BOSCH TWIN S with Spoiler Windscreen wiper front 475/475mm 298S, 19" length, but 20" will also fit
PORSCHE 928 628 901 01
BOSCH part number 653

bis Bj. 07.82 Einbauort vorne Porsche 928 -- 4.4 1977/09-1982/08 4474 ccm, 177 KW, 241 PS
ab Bj. 09.82 Einbauort vorne Porsche 928 -- 4.6 S 1979/09-1983/07 4664 ccm, 221 KW, 300 PS
Einbauort vorne Porsche 928 -- 4.6 S 1983/08-1986/07 4664 ccm, 228 KW, 310 PS
bis Bj. 07.86 Einbauort vorne Porsche 928 -- 4.9 S 1985/09-1994/05 4957 ccm, 212 KW, 288 PS
Einbauort vorne Porsche 928 -- 4.9 S,S4 1986/08-1991/07 4957 ccm, 235 KW, 320 PS
Einbauort vorne Porsche 928 -- 5.0 GT 1989/01-1991/07 4957 ccm, 243 KW, 330 PS
Einbauort vorne Porsche 928 -- 5.0 S4 KAT 1986/08-1991/07 4957 ccm, 235 KW, 320 PS
Einbauort vorne Porsche 928 -- 5.4 GTS 1992/08-1994/07 5397 ccm, 257 KW, 350 PS
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Wiperblade Rear/Hatch

Wiper-Length: 500mm
Fits:
Porsche 924, 924s MY 1976 - 1986
Porsche 928 MY 1983-1995
Porsche 944 MY 1982 - 1991
 

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Use for front windshield Bosch Aerotwin Flatblade wiper 450/450mm AR450S. Quality is outstanding.

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I used these Hybrid design wipers and they look very nice on the car plus have the same effect as the flat blade wipers. A good in between choice if the want to keep a bit of the old style wiper design. They look great and work great. I used the 450mm version.