O.S. Engine OS44303200 FSa-72 Service Piston Replacement  [OS44303200]

O.S. ENGINES PISTON FSa-72
Price:
AUD$27.34
Brand:
O.S. Engine
Model:
OS44303200
GTIN:
4531028144132
Condition:
Brand New
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FSa-72 piston for O.S. Engine models

Offered as a replacement piston for O.S. Engine components with the FSa-72 designation, this part is targeted at technicians and hobbyists carrying out engine upkeep. Confirm that your engine model is listed as compatible before installing.

Install this piston to recover compression, swap out worn internals, or as part of a targeted engine refresh. As the sealing and reciprocating element it affects compression, ring seating, and engine responsiveness; a correct bore and sound ring condition are crucial for reliable operation.

Fitting requires conventional engine teardown, attention to cleanliness, correct ring alignment, and lubrication during the break-in period. Always use the manufacturer service manual for torque and measurement references rather than generic tips.

Specifications

  • Item Piston
  • Material Not specified by manufacturer
  • Model Number OS44303200
  • Compatibility For O.S. Engine models, refer to manufacturer fitment chart

This piston is a factory-designated replacement part intended for servicing and repairs on compatible O.S. Engine glow engines; check fitment details before purchase.

What wear indicators should prompt replacement of the piston?

Replace the piston when you observe scoring, gouging, or a measurable drop in compression. Excessive ring wear or deformation are also clear signs that a new piston is needed.

Does piston material need special handling?

The manufacturer does not specify material here; handle the piston like any precision engine part: avoid contaminants, prevent scratches, and use suitable lubricants during assembly and initial running-in.

How should I approach break-in after fitting?

Perform a controlled break-in with light lubrication and monitoring. Start with conservative running conditions and inspect for proper sealing and oiling before full-power operation.

Can I rely on a visual check alone to confirm fit?

Visual checks help, but always verify bore diameter and ring seating against the engine service manual to ensure precise fit and correct clearance before completing installation.

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