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The Original Grease Buster® - Clear out clogged grease fittings.


47 reviews
Open up clogged grease fittings with the Grease Buster. Simply fill with a solvent and tap the piston with a hammer. The updated design includes a textured grip and two o-rings. Manufactured by LockNLube in the USA. 
  • Cleans and flushes out old dried grease from fittings, pins, shafts, bushings, and joints.
  • Uses penetrating fluid and hydraulic pressure
  • Reduces downtime. Much cheaper than new bearings!
  • Hose extension and pneumatic piston available
  • Not for use with sealed bearings.


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The Original Grease Buster® is the toughest tool on the market to open clogged grease fittings.

The Original Grease Buster® is the most rugged version of his products, fit for heavy use and compatible with the pneumatic piston.

The Grease Buster’s piston, included with the product, is hollow and should be filled with a liquid (not aerosol) penetrating oil. Seat the piston in the Grease Buster, attach the coupler to your Zerk fitting, and tap the piston with a hammer. This forces the penetrating oil into the fitting and loosens it for regular greasing.

For customers with a pneumatic hammer, they might prefer using the pneumatic piston (sold separately) instead of the standard piston. Note that the pneumatic piston is only compatible with the Shop Sized model, not the Regular Size version.


The Grease Buster is the answer to a problem that many people have lived with for a long time. Plugged-up grease fittings and bearings are a problem common in machinery. One greases a machine and the grease can dry out before the machine is used again. The tool consists of a heavy-duty adjustable hydraulic coupler, cylinder, and a piston with a knob.

Instructions: Remove the piston. Fill the cylinder by pouring in penetrating oil. Start the piston back into the cylinder. Place the tool onto the grease fitting and by tapping the piston, forcing the solvent into the fitting and or bearing. The key work is TAP. Using a lightweight hammer and small, rapid taps, work the penetrating oil into the fitting. You’re trying to dissolve the clog, not blast it out of the way. Repeat if necessary.


LockNLube provides a full 30-day money-back guarantee on all products purchased from its website. If you are dissatisfied with your purchase, you can return it to us by shipping the item back within 30 days of purchase. Once we receive your return, we will refund you the full purchase price of the item.

Please ensure that the item you are returning is repackaged securely, with all its component parts included. Please also include any documentation that came with your original order, such as a packing slip or order confirmation.


Return items to us by shipping to:

Lock and Lube
12 Commerce Ave. Suite #3
West Lebanon, NH 03784

For more information, please call 603.795.2298. We’re a small business and we’ll pick up the phone in New Hampshire when you call.


  • Opens clogged grease fittings
  • Uses penetrating oil and hydraulic pressure
  • One Year Warranty with normal use
  • Reduces downtime, cheaper than new bearings
  • Compatible with the Hose Extension and Pneumatic Piston
Customer Reviews
5.0 Based on 47 Reviews
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Jerry G.
United States United States

Original Grease Buster

Does what it is designed to do, I used it on the wet bolts on my RV's suspension, the factory grease got very hard. It takes patience to work the old hard grease out but it is worth the time. The funny part of this is that this was on a 2020 model 5h wheel no telling how long those wet bolts laid on a self with old grease in them.

Lloyd P.
United States United States

Clogged grease fitting on excavator.

3 out of 15 fittings were clogged and the grease buster worked like a champ and all 3 were freed up.

Soybean F.
United States United States

Works Great!!!

Grease fittings are on the inside of the front wheels of my riding lawnmower and to remove a fitting to unclog it you would have to remove the wheel from the axil, time consuming. Used my Lock-N-Lube Grease Buster today and the problem was solved in less then 5 minutes. Great tool worked as advertised. Would buy another one for sure.

David F.
United States United States

Stuck zerk no more

I used my new Grease Buster for the first time this week. After a few taps with my 6oz hammer, the blockage cleared. It worked exactly as advertised, was easy to use. I am --almost-- looking forward to another blockage :)

Jason D.
United States United States


I found this item on a social media ad. I was skeptical at first but when I received it I was impressed with the superior quality of this American made product! I didn't need it when I bought it. A week after I bought it, I encountered a frozen zirk. This thing performed just as advertised! I used PB Blaster as a solvent. The tool has a 4 jaw clamp that stays firmly in place and I used a lead hammer to drive the solvent through the frozen fitting. Amazing!

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