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

LockNLube® Grease Gun Coupler

SKU: GC81011
2381 reviews
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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
  • 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!

    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.

    LockNLube® Grease Coupler Care & Maintenance:

    Check out our YouTube channel for an easy method to clean dirt and grit out of your coupler. This will extend the life of the seal, which means longer use time between rebuilds. If you find your coupler starting to leak, try this cost-saving tip before you put a rebuild kit in it.

    Consider using a Coupler Cap and Zerk Fitting Caps to keep your equipment clean.

    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 2,381 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

    Logan F.
    United States United States

    Great Product


    Mike R.
    United States United States

    Just what we needed

    Bought them before and they work perfectly.

    William H.
    United States United States

    Excellent product! Ilove it.

    Excellent. I love it. I first heard about Lock n Lube on a YouTube video and went to their website. I was so impressed by it I bought two; 1 for my tractor and one for my boat lift at the lake. Best thing I ever bought. Takes away all the mess from greasing.