Zoom LockNLube Grease Gun Coupler
Zoom LockNLube Grease Gun Coupler
Zoom LockNLube Grease Gun Coupler
Zoom LockNLube Grease Gun Coupler
Zoom LockNLube Grease Gun Coupler
Zoom LockNLube Grease Gun Coupler
Zoom LockNLube Grease Gun Coupler
Zoom LockNLube Grease Gun Coupler
Zoom LockNLube Grease Gun Coupler
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Zoom LockNLube Grease Gun Coupler
Zoom LockNLube Grease Gun Coupler

LockNLube Grease Gun Coupler

SKU: GC81011
2149 reviews
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  • Locks on, does not 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
  • World's original locking grease coupler.
  • Includes a rebuild kit! The LockNLube® is the world's only rebuildable grease coupler. Lowest lifetime cost.
  • Patented Locking Technology. US Patent #8955544
  • As seen on TruckU on the Motortrend Channel!

This item ships FREE!

LockNLube Grease Gun Coupler


The LockNLube® Grease Coupler is compatible with all grease guns and grease fittings. It does not leak once locked on and will not pop off under pressure. No hands are needed to align or hold the coupler in place while greasing. You have both hands free to operate your grease gun and know that the grease will go in, not on, your machine. Guaranteed.

It has a unique sliding sleeve, activated by a thumb lever. The sleeve locks the four spring-steel jaws onto the Zerk fitting, and releases the jaws by pushing on the thumb lever. When the jaws are locked onto the Zerk, a leak-proof seal is created. The locked connection is positive and rigid preventing the coupler from coming loose and breaking the leak-proof seal. If a fitting becomes pressurized, especially a recessed one, just depress the thumb lever and release the coupler.

The LockNLube® Grease Coupler is fully rebuildable. If it starts to leak, you simply replace the seal and jaws and it is as good as new. See our tutorial here. We include a free rebuild kit with every coupler that we sell. Additional rebuild kits are also available from our store.

The LockNLube® Grease Coupler works with all grease gun manufacturers, including Lumax, Alemite, Plews lubrication (Edelman), Granger, SKF, Macnaught, ADT, Milwaukee, John Deere, Wilmar, Legacy, Allstar, Sealey, Draper and many others.


To see video reviews and read more customer comments, click here.


Over 20,000 Five-Star Reviews

"I highly recommend LockNLube. Great product and unbelievable customer service!"

James W.

"I loved my first so much a bought a second. Don’t even worry about shopping around. This Is Your Grease Gun!!"

Ben H.

"Greatest thing since the invention of the aluminum beer can ... won't own a grease gun without it"

Chris C.
Customer Reviews
4.9 Based on 2,149 Reviews
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Brian M.
United States United States

Great product!!!

Worked just as described. So much easier than trying to hold the coupler on the zerk and operate the grease gun.

Andy L.
United States United States

Love and lock grease gun fitting

I liked it when I used to grease my race car

Steven C.
United States United States

worked well on areas easily accessible. one fitting on my car you could get on the fitting but were unable to open the jaws because of the tight area.

John C.
United States United States

Grease gun coupler

Works as it Advertised. Purchasing another coupler for in shop machinery works awesome

merlin m.
United States United States

You have to be very straight on zerk or it won’t lock on.