Owner reviews for alternator

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Denso

4.4

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3.5

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OEM Toyota: Alternator

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3.7

40 reviews

Alternator Bosch or Denso

Alternator Denso or Duralast

Alternator OEM Toyota or Denso

Alternator Bosch or Duralast

Alternator Denso or VALEO

Alternator OEM Honda or Denso

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Bosch › Alternator

1997SLOW 15 Mar 2012, 00:37

Rating 5.0

i swaped my wimpy 90amp stock alternator for a brand new bosch 120 amp for a vr6 u just have to change the pulley which is easy if you have a impact gun go to a shop with your old and new one and pay the guy 10 bucks and im sure he will do it takes a min everything else is plug and play connector is the same and then all you have is the charge wire that bolts on the alt and goes to the batt ......really super easy

Pros: plug and play, super easy

Vehicle: Volkswagen

OEM Audi › Alternator

steveskinr 20 Dec 2011, 00:52

Rating 4.0

Lights:

I had the alternator changed in one of my Phaetons. The overhead light was fluctuating when the engine was running. The problem was fixed when the tech replaced the alternator under warranty.

Pros: problem was fixed

Cons: overhead light fluctuating

Vehicle: Volkswagen Phaeton

Bosch › Alternator

Glegor 29 Oct 2011, 20:36

Rating 5.0

Lights:

finally, i got tired of re-charging my car, that i finally got rid of that P.O.S. motorola alternator and swapped on a bosch reman.. been golden ever since then.

Pros: been golden ever since

VALEO › Alternator

AudiVDubMan 31 Jul 2011, 22:19

Rating 5.0

Bought the new Valeo, removed the Bosch, and got the Valeo installed. All is well, and I have a rebuildable Bosch 120A on hand-- no core charge w the new Alt.

Pros: All is well

Vehicle: Volkswagen Passat

OEM Subaru › Alternator

snowbarrr 28 Jul 2011, 01:42

Rating 5.0

Warning light:

Since the new alternator cost me $100, and the plugs and cables $50, why not! I've never even changed my oil before, but I just changed my friggin' alternator. Now, my car is running sooo much better, and my check engine light is gone.

Pros: car running much better

Vehicle: Subaru Outback

GENERAL MOTORS › Alternator

B4S 21 May 2011, 00:12

Rating 4.0

Here is a stock Mk2 65 amp alternator (top) and the generic one-wire GM alternator (bottom). They're physically the same size, and the posts are almost identical in length. The GM fan is indented in the center though, and the VW one is flat. I used the GM fan, cause my stocker is disgusting, lol. I swapped the VW hardware/pulley over, since the GM pulley was obviously no good (flat, not offset).

Pros: same size, easy swap

Cons: GM pulley no good

Vehicle: Volvo

Bosch › Alternator

kcsmsm 30 Apr 2011, 15:29

Rating 4.0

Noise:

Had a noise when idling my 2005 passat 2.0 diesel auto. When I turned the wheel at idle the belt would chirp and jump( at the pwr steering pump). Found out I had a defective Schrage(sp?) pulley/clutch on my Bosch 120 amp alternator.

Pros: fixed noise when idling

Cons: defective pulley/clutch

Vehicle: Volkswagen Passat

Bosch › Alternator

DJ_Skrilla 7 Nov 2005, 00:44

Rating 3.0

Lights:

Yeah I just bought a bosch too and it was too wide also I had to hacksaw a mm off to get it to fit in my bracket.

Pros: fits in bracket

Cons: too wide, needs modification

OEM KIA › Alternator

Freekmagnet 28 Jan 2014, 17:55

Rating 1.0

Warning light:
Lights:

I would suggest the genuine Kia one, or a professional grade like NAPA's top line or an AC-Delco. I would avoid anything that says "USA Industries" or "Duralast" on it, based on personal experience. In our shop we have had nearly 100% failure rates with those brands.

Pros: genuine Kia, AC-Delco, NAPA

Cons: USA Industries, Duralast

Vehicle: Kia Optima

Part number: 3730038400RU

Bosch › Alternator

Rado-VR6 13 Dec 2013, 18:58

Rating 2.0

Warning light:

Ok so I exchanged the alternator but just got it on this morning and the alternator i exchanged it with was a bosch which is a direct replacement of the original one i have, i hooked it all back up properly, new charge wire and its running at 11.4 volts now and still drops lol.

Cons: voltage still drops

Vehicle: Volkswagen