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The 3 Best Best Grease Gun CouplerS
A grease gun is a handy tool for lubricating hard-to-reach fittings. The grease gun coupler keeps your workspace and job site clean, and they’re available in various models to suit any grease gun or operating conditions.
Our Top Recommended Products

LockNLube Grease Gun Coupler
Locks on, does not leak
1/8" NPT compatible with all grease guns - battery, pneumatic, manual
Grease goes in, not on, the machine
World's original locking grease coupler.

LockNLube Grease Gun Coupler XL
Rated to 10,000 PSI! Locks on, stays on. Does not leak once locked on.
Hands free - does not pop off under pressure.
Easily release from fittings with the thumb lever, even at extreme pressure.
Fits all standard Grease Guns - 1/8 NPT fitting. Fits all SAE and Metric Zerk fittings. Simply replace your existing coupler.

AZUNO Grease Gun Coupler
Reinforced jaws and quality sealing gasket ensure long lasting and stable performance, prevent leakage even at 12,000 PSI extreme pressure.
Built with premium quality Zinc Coated Alloy Steelfor for all-day performance in the shop or garage, heavier and stronger than any other grease couplers on the market.
What Applications Suit the Use of a Grease Gun?
What Types of Grease Guns are Available?
What are the Factors to Consider when Choosing the Right Grease Gun Coupler?
•How much lubricant do you need to use?
•Where is the job site?
•Why kind of grease gun do you have?
These factors all play a role in determining the type of grease gun coupler you need.
What Do I Need to Know When Purchasing the Best Grease Gun Coupler?
Size of the Threads – Look for a grease coupler that has a 1/8″ NPT thread to connect to your grease gun. This size is standard for most electric, pneumatic, and manual tools.