40L 55HZ Carburetor Body OS25881100 O.S. Engine  [OS25881100]

Nitro engine carburetor housing replacement

This O.S. Engine carburetor body is supplied as a replacement component for nitro-powered model engine carburettor assemblies. It carries the size/code 40L 55HZ and model number OS25881100 so you can confirm it matches the item being repaired.

As the carburettor housing, the part interfaces with throttle linkages and the jets, contributing to fuel flow behaviour, idle stability and throttle response through the mid range. It is sold as a single spare rather than an entire carburettor unit.

Fitting requires removal of the carburettor top and correct seating of gaskets and the needle; use your current jets and needle settings as a baseline and inspect for air leaks after refitting. Be prepared to fine tune idle mixture and throttle transition because airflow characteristics can change with a new body.

Choose this part when the original body shows signs of wear or damage, or when you need a direct replacement to maintain tuning consistency and reliability in nitro RC models.