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

O.S. ENGINES PISTON FSa-72
Price:
NZD$32.72
Brand:
O.S. Engine
Model:
OS44303200
GTIN:
4531028144132
Condition:
Brand New
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Replacement piston for O.S. Engine FSa-72

This component is intended as a direct replacement for O.S. Engine items carrying the FSa-72 code. It is aimed at hobbyists performing engine servicing, and buyers should confirm model compatibility before installation.

Fit this piston when restoring compression, replacing worn parts, or during a focused engine refresh. It acts as the combustion sealing and reciprocating element within the cylinder and will influence compression, ring seating, and overall running character; accurate bore and ring condition checks are important.

Fitting the piston involves normal engine disassembly and careful preparation: keep components clean, check ring orientation, and use appropriate lubrication for the break-in period. Consult the engine service manual for exact dimensions and torque instructions.

Specifications

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

As a factory-branded replacement, this piston is intended for maintenance and repair of compatible O.S. Engine glow units; always verify fitment prior to purchase.

Is OS44303200 compatible with older O.S. engine series?

Compatibility depends on the specific engine model and bore. Check the O.S. Engine parts list or fitment chart and confirm bore diameter before assuming fit.

Any preparation required prior to fitting?

Prepare a clean workspace, inspect the cylinder and ring surfaces for damage, and have correct lubricants ready for an initial running-in procedure. Follow the manufacturer instructions for assembly order and sealing checks.

How will a new piston affect performance?

A new piston can change compression and sealing characteristics, which may require small tuning adjustments. Conduct a staged run-in and fine-tune the fuel mixture and idle after installation.

What inspection signs indicate replacement?

Look for scored surfaces, loss of compression, or excessive ring wear. Verify symptoms against the engine's service guidelines before purchasing a replacement piston.

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