166-0820 Ignition Coil, Onan. Fits select Onan twin cylinder engines with electronic ignition. Check your manual or part #. Model and spec # of the engine or genset required to look it up. NOT FOR ENGINES WITH BREAKER POINT IGNITION! Electronic Ignition Coil for all P-Series beginning with spec H and early engines retrofitted with the clamp style mounting bracket including BGD, BGE, BGM, NHD, NHE, NHM etc. This coil does not “bolt in”. Coils with mounting ears that bolted in are no longer available. If you are replacing a bolted in style you will need to make up a clamp What you see is what you get. Photo is of actual coil.