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LockNLube Grease Gun Coupler locks onto Zerk fittings. Grease goes in, not on the machine. World's best-selling original locking grease coupler. Rated 10,000 PSI. Long-lasting rebuildable tool.

  • Based on 31,671 reviews
Condition: New
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Holiday Deal · 27% off was $47.98

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Availability: In Stock.
Fulfilled by Amazon

Arrives Dec 15 – Dec 16
Order within 13 hours and 44 minutes
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Size: NPT With Spare Rebuild Kit


Features

  • LOCKS ON, STAYS ON, WON'T LEAKLIKE HAVING AN EXTRA HAND! No need to hold the coupler in place while trying to grease your machinery. The LockNLube Grease Coupler locks on tight and lets you use both hands on your grease gun.
  • THE ONLY REBUILDABLE LOCKING COUPLER: We include a spare rebuild kit! It's like getting two couplers for the price of one.
  • 1/8" NPT COMPATIBLE WITH ALL GREASE GUNS - BATTERY, PNEUMATIC, MANUAL: Whether you are using Grandpas old Alemite lever grease gun, or the latest battery or pneumatic grease guns, the LockNLube Grease Coupler can be added to upgrade your grease gun.
  • WORKS ON ALL ZERK FITTINGS, SAE & METRIC with a full lineup of adapters to reach any grease fighting on any machine!
  • EASY TO USE: Press the thumb lever to open the LockNLubes patented jaws and attach to the Zerk. Release the thumb lever and the LockNLube locks on tight! Press the thumb lever again to easily release from the Zerk, even under pressure!
  • RATED UP TO 10,000 PSI
  • BEST BUILT GUARANTEE: The LockNLube Grease Coupler is covered by our unconditional 1-year warranty

Brand: LockNLube


Item dimensions L x W x H: 3.45 x 0.63 x 1.66 inches


Exterior Finish: Uncoated Metal


Maximum Operating Pressure: 10000 Pound per Square Inch


Number of Ports: 2


Global Trade Identification Number: 60


Manufacturer: LockNLube


UPC:


Brand: ‎LockNLube


Item dimensions L x W x H: ‎3.45 x 0.63 x 1.66 inches


Exterior Finish: ‎Uncoated Metal


Maximum Operating Pressure: ‎10000 Pound per Square Inch


Number of Ports: ‎2


Global Trade Identification Number: ‎60


Manufacturer: ‎LockNLube


UPC: ‎810102950260


Model: ‎LockNLube Grease Coupler


Item Weight: ‎4 ounces


Product Dimensions: ‎3.45 x 0.63 x 1.66 inches


Item model number: ‎1/8\\\" NPT


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎GC81011


Date First Available: December 9, 2013


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Dec 15 – Dec 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great product That doesn't disappoint!
Size: NPT With Spare Rebuild Kit
Works great... Way better than the original grease coupler... i should have bought one sooner. would have saved me some headache.... i definitely recommend you buy one.... it locks on well. and easy to use.. no leaks. and fits well
Reviewed in the United States on November 11, 2025 by steve

  • Great producr
Size: NPT With Spare Rebuild Kit
This grease gun tip has worked well and make it so much easier to service zirc fitting equipped components.
Reviewed in the United States on October 30, 2025 by Keith

  • Works great
Size: NPT With Spare Rebuild Kit
This really works well! No more grease collecting around the zerk fitting. A great gift idea!
Reviewed in the United States on October 29, 2025 by tim

  • Great attachment
Size: NPT With Spare Rebuild Kit
Works great, pays for itself in (unwasted) grease.
Reviewed in the United States on October 26, 2025 by Tony

  • Grease oozes out after taking it off the z e r k
Size: NPT With Spare Rebuild Kit
These usually work well but this particular one every time I take it off the zerk grease continues to ooze out. Very annoying it's ruined a lot of my clothes and I have to put a rubber Nitro glove on the end of the tip every time I store it as the grease will come out and make a mess. Not impressed I think lock and Lube should replace it for me I have three other lock and lube fittings and they all seem to work but this one doesn't ... show more
Reviewed in the United States on October 11, 2025 by Jeff M.

  • Great product
Size: NPT With Spare Rebuild Kit
This is well made and designed. It makes the job much easier and less messy. Also much less waste
Reviewed in the United States on October 3, 2025 by Alaska Raven

  • This one works.
Size: NPT With Spare Rebuild Kit
I balked at the price at first. It's half the price of grease gun, but it works. I have arthritis in my hands and trying to pump grease with one hand and holding the barrel on the zerk fitting didn't work. Screw on/off, bayonet types, tried them all, but this one performs as advertised. Squeeze the lever and push it on the grease fitting and it holds tight without any help from me. I can use both hands to pump grease. And it is fast. I did a whole bucket loader with backhoe in 15 minutes. It is small enough to fit into tight places on itty bitty Japanese tractors. I'm so happy, I'm going to grease the drive train on my Jeep right now just because I can. ... show more
Reviewed in the United States on July 27, 2025 by Douglas A. Widerholt

  • Well worth the money
Size: NPT With Spare Rebuild Kit
These things are great and make it easy to remove grease gun...I have them on all my grease guns.
Reviewed in the United States on November 17, 2025 by Armyfister

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