If you have other questions that were not addressed, please visit our product page for more information here or contact us for more information.

Q: What comes included with the G Coupler grease coupler?

You will receive the G Coupler grease coupler with a seal kit already inserted into the grease coupler. A free spare seal kit is also included with your order.

G Coupler grease coupler - Big Gator Tools
G Coupler grease coupler - Big Gator Tools

Q: What are all the features of the G Coupler grease coupler?

1. Works with all grease gun types: pneumatic, manual and electric (battery).

2. Works on all SAE and metric (DIN) specification Zerks (grease nipples).

3. Available in 1/8" NPT

4. Works with all grease gun manufacturers, including: - ADT, Alemite, Allstar, DeWalt, Draper, Grainger, John Deere, Legacy, Lincoln, Lumax, Macnaught, Milwaukee, Plews lubrication (Edelmann), PowerLuber, Sealey, Sealey, SKF, UMETA, Wilmar and many others.

5. Simply depress trigger to release. No more stuck couplers.

6. No need to hold while greasing. Lock-on and free up both hands to operate your grease gun.

7. Durable, specially formulated rubber seal for longevity under high pressure.

8. Four hardened spring steel jaws are resilient under high pressure.

9. Check valve to reduce leakage.
10. Suitable for high-pressure, heavy duty grease maintenance applications.

G Coupler grease coupler - Big Gator Tools

Q: Is there a warranty for the G Coupler grease coupler?

Yes, there is a 30 day warranty on workmanship and materials.

Q: How well does the G Coupler grease coupler handle 000.00 grease?

Yes, you can use the G Coupler grease coupler with (NGLI) 000.00 grease. Disconnection may be slightly messy though.

Q: Is the G Coupler grease coupler a USA made tool, like the V-DrillGuides or V-TapGuides?

No, the high quality G Coupler grease coupler is made in South Africa.

Q: Can I use the G Coupler grease coupler to lubricate in very tight places or in recessed fittings?

As a high pressure, heavy duty grease coupler, it will fit into the majority of recesses (the diameter on the front is 0.63 inches (16 mm), only 0.04 inches (1 mm) greater than most standard push-on couplers).

The diameter of the G Coupler coupler is smaller than a number of the most common heavy duty grease couplers.

While the G Coupler grease coupler is compatible with most recesses and nipple placements, it may not fit into very tight or some recessed spaces.

Accessibility to the odd hard-to-reach zerk, can often be resolved by fitting a different variation of Zerk grease fitting. One with a longer neck, shorter neck, 45 degree bend, right angle (90°) bend, etc. These fittings are usually low cost items that are very easy to replace.

We have had a couple of questions about this, but in the end our customers still believe that this small shortcoming is greatly outweighed by the many benefits.


Q: How does the G Coupler grease coupler compare to other push-on grease couplers?

Frequently Asked Questions


G Coupler grease coupler questions:


Q: What are some of the dimensions of the G Coupler grease coupler?


The diameter of the tip of the coupler is 0.63 inches (16 mm).

The length of the slide body is 0.59 inches (15 mm).

The length of the coupler body is 3.07 inches (78 mm).

The length of the coupler from tip to release handle is 3.46 inches (88 mm).


Q: What is the highest pressure I can use with the G Coupler grease coupler?

The G Coupler grease coupler can be used on heavy-duty industrial pumps and pneumatic grease pumps with pressure ratings up to 690 bar (10,000 psi).


*Ensure that all your fittings and pipes are well maintained and correctly specified for the pressure you will be using. A hose that burts under high pressure can cause grease to penetrate your skin. This is a serious health risk.


Q: What grease guns does the G Coupler grease coupler fit onto?


Here's a list of compatible grease guns that the G Coupler fits onto:

- ADT
- Alemite
- Allstar
- DeWalt
- Draper
- Grainger
- John Deere
- Legacy

- Lincoln
- Lumax
- Macnaught
- Milwaukee
- Plews lubrication (Edelmann)
- PowerLuber
- Sealey
- SKF
- UMETA
- Wilmar
- Almost any grease gun should work


The G Coupler grease coupler can be used on manual lever action, pistol grip, trigger action, battery powered (cordless) and pneumatic (air operated and powered) greasing equipment.