Porsche and the rear window wiper are inexorably linked in the annals of automotive history. And for good reason. While rear wipers were around as an accessory as far back as the 1940s, they never became commonplace. In the mid-fifties, interest picked up a bit in Italy. In 1955, Ferrari installed a pair on a 250 GT Europa by Pinin Farina.
Two years hence, rear wipers made their next appearance at the 1957 Salon de Genève on the new Lancia Flaminia Berlina, also by Pinin Farina. While much praised for their functionality, they once again failed to catch on. This was not surprising: outside mirrors, another aid to rear vision, were still widely (particularly in Italy) considered superfluous.
Nearly a decade later, a wealthy German industrialist contacted the Porsche factory in 1965 about ordering a new 911 with a special request: he wanted a wiper installed on the rear window. Porsche dutifully set about developing a suitable wiper assembly.
When other Porsche enthusiasts saw this gentleman cruising the country’s Autobahnen and parked along the strasse with his custom rear wiper, the factory began receiving an increasing number of requests for similar installations. As a result, Porsche developed a retrofit kit and simultaneously began offering the rear wiper as a standard production option on 1966 models.
The early wiper arm pivot shafts were fitted with inner and outer angled bushings that enabled it to be mounted on the edge of the air intake recess of the existing engine lid. A year later, as the wiper option gained popularity, engine lid pressing dies were modified to incorporate integral mounting bosses for rear wiper installation, eliminating the need for the angled adapter bushings. These were included on each side of the lid to accommodate both left and right-hand drive configurations.
Other manufacturers began to take note of Porsche’s rear wiper and in 1969, Volvo added one to the 145. At long last, the time for rear wipers had arrived.
By the mid-’70s, rear wipers had become ubiquitous on hatchbacks, estates and station wagons. Such body styles were particularly good candidates for them: with a lack of a rear deck (trunk), hatchback rear windows invariably collect more road spray.
Porsche has remained a steadfast devotee of the rear wiper, offering the option on every fixed-roof production model subsequent to the 911 with the exception of the 914, whose long rear deck and recessed vertical rear window obviated the need for one.