LockNLube LNL351 14oz Professional Series Lever Grease Gun

LockNLube LNL351 14 oz Professional Series Lever Grease Gun with 20″ Hose & Locking Coupler

Built from customer feedback for everyday reliability, the LockNLube LNL351 Professional Series lever grease gun is engineered for clean connection, quick priming, and easy storage. A unique pressure return system routes line pressure back into the grease cartridge so you can disconnect from clogged fittings without a fight—no mess, no wasted grease. The machined zinc head helps purge air pockets during reloads, while the combo air bleeder valve + Loop & Lock™ storage keeps the tool tidy in trucks and drawers. With a 20″ DIN1283 nylon-braided hose, inline swivel, and the LockNLube® Grease Coupler rated to 10,000 PSI, techs get dependable reach and a leak-free seal on SAE or metric Zerks.

Designed for manual hand-lever operation, the LNL351 delivers a steady 25 strokes per ounce with NLGI #0–2 greases. It accepts 14 oz / 400 g lipped cartridges and self-primes with the integrated pressure return valve, keeping PM routes moving across mixed fleets and equipment.

LockNLube 14oz Professional Series Lever Grease Gun At a Glance

• Pressure Return System: Vents line pressure back to the cartridge for clean, easy disconnects.
• 10,000 PSI rating: Pair of high-pressure gun and LockNLube® coupler handles stubborn Zerks.
• Fast priming & reloading: Machined zinc head and air bleeder reduce air pockets.
• Leak-free locking coupler: Clips on, stays on, and releases with a thumb lever.
• 20″ braided hose + swivel: DIN1283 hose with inline swivel helps align in tight spaces.
• Loop & Lock™ storage: Clips coupler to a parking Zerk and secures the hose for transport.
• Consistent delivery: 25 strokes per ounce with NLGI #0–2 greases.

Markets

• Fleet & Truck Maintenance Clean disconnects on chassis and suspension PMs.
• Construction & Heavy Equipment Reliable pressure for pins, bushings, and attachments.
• Agriculture Handles tractors and implements with varied Zerk access.
• Industrial & Manufacturing Supports preventive maintenance on conveyors and presses.
• Municipal & Public Works Standardizes greasing across mixed equipment fleets.
• Trade Schools & Training Teaches leak-free coupling, pressure relief, and safe priming.

Teams in these settings want a lever grease gun that prevents blow-offs, connects cleanly, and primes fast after a cartridge change. The LNL351’s pressure return system removes line lock so the grease coupler releases without prying, protecting fittings and reducing cleanup. The 20″ braided hose and swivel help square the coupler on awkward Zerks, while the air bleeder and zinc head shorten reload time. With Loop & Lock storage, the gun rides clean in a drawer or service truck, ready for the next round of lubrication.

LockNLube LNL351 14oz Professional Series Lever Grease Gun Features

• Pressure Return Valve: Returns grease from hose to cartridge to eliminate pressure lock.
• Combo Air Bleeder + Loop & Lock™: Faster priming and clean, hose-managed storage.
• Machined Zinc Head: Helps minimize air pockets during loading.
• LockNLube® Grease Coupler (10,000 PSI): Positive lock on SAE/metric Zerks; easy release.
• 20″ DIN1283 Nylon-Braided Hose: Durable, flexible reach with inline hose swivel.
• Manual Hand Lever: Smooth stroke and predictable output with NLGI #0–2 greases.

LockNLube LNL351 14oz Professional Series Lever Grease Gun Includes

• (1) LockNLube® Grease Coupler (rated to 10,000 PSI)
• (1) 20″ DIN1283 Nylon-Braided Hose
• (1) Inline Hose Swivel
• (1) LockNLube Rebuild (coupler service kit)

LockNLube LNL351 14oz Professional Series Lever Grease Gun Specifications

• Model: LNL351
• Rated Pressure: 10,000 PSI (690 bar)
• Delivery Rate: 25 strokes per ounce
• Grease Compatibility: NLGI #0, #1, #2
• Cartridge Compatibility: 14 oz / 400 g lipped cartridge
• Delivery Hose: 20″ (500 mm) DIN1283 nylon-braided
• Hose Thread: 1/8″ NPT
• Dimensions: L 18¼” × W 5¾” × H 2¾” (460 × 145 × 70 mm)
• Weight (Dry): 4.2 lb (1.9 kg)
• Pump Activation: Manual hand lever
• Pump Mechanism: Self-priming with pressure return valve
• Patents: AU2018282292 (others pending)

LockNLube LNL351 14oz Professional Series Lever Grease Gun Warranty

• LockNLube’s 1-Year limited warranty against defects in materials and workmanship.

Why Professionals Choose the LockNLube 14oz Professional Series Lever Grease Gun

Installers choose the LNL351 because the pressure return system ends the pressure-lock struggle on clogged fittings, allowing a clean disconnect and sending unused grease back to the cartridge. The locking grease coupler creates a tight seal so both hands can stay on the lever, and the 20″ braided hose with swivel helps line up on fittings tucked behind guards or linkage. With quick priming, NLGI #0–2 compatibility, and Loop & Lock hose management, crews get predictable pressure, less rework, and cleaner transport—making this lever grease gun a practical choice from shop bays to field service.