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Silver steel lever grease gun with rigid pipe and black finish

Westward

Westward 4BY73 Manual Grease Gun 14½ oz Cartridge 19¼ in

SKU CH-B9GZ-QTDDV

Delivers up to 10,000 psi through a 6 in rigid pipe using standard 14½ oz cartridges or 21 oz bulk fill

  • Delivers high pressure lubrication with 10000 psi maximum operating pressure
  • Holds standard cartridges using 14½ oz cartridge capacity for convenient loading
  • Provides extended reach through 6 in rigid pipe nozzle for tight fittings
  • Ensures efficient dispensing via 28 strokes per ounce full stroke design
  • Offers versatile loading options supporting bulk filler pump and cartridge methods

Westward 4BY73 Manual Grease Gun

The Westward 4BY73 is a manual grease gun built for automotive and industrial maintenance. It accepts a 14 1/2 oz cartridge or 21 oz of bulk grease. The lever handle delivers full-stroke operation at up to 10,000 psi. This tool suits technicians who need reliable, high-pressure lubrication without pneumatic power.

Installation uses standard cartridge

Load the gun by inserting a cartridge or filling via a filler pump for bulk grease. The rigid pipe extension threads onto the head for a secure fit. A common issue is air pockets trapped during loading, which prevent priming; bleed the head until grease flows steadily. Ensure the follower rod seals properly against the tube wall to avoid bypass.

10,000 psi maximum operating pressure

The 10,000 psi rating determines if this gun can penetrate tight fittings or heavy-duty bearings. At 28 strokes per ounce, high-pressure delivery requires significant lever effort over the 19 1/4 in tool length. Buyers who need continuous high-volume flow or lower hand force should consider pneumatic alternatives. The steel tube and rigid 6 in pipe withstand the rated pressure for demanding applications.

How it compares

Measured against everything we stock in Air & Hydraulic Power Tools, at today’s prices. Recalculated every night.

Price $25.99
Cheaper than about 75% of the 243 comparable items (median $61.99).

Specifications

Product
Brand nameWESTWARD

Questions about this item

How can I verify the gun is reaching its 10000 psi rating after setup?

Operate the lever through a full stroke cycle and confirm firm resistance at the 6 in rigid pipe nozzle; consistent 14½ oz cartridge delivery over 28 strokes per ounce indicates the mechanism is pressurising correctly.

What comes with the 4BY73 and what must I source separately?

The gun body, lever handle, 6 in steel rigid pipe nozzle and filler pump fitting are included; 14½ oz cartridges or bulk grease up to 21 oz capacity, plus any tether accessory, are purchased separately.

Should I choose the 14½ oz cartridge version or the 21 oz bulk-fill option for this 19¼ in tool?

Both capacities are built into the same 19¼ in gun; use 14½ oz cartridges for quick changes or fill the 21 oz bulk reservoir when longer intervals between refills are preferred.

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