SKU: 25683766533

LockNLube® Grease Gun Coupler

Sale price$26.95 Regular price$29.95
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Description

LockNLube® Grease Gun CouplerEnd greasing frustration with the original locking grease coupler! Locks on, stays on, won't leak. Rated up to 10,000 PSI Easily disconnects, even under pressure. No more broken Zerks 1 8" NPT compatible with all grease guns battery, pneumatic, manual Grease goes in, not on, the machine Works on all Zerk fittings, SAE and metric Available with or without a spare rebuild kit. Patented Locking Technology. US Patent #8955544 As seen on TruckU on the

End greasing frustration with the original locking grease coupler!

  • Locks on, stays on, won't leak. Rated up to 10,000 PSI
  • Easily disconnects, even under pressure. No more broken Zerks
  • 1/8" NPT compatible with all grease guns - battery, pneumatic, manual
  • Grease goes in, not on, the machine
  • Works on all Zerk fittings, SAE and metric
  • Available with or without a spare rebuild kit.
  • Patented Locking Technology. US Patent #8955544
  • As seen on TruckU on the Motortrend Channel!

PRODUCT INFO

End greasing frustration with the LockNLube® Grease Coupler—the ultimate solution for leak-free greasing. Compatible with all grease guns and grease fittings, it locks on, stays on, and won't pop off under pressure. That means less mess, and less wasted grease.

With its unique sliding sleeve and thumb lever, the LockNLube® Grease Coupler easily locks its four steel jaws onto the Zerk fitting, creating a secure, leak-proof seal. And when you’re done, a simple press of the thumb lever releases the coupler—even under pressure. The perfect solution to greasing recessed fittings that make removing your coupler a zero-breaking chore.

The LockNLube® Grease Coupler is fully rebuildable. If it ever starts to leak, just replace the seal and jaws, and it’s as good as new.

It works with all major grease gun brands—Lincoln, Milwaukee, DeWalt, John Deere, Alemite, Pleas, Legacy, and many more—so you know it’s the right fit for your tools.

KEY SPECS

Max pressure 10,000 psi (690 Bar)
Zerk Compatibility Fits all DIN and SAE specification Zerks (grease nipples).
Coupler Thread ⅛” NPT female thread.
Dimensions L: 3½ x W: 5/8 x H: 1⅗ In (L: 88mm x W: 16mm x H: 41 mm)
Diameter (front of coupler) 5/8 in (16 mm). Fits most recessed grease fittings (Zerks). ~1mm larger than standard coupler
Weight 4 oz. (100 grams)
Grease Gun Compatibility Works with all grease gun types: pneumatic, manual, and electric.
Seal Durable nitrile rubber seal for longevity under high pressure
Lock-on Mechanism Four hardened steel jaws are resilient under high pressure. Patent protected.
Patent US Patent #8,955,544
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 25683766533

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4.1 ★★★★★
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Setter mom
Carnegie, US
★★★★★ 5
Great shoe. Great style
Size: 9, Color: Olive
Beautiful shoe. Nice quality. Going to reorder in a Wide. Regular runs too narrow for my feet. Hope the Wide works.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 11, 2025
A
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Amazon Customer
Grantham, US
★★★★★ 5
Best work shoe
Size: 10.5, Color: Grey
Lots of compliments and comfortable too
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Reviewed in the United States on May 14, 2026
A
Verified Purchase
Alyssa P.
Chelsea, US
★★★★★ 3
Good for the price but will not repurchase
Size: 9, Color: Grey
My husband loved these at first. Pros -easy to get on/off -stylish -comfortable -interior/exterior sole construction lasted longer than other more expensive shoes -price is great Cons -after less than a year the mouth of the shoe widened to a point where they slide off way too easy rendering them almost unwearable. -laces cannot be tightened
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Reviewed in the United States on February 9, 2026
N
Verified Purchase
napoleon cruz
Belleville, US
★★★★★ 5
Great !!
Size: 8, Color: Black/Black, Size: 8, Color: Black/Black
This item is awesome! Fits good & lightweight ! .
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Reviewed in the United States on June 3, 2026
C
Verified Purchase
chrisazonian
Dallas, US
★★★★★ 5
Great watch - looks good and keeps good time
I love this thing. Good for a big wrist. Lume holds well and the blue lume looks awesome with the white/blue theme. Holds writhing a couple seconds (2-5) per day, which is pretty excellent at this price point. Would recommend.
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Reviewed in the United States on June 6, 2026

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