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Old 08-16-2007, 05:09 PM
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Aftermarket Alternator for `87 300SDL

Greetings MS --

Are there any options for installing larger capacity alternators on an `87 300SDL? I have two deep cycle batteries and some computer & stereo gear I power and I'm wondering if theres any options for a bigger alternator that can be installed to power all this equipment.

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Old 08-16-2007, 10:59 PM
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Join Date: Jan 2006
Location: Northeast Indiana
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Might want to do a search.

I bought a 90a Bosch for my 87 300D, bolts right in, just ran a heavier wire. Came out of a '93 190E.

The search should turn up a thread where a later-model higher output alternator and some SAAB alternators will fit.

Gone to the dark side

- Jeff
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Old 04-19-2011, 04:57 AM
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I am using aftermarket alternator ever since but i never encounter some installing of large capacity of this or even try to do that kind of project.

Last edited by whunter; 05-30-2011 at 11:09 AM. Reason: removed link
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Old 04-19-2011, 08:47 AM
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Do a search with AL129X. It's a 115 amp alternator that should fit.
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Old 04-19-2011, 10:28 AM
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Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
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X2. Plenty of info on the 115 amp AL-129-X alternator. the 87 - 90 Saabs plus or minus on the years, have the 115 alt. It is usually down low on the right side, accessable from behind the R/F wheel behind the splash shield. and withe the side wise engine. (if you are pulling one from the junk yards)

there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
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Old 04-19-2011, 12:05 PM
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... or pull one from a W140 that is gas powered. I have one on my SDL that puts out 143A.
I'm not a doctor, but I'll have a look.

'85 300SD
'87 300SDL
'89 300E
'90 300SEL
'91 560SEL

Eight others from IH, BMW, GM, Ford, and Volvo.

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Old 04-19-2011, 12:08 PM
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Location: Vulcan, AB, Canada
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Originally Posted by Hit Man X View Post
... or pull one from a W140 that is gas powered. I have one on my SDL that puts out 143A.
Same. Got one from a S600. Swapped the pulley out with an impact wrench. Bought it at a scrapper for $85. I think it came from potomac german parts.
I had the change the wiring for it and used 0 guage welding wire. had to do a bit of fabbing, and pull out the air filter box, and the reg air box.... Had to create a new wire for the excite field as well...
All it takes for evil to prevail is for good men to stand by and do nothing.

Too many people tip toe through life, never attempting or doing anything great, hoping to make it safely to death... Bob Proctor

'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic
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