A4 Headlights verse S4 Headlights

[Gberg888]

Hey guys,

Id love to joey-mod my headlights but I was wondering if the OEM s4 headlights are blacked out like what alot of people do to their a4 headlights. Does anyone have pics of stock A4 verse S4 headlights?

[itsmatt33]

Hey guys,

Id love to joey-mod my headlights but I was wondering if the OEM s4 headlights are blacked out like what alot of people do to their a4 headlights. Does anyone have pics of stock A4 verse S4 headlights?

youve been around since 2011 not sure why u couldnt google.

There are a number of different headlight configuations for b6's. EU and US spec; grey and chrome; bi xenon and single xenon

a4 US spec typically single xenon

s4 US spec typically bi xenon though sometimes have single xenon


both a4 and s4 come with chrome or grey smoked internals, some people will joey mod both to have a deeper black look.


there are also EU spec headlights which come in chrome or smoked grey with bi and single xenon. the main difference in the cutoff pattern and the lack of an amber reflector

[Gberg888]

I googled but didnt come up with what I wanted.

Thank you for taking the time to help me out!

[Nollywood]

B6 S4 Vs A4 headlamps? Cracking open A4 headlamps to paint the internals is plain daft. B6 headlamps fog up even when they haven't been molested. Opening them up just makes them more prone to misting up, and I feel they look a bit on the tacky side, once they've been painted internally.

I prefer the S4 units, with the grey internals. Subtle, yet very different to the chrome A4 headlamps, or over-painted black internals. I will eventually end up with a pair of OEM S4 Bi-Xenons.

There's just no substitute.

[diagnosticator]

youve been around since 2011 not sure why u couldnt google.

There are a number of different headlight configuations for b6's. EU and US spec; grey and chrome; bi xenon and single xenon

a4 US spec typically single xenon

s4 US spec typically bi xenon though sometimes have single xenon


both a4 and s4 come with chrome or grey smoked internals, some people will joey mod both to have a deeper black look.


there are also EU spec headlights which come in chrome or smoked grey with bi and single xenon. the main difference in the cutoff pattern and the lack of an amber reflector

Because it's more fun to talk about it here.

[itsmatt33]

Because it's more fun to talk about it here.

dont be an enabler lol

[diagnosticator]

B6 S4 Vs A4 headlamps? Cracking open A4 headlamps to paint the internals is plain daft. B6 headlamps fog up even when they haven't been molested. Opening them up just makes them more prone to misting up, and I feel they look a bit on the tacky side, once they've been painted internally.

I prefer the S4 units, with the grey internals. Subtle, yet very different to the chrome A4 headlamps, or over-painted black internals. I will eventually end up with a pair of OEM S4 Bi-Xenons.

There's just no substitute.

If the housings fog up and or accumulate heavy condensation on the inside of the lens, is caused by water leaking into the housing and is trapped in the bottom of the housing making the problem worse. I first discovered the cause of S4 housings accumulating heavy condensation caused by the O ring (not) sealing the vertical adjuster shaft allowing water to leak into the housing. Installing a tighter fitting O ring eliminates that leak. (I sent tighter fitting O rings to a guy in Belgium a awhile ago, per request.) Any leaks into the housing will cause fogging and condensation on the inside of the housing lens. My headlights never fog up or have any condensation because the housings don't leak and stay dry inside, regardless of the weather or temperature variations.

[Axis]

If the housings fog up and or accumulate heavy condensation on the inside of the lens, is caused by water leaking into the housing and is trapped in the bottom of the housing making the problem worse. I first discovered the cause of S4 housings accumulating heavy condensation caused by the O ring (not) sealing the vertical adjuster shaft allowing water to leak into the housing. Installing a tighter fitting O ring eliminates that leak. Any leaks into the housing will cause fogging and condensation on the inside of the housing lens. My headlights never fog up or have any condensation because the housings don't leak and stay dry inside, regardless of the weather or temperature variations.

I changed the o'rings on mine with a 7/16 OD - 5/16 ID and they still fog up. Wondering if it could be trapped humidity or I should look elsewhere. Maybe drop a silica gel pack in them?

[diagnosticator]

I changed the o'rings on mine with a 7/16 OD - 5/16 ID and they still fog up. Wondering if it could be trapped humidity or I should look elsewhere. Maybe drop a silica gel pack in them?

Several possibilities, either the tighter fitting O rings are not tight enough, or there is still water in the bottom of the housing or there is a leak somewhere else, like a cracked back cover or the cover is not seating properly all around. Using a desiccant inside the housing can help, but doesn't actually fix the problem and is only a temporary fix since the silica gel pack capacity absorbing water is limited.

[Axis]

Several possibilities, either the tighter fitting O rings are not tight enough, or there is still water in the bottom of the housing or there is a leak somewhere else. Using a desiccant inside the housing can help, but doesn't actually fix the problem.

May I ask what size you went with? The Silica gel pack was to see if it was only trapped humidity

[itsmatt33]

B6 S4 Vs A4 headlamps? Cracking open A4 headlamps to paint the internals is plain daft. B6 headlamps fog up even when they haven't been molested. Opening them up just makes them more prone to misting up, and I feel they look a bit on the tacky side, once they've been painted internally.

I prefer the S4 units, with the grey internals. Subtle, yet very different to the chrome A4 headlamps, or over-painted black internals. I will eventually end up with a pair of OEM S4 Bi-Xenons.

There's just no substitute.

going to have to disagree with you completely. I picked up a set of single xenon EU units because back then I knew bi xenon would not clear my future big turbo piping setup. I decided to joey mod mine for a cleaner black look frankly most people prefer the look of them as compared to the grey smoked internal and after two rounds of silicone sealant i had no leaks. that was years ago when i was still semi stock. still holding up fine.

http://i1229.photobucket.com/albums/...2b6f06eb_b.jpg

[diagnosticator]

May I ask what size you went with? The Silica gel pack was to see if it was only trapped humidity

To be honest, I don't remember for sure. I do know they are metric with a slightly smaller ID than the OD of the adjuster shaft, and slightly larger OD than the ID of the grove in the housing where the O ring is placed. ( About 11mm OD, 7mm ID 2 or 3mm section width ?) The section width is also wider, but I can't recall off hand exactly the dimensions I used, It's been awhile. It would not be difficult to measure the O ring fitting dimensions, and select several metric O rings to see what size seals properly while still allowing the adjuster shaft to rotate. Using some powdered graphite to lubricate the O ring is helpful too.

The housings are vented, so high humidity inside the housings would have to come from liquid water trapped in the bottom of the housings.

[diagnosticator]

I changed the o'rings on mine with a 7/16 OD - 5/16 ID and they still fog up. Wondering if it could be trapped humidity or I should look elsewhere. Maybe drop a silica gel pack in them?

11mm X 7mm X 2mm O rings are ~ the same OD as 7/16", but are smaller ID compared to the 5/16" (~8mm) of the O rings you fitted.

[Axis]

11mm X 7mm X 2mm O rings are the same OD as 7/16", but are smaller ID compared to the 5/16" (~8mm) of the O rings you fitted.

Ty, I'll give it a shot

[diagnosticator]

Ty, I'll give it a shot

Make sure that the inside (bottom) of the housings are completely dry when you install the metric O rings.

[Gberg888]

Are there any cheaper off the shelf options out there that are not terrible?

http://www.urotuning.com/Black-RS4-l...b6hl-eb-d1.htm

or

http://www.urotuning.com/Black-Ecode...b6hl-eb-90.htm

Thanks