FS-Series Replacement Rocker Arm OS47161100 for FSa-81 Engines O.S. Engine  [OS47161100]

O.S. ENGINES ROCKER ARM FSa-81
Price:
AUD$19.47
Brand:
O.S. Engine
Model:
OS47161100
GTIN:
4531028145382
Condition:
Brand New
Write a review

Durability and Service Role

Offered under part number O.S. Engine OS47161100, this rocker arm replaces worn FSa-81 style components in FS-series RC engines. It performs the mechanical task of transferring camshaft motion into valve movement and is suitable for routine servicing, repairs, or tuning checks.

The emphasis is on restoring correct function rather than specific size data. Confirm compatibility via the engine part code before fitting; replacement is advised when rocker wear affects valve travel. The part is supplied as an OEM-fit solution to return correct valve actuation on FS-series units.

Installation notes: inspect rocker geometry and valve clearances after removing the cover, fit the replacement ensuring unobstructed movement, then verify engine timing and idle behavior on the model before resuming full use. Use this component only within model engine applications.

How do I know when the rocker arm needs replacing?

Replace when valve movement becomes inconsistent, when you observe excessive play, or during scheduled maintenance if wear is evident. Matching the part code OS47161100 ensures correct replacement for FSa-81 variants.

Will a new rocker arm improve longevity?

Fitting a serviceable rocker arm restores correct valve actuation, which helps prevent secondary wear in the valve train and supports consistent engine operation over time.

Is this part suitable for heavy use?

The OS47161100 is presented as an OEM-fit replacement; regular inspection is recommended under heavy running to detect wear early and maintain reliable valve function.

Copyright © 2008-2026 rcjaz.com.au All rights reserved