O.S. Engine OS26903000 65AX Cylinder & Piston Assembly  [OS26903000]

O.S. ENGINES CYLINDER AND PISTON ASSEMBLY 65AX
Price:
£40.24
Brand:
O.S. Engine
Model:
OS26903000
GTIN:
4531028147515
Condition:
Brand New
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65AX Engine Cylinder & Piston Assembly

This replacement cylinder and piston assembly is specified for the 65AX designation and serves as the main reciprocating component to restore compression and combustion stability in engines where the original parts are worn.

Supplied as a single assembled unit to simplify servicing, replacing the cylinder and piston is a standard overhaul procedure that can affect ring seating and overall combustion characteristics. On installation, check shaft and crank alignment, inspect mating surfaces for damage, and observe the engine manufacturer's break-in and tuning recommendations to ensure dependable operation.

Consider this assembly part of the engine's sealing and combustion system when planning tuning work. After replacement, re-assess needle settings and idle while running, and monitor oil and fuel consumption for indications that the new parts are bedding in.

Specifications

  • Item Cylinder and piston assembly
  • Material Not specified by source
  • Model Number OS26903000
  • Compatibility 65AX engine designation

Opt for this assembly when compression loss is traced to worn cylinder or piston components, and always complete a proper break-in and tuning check after replacement.

Can I confirm compatibility before ordering?

Verify that the engine's parts list or service manual references the 65AX designation; the OS26903000 assembly is intended for engines carrying that designation.

What steps are recommended during overhaul when fitting this assembly?

During overhaul, clean mating surfaces, inspect the crankcase for damage, check the crankshaft runout, and fit the new assembly with correct seals and alignment before performing break-in procedures.

How can I spot cylinder or piston wear?

Look for scoring on the bore, reduced compression feel, increased oil or fuel consumption, and inconsistent idle or midrange as signs that the cylinder or piston may be worn.

Should a trained technician fit this part?

While an experienced hobbyist can perform the replacement with care, complex overhauls or uncertain fitment cases are best handled by a qualified technician to ensure alignment and sealing are correct.

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