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

O.S. ENGINES ROCKER SUPPORT ASSEMBLY FS-120S
Price:
AUD$23.76
Brand:
O.S. Engine
Model:
OS45561401
GTIN:
4531028123564
Condition:
Brand New
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Rocker Support Component – FS-120S

The O.S. Engine OS45561401 Rocker Support Assembly FS-120S is a replacement component intended to restore the correct rocker geometry on FS-120S engines. It serves as the mounting platform for the rocker set and helps ensure steady valve actuation under standard running conditions.

When servicing the FS-120S, this assembly locates the rocker shaft and interfaces with the cylinder head to maintain tappet contact and predictable valve timing once the engine is reassembled and tuned.

Fitting guidance: this piece replaces the OEM rocker support on FS-120S units and should be installed using the original mounting points and hardware as called out in the engine manual. It is supplied as a maintenance and alignment part rather than a power upgrade.

Specifications

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

Replace the rocker support during comprehensive maintenance on FS-120S engines to reestablish correct rocker alignment and consistent valve operation.

Can I use this support on modified FS-120S setups?

The support is specified for standard FS-120S configurations; for modified heads or custom setups, measure mounting points and confirm compatibility before fitting.

Is any finishing or machining required before installation?

Unless noted by the seller, no additional machining should be required. Clean mating surfaces and use the engine manual's instructions for correct placement and fastener use.

Will this part change how I need to tune the engine?

As a geometry and alignment component, it should not alter baseline tuning significantly, but restoring correct valve alignment can improve throttle response consistency after service.

What details should I give my dealer to order this?

Give the model number OS45561401 and state it is the rocker support assembly for FS-120S engines to ensure accurate ordering from O.S. Engine stockists.

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