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SGKent  Samba Member

Joined: October 30, 2007 Posts: 42383 Location: at the beach
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Posted: Yesterday 11:23 pm Post subject: Re: Dont Buy This Boot! |
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This one MAY work. If you buy one report back. It would be the larger one for the late 1800 and 2L motors. It is too big for the early shroud if it is truly a /D
https://914rubber.com/alternator-cooling-boot?srsl...r2eCaGODcv
for the record, when I faced this issue originally, I bought many boots from different suppliers. None fit. VW classic had one and I bought it and had it shipped from Germany. It fit like a glove. All the others went back along with notes what they did not fit. Some had the right part number and some had no part number. It was a real disappointment, and I stress each time the alternator comes off etc., because I do not have another one from VW.
With modern 3D scanning, and so many ways to make the right part, I have no idea why we have so much trouble getting a simple part like these.
SGKent wrote: |
I put a lot of time into researching these some years ago. There is NO control by the people making these parts so unless you find a NOS VW one, you may or may not have what you think you have. Literally I had to order and return about 15 of the 55 amp boots to find ones correctly labeled, and the ones that were correct were old stock from VW. My suggestion is find a 70 amp boot and modify the shroud to fit if need be, or make an adapter.
SGKent wrote: |
The general consensus is:
021-903-655 B small hole in fan housing, early T4 55A. Falls out of late engine shroud.
021-903-655 D big hole in fan housing such as late T4, GD, GE engines
022-903-655 70 Amp alternator
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_________________ "Most people don't know what they're doing, and a lot of them are really good at it." - George Carlin |
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blatzer Samba Member

Joined: June 27, 2007 Posts: 441 Location: ATX
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Posted: Yesterday 3:38 pm Post subject: Re: Dont Buy This Boot! |
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it would not could not make the stretch to fit the opening _________________ '70 Beetle- Quincy
'78 Campmobile- Kirby |
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SGKent  Samba Member

Joined: October 30, 2007 Posts: 42383 Location: at the beach
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Posted: Thu Jul 17, 2025 10:42 am Post subject: Re: Dont Buy This Boot! |
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Morning Mike. I would stay with what ever boot was available. A solid connection not losing air would be better than a larger hole and inability to get a boot that fits. They can be a really bad fit if it is not the correct boot for the shroud. _________________ "Most people don't know what they're doing, and a lot of them are really good at it." - George Carlin |
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Wildthings Samba Member

Joined: March 13, 2005 Posts: 52274
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Posted: Thu Jul 17, 2025 9:31 am Post subject: Re: Dont Buy This Boot! |
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Why did VW go to the larger hole and is there any advantage to modifying one's shroud to use the larger diameter boot? My shroud, which came on a 1974 412 engine has the larger hole and is what I have run for most all of the Type 4 miles I have driven. |
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germansupplyscott Samba Member

Joined: May 22, 2004 Posts: 7244 Location: toronto
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Posted: Thu Jul 17, 2025 6:06 am Post subject: Re: Dont Buy This Boot! |
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dodger tom wrote: |
did we ever figure out which boot we shouldn’t buy? |
As far as I know the 022 903 655 boot for the 70A alternator is only being made by Airhead Parts / Ventura Warehouse Group. I am not sure how or why the OP was having difficulty installing* it but in my experience they fit fine. As I posted above this IS a fiddly part to install for a number of reasons, especially if the engine is in the Bus.
*One way I think it could be impossible to install is if you tried to install this boot on an early fan shroud with the 36mm hole. The 70A boot needs a 42mm hole in the shroud. _________________ SL |
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Abscate  Samba Member
Joined: October 05, 2014 Posts: 23775 Location: NYC/Upstate/ROW
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Posted: Thu Jul 17, 2025 1:07 am Post subject: Re: Dont Buy This Boot! |
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dodger tom wrote: |
did we ever figure out which boot we shouldn’t buy? |
They made a movie about it , followed by a TV series.
“ Not today, Komrade” _________________ 🇺🇸 🇺🇸 🇺🇸 🇺🇸 🇺🇸 🇺🇸 🇺🇸 🍊 🍊 🍊 |
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germansupplyscott Samba Member

Joined: May 22, 2004 Posts: 7244 Location: toronto
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Posted: Wed Jul 16, 2025 8:43 pm Post subject: Re: Dont Buy This Boot! |
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raygreenwood wrote: |
Trying to remember....isn't there a different one for certain years of Vanagon?
Also, from what I compared a couple of years back, it appeared to me like whoever was molding some of these washers trying to make one boot that fit both part #s. Ray |
No Vanagon (aircooled) use this part, different setup with a much larger rubber boot to cool the alternator.
I don't think the manufacturer was trying to make a "one-size" boot, probably more likely a misunderstanding of which part fits which model years/engines. The "655B" 55A boot only fits Bus with 1.7l engine but often it's listed as fitting Bus '72-'79 (so 1.7, 1.8, 2.0l) It fits most (all?) Type 4 and some 914. Most Bus need 021 903 655 D since so many more Buses were made with the 1.8 and 2.0 engine.
In my experience the 022 903 655 boot for the 70A alternator fits well. It's not an easy part to install and for one thing you cannot install this without removing the fan and even then it's fiddly to install. _________________ SL |
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aeromech Samba Member

Joined: January 24, 2006 Posts: 17615 Location: San Diego, California
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Posted: Wed Jul 16, 2025 6:27 pm Post subject: Re: Dont Buy This Boot! |
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Welcome home Steve _________________ 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 |
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dodger tom  Samba Member

Joined: March 25, 2013 Posts: 1895 Location: Central Coast, CA, but we're all still Ukrainian and Californian
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Posted: Wed Jul 16, 2025 5:49 pm Post subject: Re: Dont Buy This Boot! |
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did we ever figure out which boot we shouldn’t buy? _________________ 1978 Champaign Edition 2 Westfalia
Would never find the time to keep up another classic air-cooled. |
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raygreenwood Samba Member
Joined: November 24, 2008 Posts: 23095 Location: Oklahoma City
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Posted: Wed Jul 16, 2025 5:42 pm Post subject: Re: Dont Buy This Boot! |
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SGKent wrote: |
I believe that part of the issue is a plethora of years' worth of aftermarket boots were made using wrong molds combinations and part numbers cast in. I base this on the discovery that the originals with VW part numbers fit perfect but aftermarket ones made to look alike were impossible to use. The last NOS ones I found were perfect. There is a thread on this forum about the differences. There are also several different shrouds so boot /A may work well with alternator /B but shroud /E may need different end than boot /A. If everyone agreed to burn what is out there now, and make new molds then the problem could be solved but that will never happen. The bus is using the only NOS one I had left or I would share them. |
Trying to remember....isn't there a different one for certain years of Vanagon?
Also, from what I compared a couple of years back, it appeared to me like whoever was molding some of these washers trying to make one boot that fit both part #s. Ray |
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SGKent  Samba Member

Joined: October 30, 2007 Posts: 42383 Location: at the beach
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Posted: Wed Jul 16, 2025 3:17 pm Post subject: Re: Dont Buy This Boot! |
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I believe that part of the issue is a plethora of years' worth of aftermarket boots were made using wrong molds combinations and part numbers cast in. I base this on the discovery that the originals with VW part numbers fit perfect but aftermarket ones made to look alike were impossible to use. The last NOS ones I found were perfect. There is a thread on this forum about the differences. There are also several different shrouds so boot /A may work well with alternator /B but shroud /E may need different end than boot /A. If everyone agreed to burn what is out there now, and make new molds then the problem could be solved but that will never happen. The bus is using the only NOS one I had left or I would share them. _________________ "Most people don't know what they're doing, and a lot of them are really good at it." - George Carlin |
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blatzer Samba Member

Joined: June 27, 2007 Posts: 441 Location: ATX
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Posted: Tue Jul 15, 2025 5:11 pm Post subject: Re: Dont Buy This Boot! |
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once again the ugly realilty of life after german parts _________________ '70 Beetle- Quincy
'78 Campmobile- Kirby |
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germansupplyscott Samba Member

Joined: May 22, 2004 Posts: 7244 Location: toronto
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Posted: Tue Jul 15, 2025 10:17 am Post subject: Re: Dont Buy This Boot! |
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hazetguy wrote: |
the boot pictured is the 70 amp boot.
022 903 655 is the part number for the 70 amp boot.
the 55 amp boot part number is 021 903 655B. |
55A unit also uses 021 903 655D. In fact I think there might not be any (?) Buses that use "B" or possibly only Bus with 1.7l. The "B" was used on Type 4 cars and early 914. Type 4 also used "655" (no letter) and "655A" but I have no knowledge of how those two version differ from the Bus parts. (914 used "655" and "655B" but not "655A". No clue why)
The "B" part is for a fan shroud with a hole that is 36mm diameter, the "D" is for a shroud that has a 42mm hole. The "022" part number is also for 42mm shroud hole. _________________ SL |
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hazetguy Samba Member

Joined: April 06, 2001 Posts: 10796 Location: iT StiNgeD iTseLf tO dEAd
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Posted: Sun Jul 13, 2025 4:15 pm Post subject: Re: Dont Buy This Boot! |
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blatzer wrote: |
022 903 655 which is 'supposed' to be for the 55A |
the boot pictured is the 70 amp boot.
022 903 655 is the part number for the 70 amp boot.
the 55 amp boot part number is 021 903 655B. |
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blatzer Samba Member

Joined: June 27, 2007 Posts: 441 Location: ATX
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Posted: Fri Jul 11, 2025 6:47 pm Post subject: Re: Dont Buy This Boot! |
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when i looked up the part number the boot came up and it looked exactly like mine
hey ya'll, dont buy that one _________________ '70 Beetle- Quincy
'78 Campmobile- Kirby |
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busdaddy Samba Member

Joined: February 12, 2004 Posts: 52725 Location: Surrey B.C. Canada, but thinking of Ukraine
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Posted: Fri Jul 11, 2025 6:08 pm Post subject: Re: Dont Buy This Boot! |
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That's so not helpful, all you have done is warned people to be extra dissapointed when they open a package after playing aftermarket parts roulette and find a certain part.
How about naming names and including what they call it on thier site?, even better with a screenshot of the page so we all know what to avoid.
Even better with some pics of the alternator and the boot going on. _________________ Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
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blatzer Samba Member

Joined: June 27, 2007 Posts: 441 Location: ATX
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Posted: Fri Jul 11, 2025 4:33 pm Post subject: Re: Dont Buy This Boot! |
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i just siliconed the old one with the clamp- there'n no way i could squish the new one around to make it fit- maybe it was the wrong one but at this point i'm trusting in the old factory model
the boot i bought has a logo like a side view of a hamburger with a v superimposed in front
022 903 655 which is 'supposed' to be for the 55A _________________ '70 Beetle- Quincy
'78 Campmobile- Kirby |
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Willin Samba Member

Joined: October 10, 2019 Posts: 256 Location: Bozeman Mt
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Posted: Tue Jul 08, 2025 6:43 am Post subject: Re: Dont Buy This Boot! |
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A bigger issue you will find, is that it will likely rot in @ a year. Like a lot of new rubber these days.
Keep an eye on it, and report back. Then tell us where you got it.
YMMV _________________ 73 bus. Org. 1700 with dual Weber 40 idfs, bus header with Empi qp muffler, CB magnaspark 2 " ready to run kit". |
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Globedog12 Samba Member

Joined: April 11, 2024 Posts: 173 Location: Atlanta, GA
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Posted: Mon Jul 07, 2025 6:36 pm Post subject: Re: Dont Buy This Boot! |
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Where did you get it? I got mine for a 55 amp on my 76 bus with the larger hole on the fan shroud from 914rubber. It wasn’t fun to install but it fit pretty well after some fiddling. It took me maybe 3 tries to get it right. I was having trouble with the snap ring on the inside staying in place. I finally smeared a nice bit of hi temp silicone on the clip and let it dry overnight. Then I fed the whole boot from inside the fan shroud. _________________ 1976 VW Type 2 Original fuel injection |
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Shonandb  Samba Member

Joined: January 12, 2019 Posts: 2024 Location: Vancouver, BC
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Posted: Mon Jul 07, 2025 2:28 pm Post subject: Re: Dont Buy This Boot! |
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How about these boots?
Seriously, please share the VW part number that we shouldn't buy and also, is this across all VW part vendors or just one/a few? _________________ *******************************
76 Westy with a 2.5L Subaru SOHC + Vanagon (010) Automatic Transaxle
Build & Trip Thread: https://www.thesamba.com/vw/forum/viewtopic.php?t=758760
Previous 1973 Panel Bus:
Click to view image |
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