Bosch numbers for horns

[Brett Johnson]

Can anyone fill in the Bosch numbers for me in this listing? If there are corrections, please advise.

The first horns were used until chassis number 301224 in May 1965

901.635.102.00 – 390 Hz – Bosch number 0 3???????
901.635.112.00 – 520 Hz – Bosch number 0 3???????

301225 through the end of the 1966 model year

901.635.102.01 – 290 Hz – Bosch number 0 3
901.635.112.01 – 345 Hz – Bosch number 0 320 231 002?

Fanfare horn 1967-1969 model years

901.635.112.02 – 400 Hz, left – Bosch number 0 321 023 002
902.635.102.00 – 335 Hz deep tone, right – Bosch number 0 320 043 017 -- this is not a fanfare horn
901.635.113.02 – 500 Hz, right (comfort group 1969) – Bosch number 0 3

Fanfare horn 1970-1973 model years, both horns are on the left side

911.635.101.00 – high tone 735 Hz – Bosch number 0 321 023 020
911.635.102.00 – low tone 630 Hz – Bosch number 0 321 023 019

[haul]

I am still irritated by this box

[Brett Johnson]

Good box -- all but one now. and it is a tough one...

The first horns were used until chassis number 301224 in May 1965

901.635.102.00 – 390 Hz – Bosch number 0 320 213 005
901.635.112.00 – 520 Hz – Bosch number 0 320 202 020

301225 through the end of the 1966 model year

901.635.102.01 – 290 Hz – Bosch number 0 320 202 023
901.635.112.01 – 345 Hz – Bosch number 0 320 213 009

Fanfare horn 1967-1969 model years

901.635.112.02 – 400 Hz, left – Bosch number 0 321 023 002
902.635.102.00 – 335 Hz deep tone, right – Bosch number 0 320 043 017
901.635.113.02 – 500 Hz, right (comfort group 1969) – Bosch number 0 3???

Fanfare horn 1970-1973 model years, both horns are on the left side

911.635.101.00 – high tone 735 Hz – Bosch number 0 321 023 020
911.635.102.00 – low tone 630 Hz – Bosch number 0 321 023 019

[JT912]

Not sure if this is of any help. A couple pages from my 11/66 parts manual.

[Brett Johnson]

I believe this is complete and correct through 1973. Need additional information on Stritone trumpet horns not made by Bosch fitted to late 1973 cars...

The first horns were used until chassis number 301224 in May 1965 – black with grille opening in front (like 356)

901.635.102.00 – 390 Hz – Bosch number 0 320 213 005
901.635.112.00 – 520 Hz – Bosch number 0 320 202 020

301225 through the end of the 1966 model year – similar appearance to above

901.635.102.01 – 290 Hz – Bosch number 0 320 202 023
901.635.112.01 – 345 Hz – Bosch number 0 320 213 009 -- or is it 435 Hz????

Fanfare horn 1967-1969 model years – black snail shaped

901.635.112.02 – 400 Hz, left – Bosch number 0 321 023 002
902.635.102.00 – 335 Hz deep tone, right – Bosch number 0 320 043 017 – not fanfare, flat without grille
901.635.113.02 – 500 Hz, right (comfort group 1969) – Bosch number 0 321 023 003

Fanfare horn 1970-1973 model years, both horns are on the left side – red, trumpet shape

911.635.101.00 – high tone 735 Hz – Bosch number 0 321 023 020
911.635.102.00 – low tone 630 Hz – Bosch number 0 321 023 019

1972-1973 Switzerland only

901.635.112.02 – 400 Hz, left – Bosch number 0 321 023 002
901.635.113.02 – 500 Hz, right – Bosch number 0 321 023 003

[NorthernThrux]

Dr. J,

Some info on Stritone (and Mixo/Klaxon differentiation) here. https://www.early911sregistry.org/fo...light=stritone The switchover from Bosch seemed to be Dec ‘72-Jan ‘73 with some additional subtleties.

Ravi

[kgtype34]

Hi Brett,
I'm new on the forum and I have a NOS red Bosch fanfare trumpet shape hight tone with the following Bosch number 0 321 023 018
Maybe this information can help completing the list
kind regards
Nico

[Brett Johnson]

Hi Nico,

Interesting -- since the Bosch number doesn't match the ones listed above -- what is frequency on the horn?

[kgtype34]

Do I have to open it up to find out....? I prefer not doing this because it's a nos one....

[kgtype34]

How do I post pictures...maybe that will help