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GT550 H4 Headlight
Posted: Mon Feb 06, 2012 1:23 am
by jaycee69
I bought my gt550 a while ago and started restoring it. the question i have is what is the stock diameter of a gt550 light? my bike came with a non sealed beam that says "bosch 1 305 603 012 H4" ive tried looking around for the diameter and any info on it, but no avail.
i also tried measuring but couldnt get an accurate reading. please help. is anyone else using a non sealed headlight?
Re: GT550 H4 Headlight
Posted: Mon Feb 06, 2012 3:55 am
by jabcb
The GT550 & GT750 use the same headlight.
Suzsmokeyallan has a sticky topic with the current part numbers to convert to an H4 headlight. See:
viewtopic.php?f=2&t=3343 (edited to make link visible)
Re: GT550 H4 Headlight
Posted: Mon Feb 06, 2012 9:17 pm
by jaycee69
Was that a suzuki headlight part number? it doesnt really tell me. and does anyone know the diameter of the stock 73 gt550 headlight?
Re: GT550 H4 Headlight
Posted: Tue Feb 07, 2012 4:29 am
by jabcb
The sticky topic provides the current Suzuki part numbers for an H4 headlight that fits the GT750/GT550.
Suzsmokeyallan wrote:H.L conversion
35121-34430 H4 reflector unit, Koito brand (symmetrical flute pattern)
35136-34400 retainer ring for the H4 bulb
35173-20A01 rubber sealing boot
Here is a link for the H4 headlight on Babbit's online part diagram:
http://www.suzukipartshouse.com/#/Suzuk ... 1/09480031
Re: GT550 H4 Headlight
Posted: Tue Feb 07, 2012 10:49 am
by Coyote
7". Just go to the auto parts store and get a standard 7" H-4 halogen headlight. That's what I did on my GT750. Fit like dream and it is a sealed beam unit. There has been some discussion on here about the glass not having the correct angular throw for a motorcycle, but I saw no discernible difference.