F120AC Back Plate Replacement YSF1326A - YS Engine  [YSF1326A]

Service back plate for F120AC engines

Supplied as a replacement component, this back plate assembly fits F120AC-designated engines and carries the YS Engine reference YSF1326A. It is intended to re-establish correct sealing surfaces and mounting points without modifying the engine layout.

Focus is on compatibility and service role; it is not described as a performance accessory. Replace the back plate when you encounter thread damage, leaking seals, or distorted mounting areas. Check all contact surfaces and fastener condition during the swap to preserve assembly alignment.

Installation advice: remove the powerplant from its mount where necessary, retain original screws for reference, degrease and clean mating faces, and follow standard RC engine service precautions. This product is presented as the rear back plate assembly and does not include internal components or extra consumables unless noted.

Select the YSF1326A back plate assembly to restore the service function of an F120AC RC engine, confirming thread and sealing surfaces during fitment for dependable operation.