FS120 Series M14 Exhaust Header Nut for FS120SE FS120SIII FS155P - O.S. Engine OS45526032  [OS45526032]

O.S. ENGINES M14 EXHAUST HEADER PIPE NUT FS120SE,FS120SIII,FS?\\155P
Price:
CAD$5.19
Brand:
O.S. Engine
Model:
OS45526032
GTIN:
4531028123304
Condition:
Brand New
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M14 header nut for O.S. Engine FS120 line

This M14 exhaust header pipe nut is an RC-scale accessory designed to secure the junction between an exhaust header and muffler on O.S. Engine FS120-series nitro engines. The component's role is straightforward: clamp and seal the header joint to limit exhaust leakage and help keep backpressure stable while tuning.

Installation is simple for most hobby workshops: hand-thread the nut onto the header stub, position the pipe for correct alignment, then tighten gradually to prevent cross-threading. Apply standard RC workshop practice for torque and thread engagement, and inspect for exhaust leaks after an initial run-in. This text treats the component strictly as an RC accessory for model engines and does not imply any real-vehicle use.

Compatibility is confined to the models specified by the manufacturer: FS120SE, FS120SIII, and FS155P. Always verify thread type and header stub dimensions before completing installation.

How should I install this nut to avoid damage?

Start by hand-threading the nut to ensure proper alignment, then tighten in small increments while keeping the header aligned. Avoid forcing the thread if resistance is felt to prevent cross-threading.

Can it be used on engines other than the listed FS120 models?

The nut is specified for FS120SE, FS120SIII, and FS155P. Verify that the engine's header thread and stub match an M14 thread before assuming compatibility.

Any tips to prevent cross-threading during fitment?

Clean the threads, start the nut by hand with the header aligned, and use small, even turns until fully engaged. If torque feels abnormal, stop and recheck alignment.

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