and tiring positions. Our G.COUPLER grease fitting is a revolution when compared to the antiquated run-of-the-mill grease couplers you have been frustrated with for years, as it is a simple lock on, mess free, hands free and easy off lubrication solution. So, keep our G.COUPLER on hand at your job site, service workshop, farm, or garage. Simply lock on our hands-free grease coupler to the desired Zerk fitting, bearing, gear or pump from a safe and comfortable position next to your equipment. Because our G.COUPLER is locked on, even when pumped to 690 bar (10,000 psi) extremes, you won’t need to hold on and apply pressure to align the coupler or keep it on the Zerk fitting. You can even hold your greasing device at extreme angles, injecting lubrication efficiently, all the while eliminating leaking grease. Simply pressing the trigger again will release the G.COUPLER from the Zerk fitting - No more hydraulic locks that require twisting, yanking, or screwdrivers. Our hands-free grease coupler assembly attachment is the solution to make greasing easier than ever before. We also have an extra long version that allows you to reach those Zerk fittings that are buried deep. This is especially useful for U-Joints, Harvester Heads, shielded PTO shafts, and any fittings buried deep behind a shield. Try all of our professional greasing and lubrication delivery products for your heavy-duty machinery.

## Features

- FOR INDUSTRIAL EQUIPMENT: Our original patented Locking Grease Coupler is a heavy-duty tool ideal for all machinery requiring lubrication at the construction site, mine, farm, forest, maintenance facility, service workshop or anywhere on site.
- FUNCTIONAL: Choose from M10x1, 1/8" BSP, or 1/8" NPT thread connections for compatibility to all available Grease Gun Brands & regional specifications. Our G.COUPLER fits all SAE and Metric (DIN) Zerk fitting grease nipples and works with battery, electric, pneumatic, and manual grease guns.
- FUNCTIONAL: Choose from M10x1, 1/8" BSP, or 1/8" NPT thread connections for compatibility to all available Grease Gun Brands & regional specifications. Our G.COUPLER fits all SAE and Metric (DIN) Zerk fitting grease nipples and works with battery, electric, pneumatic, and manual grease guns.
- QUICK & EASY: Depress the trigger & attach to the desired Zerk fitting. The lever-action mechanism locks the G.COUPLER to the Zerk, creating a leak-proof seal to the joint. Depress the trigger again to release, no more twisting or yanking, even under maximum operating pressures of 690bar / 10,000psi.
- SAVES YOU MONEY: Our rebuildable hands-free G.COUPLER is the leader in lubricant delivery technology. If the internal seal is damaged by a burred Zerk, hard contaminant, or simply because it has reached its service life, use the included G.SPARES Kit to fully rebuild your G.COUPLER.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | GURTECH |
| Part Number | GC81017SK |
| Package Dimensions | 8.8 x 5 x 2.1 cm; 120 g |
| Item model number | GC81017SK |
| Size | ⅛" BSP |
| Colour | Black, Gold, Silver |
| Material | Alloy Steel, Rubber |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 120 g |

## Product Details

- **Size:** ⅛" BSP
- **Material:** Alloy Steel, Rubber
- **Brand:** GURTECH
- **Colour:** Black, Gold, Silver
- **Connector type:** Nipple
- **Thread size:** 0.125 inch
- **Thread type:** BSP
- **Item weight:** 120 Grams
- **Number of pieces:** 1
- **Manufacturer:** GURTECH

## Images

![G.Coupler + G.SPARES Kit - The Original Lock-On Zerk Fitting Grease Gun G Coupler (⅛" BSP) - Image 1](https://m.media-amazon.com/images/I/61+0SNAqxsL.jpg)
![G.Coupler + G.SPARES Kit - The Original Lock-On Zerk Fitting Grease Gun G Coupler (⅛" BSP) - Image 2](https://m.media-amazon.com/images/I/61tp+0fCmaL.jpg)
![G.Coupler + G.SPARES Kit - The Original Lock-On Zerk Fitting Grease Gun G Coupler (⅛" BSP) - Image 3](https://m.media-amazon.com/images/I/61DaCXJ3EbL.jpg)
![G.Coupler + G.SPARES Kit - The Original Lock-On Zerk Fitting Grease Gun G Coupler (⅛" BSP) - Image 4](https://m.media-amazon.com/images/I/51jkYaoFjCL.jpg)
![G.Coupler + G.SPARES Kit - The Original Lock-On Zerk Fitting Grease Gun G Coupler (⅛" BSP) - Image 5](https://m.media-amazon.com/images/I/81wyn7sxYoL.jpg)

## Questions & Answers

**Q: Can anyone confirm the width of the sleeve that holds the jaws? I have a few nipples where access is only 15mm wide**
A: Hello, 
Thank you for your interest in our product and query.
 
Unfortunately our G.COUPLER has an outsider diameter of 16mm. 
GURTECH are working on a new generation G.COUPLER with one of the primary objectives being to decrease the OD.

The launch is not imminent so you may need to continue to use a conventional push on coupler.

Regards, 
Paul Gurney 
G-PRODUCTS

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-01-25*