Porsche 914 & 914/6 Exterior (Side View) Mirrors

Your Option.
Every production Porsche 914 and Porsche 914/6 car came with a single exterior mirror on the driver's side. There was a very seldom purchased factory option for a passenger side mirror (part number 914 731 040 10), which differed from the left side mirror (part number 914 731 039 10) only in that the glass was slightly convex. The housing is identical - even to the extent that the safety number stamped on the back of most of the later "curved-arm" mirror housings is upside down on the factory-mounted right side mirrors. Both the early and later style side mirrors were symmetrical and constructed to pivot completely, and the factory installed the mount plate for an exterior right side mirror on every Porsche 914 and 914/6 vehicle produced. As a result, it is very easy to add a passenger's side exterior mirror by simply "flipping" a spare stock driver's side mirror and mounting on the left side door after reverse drilling the the sheet metal from the factory mount (although you would need to replace the glass in order to match the factory optioned right side mirror).
Current eBay listings for Porsche 914 side view mirrors (compare
with items on
this page to determine year and ensure authenticity):
Porsche 914 and 914/6 Exterior (Side View) Mirrors on eBay
1970 - early 1972 Porsche 914 & 914/6 Side Mirrors
The 1970 through early 1972 Porsche 914 and Porsche 914/6
side mirrors, part
number 914 731 039 10 (left) and 914 731 040 10 (right), have
non-magnetic 300 series alloy stainless steel
housings attached to a 90 degree angled stainless steel alloy arm via a
spring-tensioned pivot (the information on the metal composition was
submitted by a machinist who is a 914 original owner). The
mounting base attached to the upper arm stud is chromed steel
that tends to corrode, pit or bubble. The glass fits into a plastic
inner holder and is secured with a black, plastic snap-in retainer.
These early mirrors are smaller than the later style by a few
millimeters in both height and width.
Late 1972 - 1976 Porsche 914 Side Mirrors
The late 1972-1976 Porsche 914 exterior mirror bears identical
part numbers to the earlier style, but there are three subtle
differences. As
noted above, the later mirror is slightly larger. "MTP-RT210" is
stamped into the back of the housing on most later models, while the
earlier mirrors have no markings. Most noticeable, however, is that the
"arm" of the later mirrors is curved instead of angled.
Note, however, that the mounting plate of both the early and later
style side mirrors is identical, allowing them to be interchanged. All
Porsche 914 side mirrors employ a plastic gasket between the mount
plate and door to protect the paint and
buffer vibration.