BMW-132 (Aviation Museum, #5)

There were different variants of the engine. The ignition components (distributor and magnetos) were always at the back. Each cylinder always had two spark plugs. However, the configuration of the rings for the ignition cables was different: rear, front and mixed (front and rear). I chose the first variant because it differs from the order of the two other engines in the hall.  

Exhibit #5 (BMW-132) for the Hall 1 completed.