CSM4X17 Silencer Mounting Screw Compatible with 855 108FSR - O.S. Engine OS29025400  [OS29025400]

O.S. ENGINES SILENCER MOUNTING SCREW CSM4X17 855 108FSR
Price:
NZD$8.74
Brand:
O.S. Engine
Model:
OS29025400
GTIN:
4531028118041
Condition:
Brand New
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Mounting screw details for RC exhaust assemblies

The manufacturer part code CSM4X17 appears with identifiers 855 and 108FSR in the original product designation. This fastener is made for attaching a silencer to an RC engine exhaust, helping to keep the silencer aligned despite vibration and adjustments during setup.

Fit this screw as a like-for-like replacement when your spare parts list references the same code. Proper thread engagement and correct seating are important to maintain the exhaust alignment; check the part code and inspect threads before reuse.

The component serves a maintenance and stability role rather than changing engine output: it secures the silencer so exhaust sealing remains consistent while tuning. Regular inspection will help avoid loosening or misalignment during operation.

How do I install the CSM4X17 screw correctly

Start by cleaning the threads, align the silencer flange, then engage the screw by hand before tightening to avoid cross-threading. Ensure it seats flush without over-torquing.

Can this replace a lost silencer screw on my model

If your parts diagram lists CSM4X17 or codes 855/108FSR, this screw is the correct replacement. Always verify the printed part string before fitting.

What indicates the screw needs replacing

Signs include damaged or flattened threads, stripped heads, or inability to seat the silencer tightly. Replace if any of these are present to maintain exhaust alignment.

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