1977 Baywindow -Need help finding the correct Booster and MC

[zepare]

Hello, I'm trying to find the correct Booster and MC that will replace the ones shown in the photos. The Booster I need to replace is ATE 03.6852-0501.4
I'm considering this from WW. https://www.wolfsburgwest.com/cart/DetailsList.cfm?ID=211612103
As far as the MC goes, I don't know which to go with. Brazilian or German?
Any help, guidance, recommendations will be much appreciated.
Thank you.

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66 ghia vert.
77 Scooby van.

[kreemoweet]

The ATE replacement part # for that booster is 03.6850-0502.4, I could only find a few European online auto parts websites mentioning it.

The one from WW is a Chinese reproduction; some apparently found it to be OK, but others (including myself) did not. There are a number of reviews here on thesamba.com.

You might be able to have your booster refurbished/rebuilt, many here have taken that route and been quite satisfied. And also the contrary.

I've used both Brazilian (Varga) and ATE (sometimes called "german" but actually made in something like Czech Republic) master cylinders, they both worked well, but I prefer the ATE because it has the drain/vent channel between the front piston seals. There's also a much cheaper Chinese "ATE" master cylinder available here and there. I've had one in my hands, and it looked OK, but never used one.
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'67 bug: seized by the authorities
'68 bug: seized by the authorities
'71 kombi: not yet seized by the authorities

Stop dead photo links! Post your photos to The Samba Gallery!

[VWSunny72]

I have a reproduced brake booster that I bought from Bus Depot that I never used and was going to list in the classifieds.

DM me if your're interested.
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I am owned by a 1972 Westy named Sunny. She has a 1979 2.0L engine w/ dual Weber IDF 40s.

[aeromech]

My understanding is that 1971&1972 boosters are the same. Then from 1973 the booster changed and became slightly thicker. The master cylinder is the same from 1971-1979. I know you can buy an aftermarket booster for the early bus. I don’t know if they are available aftermarket for the 1973-1979
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound

[kreemoweet]

The early and late boosters are interchangeable. I've used both on my '78 axle, and could tell no difference in function. The stock late one had a very slightly increased "boost" ratio, and a very slightly increased diameter, so a late booster on an early axle beam will require a tiny bit of clearancing on a non-critical area of the inner axle beam flange. The early vent hose had a slightly larger diameter. AFAICT, the aftermarket early and late Chinese units are the same, except one comes with a little piece of plastic hose sleeving to adapt the vent hose connection.
_________________
'67 bug: seized by the authorities
'68 bug: seized by the authorities
'71 kombi: not yet seized by the authorities

Stop dead photo links! Post your photos to The Samba Gallery!

[aeromech]

I believe that the mounting bolt patterns are slightly different but can be made to work
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound

[germansupplyscott]

[aeromech]

It’s good to have you back Scott
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound