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Bosch H1 Question
Hi all,
I have a pair of Bosch 0301811004 headlights, which I've seen many times before, but these have plastic lenses. Anyone know what the story is with this? Thanks, Bob  
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02-08-2025, 02:16 PM
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Afaik H1 were used on longhood SWB 911/912 in the early days prior to 1970/1972. Then Porsche switched to H4 headlights. At least in Germany and EU. On my SC the fog lights are H3 iirc. The lenses were made of glass all the time up to 964 I think. 993 don't know.
H1 had two separated bulbs for low and high beam, H4 a single bulb for both low and high beam. Available again from Bosch, made of glass. Part no. 91163111100 Thomas
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1981 911 SC Coupé, platinum met. (former tin (zinc) metallic), Bilstein shocks, 915/61,930/16,WebCam20/21, Dansk 92.502SD,123ignition distributor with Permatune box as amplifier,Seine Systems Gate Shift Kit,Momo Prototipo. Want to get in touch with former owners of the car. Last registration in US was in 2013 in Lincolnshire/lL. Last edited by Schulisco; 02-08-2025 at 03:06 PM.. |
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02-08-2025, 02:47 PM
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My understanding is the H1's were optional on '68S and T's and E's the year after. My question is regarding the plastic lenses. I'm thinking they were aftermarket, but that's just a guess. I'll likely just restore with glass lenses.
Cheers, Bob |
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02-08-2025, 05:21 PM
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Join Date: Dec 2002
Location: Westchester, NY
Posts: 361
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Bosch H1 Question
Eric at Auto Foreign Service makes beautiful Borosilicate H1s. Perhaps he will sell you a set of lenses (his chromed brass bezels are jewelry as well…
 Sent from my iPhone using Tapatalk
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996 Coupe, 84 Euro Carrera, Cayenne S, BMW CS 30, 72 2002 Ti (gone) 72 911 Hot Rod, Healey 100M, Giulia 1300 Ti, Merc 280SE4.5 Colorado Grand 03-04-05-07-08-11-17-18 Tour Auto 04-05 RG #650 |
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02-12-2025, 06:56 PM
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Porsche 911 SC
