---
title: LockNLube Grease Coupler (Standard 1/8″) – (GC81011-NPT/GC81068-NPT) / (GC81011-BSPT/GC81068-BSPT) - Service Kits
description: Help
---

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10 February 2026

# LockNLube Grease Coupler (Standard 1/8″) – (GC81011-NPT/GC81068-NPT) / (GC81011-BSPT/GC81068-BSPT) - Service Kits

## The original, patented LockNLube® Grease Coupler, a quick-connect grease gun coupler that locks onto grease fittings (zerks) and stays on without leaking up to 10,000 PSI. With a thumb lever, it releases instantly even under pressure, ending the common frustrations of greasing (couplers popping off, messy spurts, stuck couplers). Fits all standard grease guns via 1/8″ connection and is fully rebuildable.

- **Rebuild Capability** 
    - Fully rebuildable design
- **Coupler Rebuild Kit GC81012-ANZ** 
    - Includes new rubber seal and four steel jaws
    - Restores like‑new sealing and grip

<iframe width="560" height="315" src="https://www.youtube.com/embed/q-XR9wM-UYA?si=kJnXcJMiPfzC2eUa" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen style="position: absolute; top: 0px; left: 0px; width: 100%; height: 100%; border: none;"></iframe>

- **Rebuild Process** 
    - Unscrew front cap
    - Remove old seal and jaws
    - Clean internal components
    - Install new seal and jaws
    - Reassemble and tighten

<iframe width="560" height="315" src="https://www.youtube.com/embed/XZw2XdWKStE?si=426CpmFUvIX3K8cA" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen style="position: absolute; top: 0px; left: 0px; width: 100%; height: 100%; border: none;"></iframe>

- **Service Interval** 
    - Heavy users may rebuild annually or as needed
    - Light users may go years without rebuild
- **Additional Parts** 
    - Thumb lever, spring, and pins available if damaged (rare)

<iframe width="560" height="315" src="https://www.youtube.com/embed/ifKUbiN9dDA?si=QSIUNvOp9HrfWyw1" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen style="position: absolute; top: 0px; left: 0px; width: 100%; height: 100%; border: none;"></iframe>

- **Replacement Option** 
    - Entire coupler can be replaced if preferred
    - Can swap to XL coupler for recessed fittings
- **Summary** 
    - Rebuild kits are inexpensive and fast to install
    - Extends coupler life almost indefinitely

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    - [Grease Equipment](https://kb.macnaughtgroup.com/product-applications?hsLang=en-au#grease-equipment)
    - [Air Equipment](https://kb.macnaughtgroup.com/product-applications?hsLang=en-au#air-equipment)
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    - [Grease Equipment](https://kb.macnaughtgroup.com/product-troubleshooting-maintenance?hsLang=en-au#grease-equipment)
    - [Air Equipment](https://kb.macnaughtgroup.com/product-troubleshooting-maintenance?hsLang=en-au#air-equipment)
- [Find Repair Kits](https://kb.macnaughtgroup.com/find-repair-kits?hsLang=en-au#main-content)

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    - [Air Equipment](https://kb.macnaughtgroup.com/find-repair-kits?hsLang=en-au#air-equipment)
- [Warranty Policy](https://kb.macnaughtgroup.com/warranty-policy?hsLang=en-au#main-content)

    - [Grease Equipment](https://kb.macnaughtgroup.com/warranty-policy?hsLang=en-au#grease-equipment)
    - [Air Equipment](https://kb.macnaughtgroup.com/warranty-policy?hsLang=en-au#air-equipment)