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Westward diesel piston ring compressor with spring steel bands and square handle

Westward

Westward 1UBG2 Diesel Piston Ring Valve

SKU CH-QFJ2-C7BBA

A spring-steel compressor for installing diesel piston rings on trucks and tractors, covering bore diameters from 89 mm to 178 mm with a square handle and four tension bands

  • Installs pistons on trucks and tractors
  • Fits pistons from 3 1/2 to 7 inches diameter
  • Spring steel bands maintain even compression
  • Square handle gives firm grip during use
  • Single-piece tool includes four tension bands

Westward Diesel Piston Ring Valve

The Westward 1UBG2 is a new compressor valve designed for installing pistons on diesel engines. It fits piston diameters from 89 mm to 178 mm, covering trucks and tractors. The assembly uses spring steel tension bands for durability. A square handle is included for operation.

Mechanics working on heavy diesel engines

This valve suits technicians who need to compress rings on large-bore pistons up to 178 mm. It is not intended for gasoline engines or smaller bore sizes below 89 mm. Buyers needing multiple units should note the pack contains only one piece. Workshops requiring a full ring compressor set will need additional tools.

Spring steel bands and square handle

The tool requires a compatible piston and cylinder bore within the stated range. Its spring steel construction resists deformation during repeated use. The included handle allows controlled compression without extra hardware. It frees up the technician's other hand for piston alignment during installation.

How it compares

Measured against everything we stock in Plumbing Valves & Valve Assemblies, at today’s prices. Recalculated every night.

Price $35.99
Cheaper than about 59% of the 720 comparable items (median $47.49).

Specifications

Product
Brand nameWESTWARD

Questions about this item

What piston diameter range does the Westward 1UBG2 compressor handle?

The compressor fits pistons from 89 mm to 178 mm, covering 3 1/2 to 7 inches for truck and tractor engines.

Can the spring steel tension bands be used with worn cylinder walls?

The four spring steel bands conform to the cylinder bore, but excessive wear beyond the 89 mm to 178 mm range will prevent proper ring compression.

How do I verify the rings are seated after using the square handle?

After tightening the handle, the bands should sit flush around the piston with no gaps, allowing the piston to slide into the cylinder with firm, even resistance.

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