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Sold by: LockNLube
Sold by: LockNLube
(9798 ratings)
96% positive over last 12 months
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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.

4.7 4.7 out of 5 stars 29,246 ratings

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  • LOCKS ON, DOES NOT LEAK: Grease goes in, not on the machine. LockNLube’s unique sliding sleeve ensures that when the jaws are locked onto the Zerk, a leak-proof seal is created.
  • RATED TO 10,00 PSI. No matter what grease gun you use, the LockNLube Grease Coupler will not leak or pop off at any pressure up to 10,000 PSI. Easily releases with the thumb lever. No more fighting and twisting to disconnect.
  • ONLY REBUILDABLE COUPLER: All LockNLube couplers include a rebuild kit! Simply replace the seal and jaws and it is as good as new = lowest lifetime cost.
  • COMPATIBLE WITH ALL GREASE GUNS AND GREASE FITTINGS: 1/8" NPT works with all grease guns and manufacturers – pneumatic, manual, or electric. Locks on to all Metric and SAE specification Zerk fittings.
  • HANDS FREE, LEAK FREE GREASING: The LockNLube Grease Coupler is rated to 10,000 PSI (690 Bar) and will not release under pressure. No hands are needed to align the coupler or keep it attached. End greasing frustration.
See more product details

Additional Details

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Customer ratings by feature

Easy to remove
4.8 4.8
Easy to use
4.7 4.7
Easy to lock
4.6 4.6
Value for money
4.5 4.5

Customers usually keep this item

This product has fewer returns than average compared to similar products.

Make it a bundle
We found 2 bundles with this item:
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.

Frequently bought together

$32.99
Get it as soon as Monday, Mar 25
In Stock
Sold by LockNLube and ships from Amazon Fulfillment.
+
$189.00
Get it as soon as Monday, Mar 25
In Stock
Sold by Worldwide Deal USA Inc and ships from Amazon Fulfillment.
+
$16.99
Get it as soon as Monday, Mar 25
In Stock
Sold by LockNLube and ships from Amazon Fulfillment.
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This Item
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.
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.
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LockNLube 8-Piece Quick Connect Greasing Accessory Kit. Complete grease fitting connection kit. Reach any grease fitting on any machine. The rip-stop case keeps tools clean and portable.
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Price$32.99-24% $241.48
List:$319.00
-51% $108.00
List:$221.00
$189.00$189.00$79.99
Delivery
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Get it as soon as Monday, Mar 25
Customer Ratings
Easy to use
4.7
4.7
4.8
4.7
4.6
Value for money
4.5
4.6
4.6
4.4
4.3
Battery life
4.7
4.8
4.9
Sold By
LockNLube
Amazon.com
TK Tools
Worldwide Deal USA Inc
Worldwide Deal USA Inc
LockNLube

Product Description

END GREASING FRUSTRATION with the LockNLube Grease Coupler!

The LockNLube Grease Coupler
The LockNLube Grease Coupler
The LockNLube Grease Coupler
The LockNLube Grease Coupler
LockNLube Grease Coupler LockNLube XL Grease Coupler LockNLube Heavy-Duty Grease Gun Kit LockNLube 8-Piece Quick Connect Accessory Kit Grease Buster
LockNLube Grease Coupler LockNLube XL Grease Coupler LockNLube Heavy-Duty Grease Gun Kit LockNLube 8-Piece Quick Connect Accessory Kit Grease Buster
Customer Reviews
4.7 out of 5 stars
29,246
4.7 out of 5 stars
4,388
4.5 out of 5 stars
1,827
4.7 out of 5 stars
673
4.4 out of 5 stars
571
End greasing frustration, with LockNLube! The ORIGINAL Locking Grease Coupler Two inches of extra reach for recessed fittings! LockNLube grease guns include our Grease Coupler, Swivel and Hose Reach any grease fitting on any machine! Open up clogged grease fittings with the Grease Buster.
The LockNLube Grease Coupler
The LockNLube Grease Coupler

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

Feedback

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.


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Customer reviews

4.7 out of 5 stars
4.7 out of 5
29,246 global ratings

Customers say

Customers like the performance, ease of use, value, and grease of the tools. They mention that it works great for general automotive, heavy equipment, and machine. They also like the quality, and stability. That said, some disagree on fit, and leakage.

AI-generated from the text of customer reviews

2,256 customers mention2,128 positive128 negative

Customers are satisfied with the performance of the coupler. They mention that it works well with their grease guns, is a quality tool, and is easy to reach. The tip works great and holds on to the fitting like a champ. Overall, most are happy with the tool's performance and recommend it to others.

"...I ordered one with my new grease gun and it works very well. Very easy to use and very easy to grease equipment...." Read more

"...it installed on my dewalt 20v grease gun, very easy to install and works great...." Read more

"...Very solid construction that works everytime! Buy once cry once." Read more

"Works great so far the coupler is expensive for what it is but worth the money" Read more

1,437 customers mention1,390 positive47 negative

Customers find the fitting very easy to use. They say it makes it easy to connect and disconnect the fitting. Customers also mention that it's a 30 second install on any grease gun and an amazing time saver.

"...I ordered one with my new grease gun and it works very well. Very easy to use and very easy to grease equipment...." Read more

"...Seals great around the fitting and super easy to connect and disconnect. Comes with a rebuild kit too...." Read more

"...Positive connection and easy release" Read more

"...It’s very easy to use. There were cheaper options out there but based on reviews I spent the extra to get this one and I am NOT disappointed...." Read more

1,283 customers mention1,015 positive268 negative

Customers like the value of the tool. For example, they say it's worth the money, awesome, and saves them sanity. Some are skeptical at first, but the cost was low.

"Well worth the money. I have it installed on my dewalt 20v grease gun, very easy to install and works great...." Read more

"Works great so far the coupler is expensive for what it is but worth the money" Read more

"...Hopefully this will be the end of my greasing headaches, worth the money." Read more

"...2. Sanity savings. This coupler hasn't broken or even gotten stuck on me a single time in weeks. It's also quite satisfying to use.3...." Read more

1,003 customers mention852 positive151 negative

Customers like the grease. They say it makes greasing a lot easier, makes regular greasing pleasure, and fundamentally changes the task of greasing Zerks. The tool bites into the fitting and allows for easily greasing even the balkiest fittings. It bites in and allows you to highly pressurize the grease until it shoots through. It reduces the amount of grease that fails to go in the fitting. It also makes grating certain ports incredibly simpler, and the coupler stays in place.

"...Very easy to use and very easy to grease equipment. Goes on easily and comes off easily. Durable product." Read more

"I used this on my battery grease gun and works good. Makes greasing equipment easy." Read more

"...I had no oozing out the sides so no lost/wasted grease, easy to lock on and easy to take off. It took greasing from a nightmare to a pleasure!..." Read more

"...ask part of my Preventative Maintenance kit has made greasing certain ports incredibly simpler…..would highly recommend for someone who uses Grease..." Read more

479 customers mention432 positive47 negative

Customers are satisfied with the quality of the coupler. They mention that it is well-engineered, heavy duty, and has a lifetime manufacturing warranty. Customers are also impresseded with the fact that it has not broken or gotten stuck.

"...Goes on easily and comes off easily. Durable product." Read more

"...Very solid construction that works everytime! Buy once cry once." Read more

"Seems to be high quality. Comes with rebuild kit. Works well. Just unscrew your old connector and screw this one on...." Read more

"...2. Sanity savings. This coupler hasn't broken or even gotten stuck on me a single time in weeks. It's also quite satisfying to use.3...." Read more

441 customers mention420 positive21 negative

Customers are satisfied with the stability of the tool. They mention that it holds tight, doesn't slip at all, and it stays in place. The tip works great and holds on to the fitting like a champ. Overall, they are happy with the tool and recommend it to others.

"Locks onto every fitting I have put it on. And it does stay on very well. It will leak if the fitting has any sort of dirt on it!..." Read more

"...Installation is a snap and it holds tight to the zerk fitting until I unlock and remove it. It saves SO much time and struggle." Read more

"Locks onto the grease zerks really tight. It even comes with a rebuild kit for the jaws." Read more

"Easy to use, stays on." Read more

592 customers mention206 positive386 negative

Customers are mixed about the fit of the grease gun attachment. Some mention it's a perfect fit and makes greasing almost effortless, while others say that it'll fit on nearly every Zerk fitting. It's easy to put on and easy to take off, but some find that it is too long to fit in a tight area. It is a bit larger than a standard coupler and won't fit into every nook and cranny.

"Love this tip and use it daily, but There are applications where it is too big and have to swap to old standard tip that this tool is too tight to..." Read more

"...As long as the fitting isn’t severely corroded or damaged this seats tight...." Read more

"...pallet jack, couldn't grease load wheels because it was too big to reach the zerk and the coupler was too bulky to grease the bottom of the..." Read more

"...Only drawbacks are it's kind of long so it won't fit in really tight places and it's expensive...." Read more

435 customers mention298 positive137 negative

Customers are mixed about the leakage of the tool. Some mention that it has a really good seal so it doesn't leak unless it's at a weird angle. However, others say that it still leaks and makes a mess. Some say that the coupler releases from the zerk while filling, app 5% of the time.

"...I had no oozing out the sides so no lost/wasted grease, easy to lock on and easy to take off. It took greasing from a nightmare to a pleasure!..." Read more

"...Easy on. Easy off. They don't leak around the Zirk..." Read more

"...but it leaks around the fittings when I tried using it. It still pumps grease into the fitting, but it always leaks out a little dab first...." Read more

"Works just as stated and locks onto grease fittings with no leakage...." Read more

Best One I've Tried
5 Stars
Best One I've Tried
Bought a grease gun at Harbor Freight, because you have to lube old T-Buckets.Coupler that came on it fell apart pretty quickly. I bought a better coupler from HF, it stopped working after I left my gun sitting for a few months.This coupler locks on nicely and worked well for me.
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Top reviews from other countries

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Mike Como
5.0 out of 5 stars Excellent
Reviewed in Canada on March 16, 2024
Cliente de Amazon
5.0 out of 5 stars Excelente
Reviewed in Mexico on October 8, 2021
Katre Ramdas Nagoba
5.0 out of 5 stars ग्रीस लिकेज नही हो सकता
Reviewed in India on March 16, 2021
Mark
5.0 out of 5 stars Far superior to the non-locking adapter that came with the grease gun.
Reviewed in Australia on August 20, 2023
村上邦夫
5.0 out of 5 stars グリス漏れが無い
Reviewed in Japan on March 11, 2022
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