For 356 Pre-A thru 356C -- These heat exchangers are for 356 Pre-A thru 356C engines with the US heater setup. These are from the original German manufacturer, made to original specifications and are guaranteed to fit perfectly.

Note: The outer diameter of the tubes on these original Porsche heat exchangers is 38 mm to properly mate to original Leistritz 356 mufflers. Non-original mufflers have 40 mm tubes which will require a spacer sleeve to make up the difference in diameters.