LockNLube® Grease Gun Coupler
SKU: GC81011
🚚 This item includes FREE shipping
- Completely hands-free and leak-free lock
- Easily disconnects, even under pressure
- Works on all Zerk fittings, SAE and metric
End greasing frustration with the original locking grease coupler!
- Locks on, stays on, won't leak. Rated up to 10,000 PSI
- Easily disconnects, even under pressure. No more broken Zerks
- 1/8" NPT compatible with all grease guns - battery, pneumatic, manual
- Grease goes in, not on, the machine
- Works on all Zerk fittings, SAE and metric
- Available with or without a spare rebuild kit.
- Patented Locking Technology. US Patent #8955544
- As seen on TruckU on the Motortrend Channel!
6 reasons why people are switching to the LockNLube® Grease Coupler 🎉
Also available with a 2" longer barrel for those deeply recessed fittings! Click here to purchase your XL Coupler from LockNLube.
This item ships FREE!
LockNLube® Grease Gun Coupler
Over 20,000 Five-Star Reviews
"I highly recommend LockNLube. Great product and unbelievable customer service!"
"Best grease gun I've owned! Works exactly as described. Zero issues with priming the gun. The locking coupler works fabulously and leaves a free hand to help pump."
"Greatest thing since the invention of the aluminum beer can ... won't own a grease gun without it"
End greasing frustration with the LockNLube® Grease Coupler—the ultimate solution for leak-free greasing. Compatible with all grease guns and grease fittings, it locks on, stays on, and won't pop off under pressure. That means less mess, and less wasted grease.
With its unique sliding sleeve and thumb lever, the LockNLube® Grease Coupler easily locks its four steel jaws onto the Zerk fitting, creating a secure, leak-proof seal. And when you’re done, a simple press of the thumb lever releases the coupler—even under pressure. The perfect solution to greasing recessed fittings that make removing your coupler a zero-breaking chore.
The LockNLube® Grease Coupler is fully rebuildable. If it ever starts to leak, just replace the seal and jaws, and it’s as good as new.
It works with all major grease gun brands—Lincoln, Milwaukee, DeWalt, John Deere, Alemite, Pleas, Legacy, and many more—so you know it’s the right fit for your tools.
Ready to experience the difference? Click here to see video reviews and read customer comments, and get your LockNLube® Grease Coupler today!
End greasing frustration with the LockNLube® Grease Coupler—the ultimate solution for leak-free greasing. Compatible with all grease guns and grease fittings, it locks on, stays on, and won't pop off under pressure. That means less mess, and less wasted grease.
With its unique sliding sleeve and thumb lever, the LockNLube® Grease Coupler easily locks its four steel jaws onto the Zerk fitting, creating a secure, leak-proof seal. And when you’re done, a simple press of the thumb lever releases the coupler—even under pressure. The perfect solution to greasing recessed fittings that make removing your coupler a zero-breaking chore.
The LockNLube® Grease Coupler is fully rebuildable. If it ever starts to leak, just replace the seal and jaws, and it’s as good as new.
It works with all major grease gun brands—Lincoln, Milwaukee, DeWalt, John Deere, Alemite, Pleas, Legacy, and many more—so you know it’s the right fit for your tools.
Ready to experience the difference? Click here to see video reviews and read customer comments, and get your LockNLube® Grease Coupler today!
| Max pressure | 10,000 psi (690 Bar) |
| Zerk Compatibility | Fits all DIN and SAE specification Zerks (grease nipples). |
| Coupler Thread | ⅛” NPT female thread. |
| Dimensions | L: 3½ x W: 5/8 x H: 1⅗ In (L: 88mm x W: 16mm x H: 41 mm) |
| Diameter (front of coupler) | 5/8 in (16 mm). Fits most recessed grease fittings (Zerks). ~1mm larger than standard coupler |
| Weight | 4 oz. (100 grams) |
| Grease Gun Compatibility | Works with all grease gun types: pneumatic, manual, and electric. |
| Seal | Durable nitrile rubber seal for longevity under high pressure |
| Lock-on Mechanism | Four hardened steel jaws are resilient under high pressure. Patent protected. |
| Patent | US Patent #8,955,544 |
Trying to remove your old coupler and attach the LockNLube® Grease Coupler? Click here.
LockNLube Grease Coupler Spec Sheet
Illustrated Rebuild Kit Replacement Instructions
Grease Coupler Cap
Grease Fitting Caps (50 count)
- Shipping options are available at checkout
- All of our orders ship out of either our Illinois or New Hampshire warehouse within 3 business days.
- Shipping carrier varies by size and weight of the package.
- LockNLube's shipping department operates Monday through Friday, 8 am to 2 pm EST except for holidays.
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An Effective Buy for Your Grease Gun
Works great and as described. Installed on my Dewalt Grease Gun easily without any issues. Glad I purchased this before beginning as it definitely proved its efficiency of use. I recommend. Thank you. https://youtu.be/bFT1y9RW1LQ?si=V3QhDwOsyHpLT1uF https://youtu.be/5c2bioBuAdI?si=z1WCAzkT9C2R8BIY (I didn’t use any pipe thread tape or it wasn’t needed in my application, however this gentleman has some good useful know how’s with the Dewalt Grease Gun and LockNLube Grease Gun Coupler).
Absolutely awesome products!!
I have each one of my grease guns set up with the LockNLub, they are absolutely awesome! I also have 2 of the LockNFlate on my air hose and they are just as good as the grease gun couplers! I love them!!