LockNLube GC81042 - Locking Grease Gun Coupler XL
LockNLube GC81042 - Locking Grease Gun Coupler XL
The LockNLube GC81042 Grease Coupler XL is the professional solution for reaching deeply recessed Zerk fittings that standard couplers simply cannot access. Featuring nearly 4 inches of reach, this extra-long model maintains the same legendary leak-free and hands-free performance as the original LockNLube coupler. Engineered with a unique sliding sleeve and four hardened spring steel jaws, it creates a rock-solid, leak-proof seal that will not pop off under pressure, even when pushed to 10,000 PSI. The thumb-operated trigger allows for an effortless disconnect, even when the fitting is under extreme back pressure, preventing the common issue of broken fittings or wasted grease.
Performance Features
- Extended Reach: Over 3.5 inches (91mm) of effective reach, perfect for U-joints, harvester heads, and shielded PTO shafts.
- Hands-Free Locking: Locks onto the Zerk and stays on, freeing up both hands to operate the grease gun.
- High Pressure Rated: Tested and rated for leak-free operation up to 10,000 PSI (690 Bar).
- Easy Release: Simply depress the thumb lever to release, even under high pressure—no more yanking or twisting.
- Universal Compatibility: Fits all standard 1/8" NPT grease hoses and works with all SAE and Metric Zerk fittings.
- Rebuildable Design: The world's only rebuildable coupler; includes a spare seal and jaw kit for a lifetime of use.
Technical Specifications
| Maximum Pressure | 10,000 PSI (690 Bar) |
| Connection Type | 1/8" NPT (Female) |
| Reach Length | 3.625 inches (92 mm) |
| Overall Length | 5 inches (127 mm) |
| Coupler Diameter | 0.625 inches (16 mm) |
| Material | Hardened Steel Jaws, Nitrile Rubber Seal |
What's Included
- 1 x LockNLube GC81042 Grease Coupler XL
- 1 x Spare Rebuild Kit (Replacement Jaws & Seal)
Shipping & Returns
Shipping & Returns
Free Shipping Canada Wide* on Orders Over $149
Orders over $149 (before tax) that weigh 50 lb or less ship free.
Free Shipping Policy Restrictions
Large or heavy items (over 50 lb) ship at the most economical rate available. Orders shipping to the Northwest Territories, Yukon and Nunavut are not eligible for free shipping. *Our free shipping policy is subject to change without notice.
How long will it take to get my order?
Most orders arrive in 2–5 business days after dispatch. Orders within Ontario often arrive the next business day. Expedited shipping is available at extra cost on request.
Most in-stock orders placed by 1:00 PM ET (Monday–Friday) ship the same day. Orders placed after 1:00 PM ET, on weekends or on holidays ship the next business day.
Large, overweight and LTL freight orders may need 1 or more extra business days to prepare.
What shipping carriers do you use?
Most orders are shipped courier via Purolator, UPS, or Canada Post. We will use other carriers at our own descretion depending on Product size and weight.
Do you ship overseas?
We are not currently shipping to the USA. We are currently mainly shipping within Canada, and we are slowly adding Other Countries. Please Contact us if you are unable to Checkout. See more out International Orders HERE
I only received part of my order, where is the rest?
Your order may ship in more than one package depending on the quantity or size of the products purchased. Also, items in your order may ship from either of our 2 locations and arrive in separate deliveries.
Sometimes we place smaller items from your order inside of one box to save on shipping so always open all boxes to confirm what you have recieved.
Can I return my product?
Returns and exchanges follow the manufacturer's satisfaction guarantee for each brand. Please contact us before sending anything back, and we will tell you where to send it.
If a product is defective on arrival and you notice it and contact us within 3 days of delivery, Wise Line Tools will handle it and pay the shipping.
You pay the shipping cost of returning an item, or you can bring it to either of our stores.
See our Returns Policy and Warranty Information for details.
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
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How long does it take to process an order?
How long does it take to process an order?
Orders are typically processed within 1 business day. You will receive a confirmation email with tracking details once your order has been shipped. Please note that processing times may be slightly longer during high-demand periods or sales events.
Do you ship internationally?
Do you ship internationally?
Yes, we offer international shipping to most countries. Shipping rates and delivery times vary depending on the destination. Any applicable customs duties or taxes will be the responsibility of the recipient. We are not currently shipping to the USA.
What is your return policy?
What is your return policy?
Returns and exchanges follow the manufacturer's satisfaction guarantee. Please contact us before sending anything back. If a product is defective on arrival and you notice it and contact us within 3 days of delivery, Wise Line Tools will handle it and pay the shipping. You pay return shipping, or you can bring the item to either of our stores. See our Returns Policy and Warranty Information.
