FS-120S Rocker Support Assembly - OS45561401 by O.S. Engine  [OS45561401]

O.S. ENGINES ROCKER SUPPORT ASSEMBLY FS-120S
Price:
CAD$23.30
Brand:
O.S. Engine
Model:
OS45561401
GTIN:
4531028123564
Condition:
Brand New
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Support Component for FS-120S Valve Train

The O.S. Engine OS45561401 Rocker Support Assembly for FS-120S is a direct replacement part intended to restore correct rocker geometry on FS-120S engines. It acts as the structural mount for the rocker elements, helping to maintain consistent valve actuation during normal running.

During a service or rebuild of an FS-120S engine, this support locates the rocker shaft and mates to the cylinder head. The part is focused on stability and alignment so tappet contact and valve timing remain predictable after reassembly.

Installation notes: this item replaces the factory rocker support on FS-120S units and should be fitted to the original mounting points using the engine's recommended hardware. It is intended as a maintenance and alignment component rather than a standalone performance upgrade.

Specifications

  • Item: Rocker Support Assembly
  • Model Number: OS45561401
  • Material: Not specified
  • Compatibility: FS-120S engines

Use this support when carrying out workshop-level maintenance on an FS-120S to re-establish rocker alignment and steady valve operation after rebuilds.

Can the OS45561401 be fitted to other engine models?

The OS45561401 is specified for the FS-120S family; cross-compatibility with other models is not documented and should be confirmed before attempting fitment.

Does the assembly ship with screws and washers?

The listing does not list included fasteners. Use the engine's original mounting hardware or check with the supplier if a hardware kit is required.

Will replacing the support affect engine power?

This part restores correct geometry and supports reliable valve operation; it is not designed to increase power output but it helps preserve predictable engine behavior after service.

How do I order the correct replacement?

Order by quoting the model number OS45561401 and state that it is the rocker support assembly for FS-120S engines to ensure you receive the correct part.

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