---
title: LockNLube Grease Coupler XL (GC81042-NPT & GC81042-BSPT) - Service Kits
description: Help
---

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1. [Macnaught Group Help](https://kb.macnaughtgroup.com/?hsLang=en-au)
2. [Find Repair Kits](https://kb.macnaughtgroup.com/find-repair-kits?hsLang=en-au)
3. [Grease Equipment](https://kb.macnaughtgroup.com/find-repair-kits?hsLang=en-au#grease-equipment)

10 February 2026

# LockNLube Grease Coupler XL (GC81042-NPT & GC81042-BSPT) - Service Kits

## Extended-reach locking grease coupler (approx. 4" reach) for accessing recessed grease fittings. Rated to 10,000 PSI, it locks onto standard Zerks (grease nipples) to provide a secure, leak-free connection and releases easily with a thumb lever. Available with 1/8″ NPT or 1/8″ BSPT threads to fit all grease guns.

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- **Rebuildable Design** 
    - Fully rebuildable like the standard LockNLube coupler
    - Internal mechanism is identical to the standard model
- **Rebuild Kit Contents** 
    - New rubber seal
    - Set of four hardened steel jaws
    - Optional spacer ring (varies by kit)
- **Compatibility** 
    - Same rebuild kit fits **both standard and XL couplers**
    - No XL‑specific kit required
- **Rebuild Process** 
    - Unscrew front collar
    - Remove old seal and jaws
    - Clean internal cavity
    - Install new seal and jaws
    - Reassemble (2–3 minute process)
- **Service Interval** 
    - Many users grease hundreds of fittings before rebuild is needed
    - Heavy users may rebuild annually
- **Availability** 
    - Kits sold separately or bundled with the coupler
    - Tutorials available from LockNLube
- **Summary** 
    - Rebuild kits extend coupler life indefinitely
    - Low‑cost, field‑serviceable maintenance solution

- [Product Applications](https://kb.macnaughtgroup.com/product-applications?hsLang=en-au#main-content)

    - [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)
- [Product Troubleshooting & Maintenance](https://kb.macnaughtgroup.com/product-troubleshooting-maintenance?hsLang=en-au#main-content)

    - [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)

    - [Grease Equipment](https://kb.macnaughtgroup.com/find-repair-kits?hsLang=en-au#grease-equipment)
    - [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)