Owner reviews for alternator

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Denso

4.4
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Denso

3.5
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OEM FORD

5.0
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OEM KIA Alternator

I own a rio 2013. di ko gets bat marami parin nagsabi ng walang parts available sa kia e nasa shopee lang lahat. madali lang rin ayusin, naka DIY na ako nagpalit ng alternator, clock spring, ignition coils at eps motor. halos lahat ng fix nasa youtube lang.

Pros: parts available, easy to repair
Vehicle: Kia Rio
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Bosch Alternator
Compy486
Rating 4.0
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I just had to swap my alternator today on my MK7. Mine was Valeo but I could only find a Bosch locally, I decided to give it a shot and it worked just fine. Just a PSA for anyone in the same situation, they are both the same barring a slightly different orientation of the plug on the back.

Pros: worked just fine, compatible
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OEM Honda Alternator

I have a 2007 CRV with 132,500 The car has been reliable and I'm currently dealing with replacing parts due to the age. Since the last quarter of 2025 I replaced the tensioner/belt,mid pipe, muffler/hardware and alternator.

Pros: car has been reliable
Cons: replacing parts due age
Vehicle: Honda
Mileage: 213240 km
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Denso Alternator

I have a 2005 XLS and upgraded to the 130a one, no issues at all. I bought a Denso (oem) one on rockauto for $170, sent my old one and got $40 back. The Toyota one (also denso) was like $450. The 130a was actually cheaper than the 100a too. Did it myself in about 3 hours

Pros: no issues, cheaper than OEM
Vehicle: Toyota
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OEM Toyota Alternator

My last OEM Toyota alternator made it to 250K miles. My future non-Toyota ones failed because they were cheap remanufactured ones and later I found a failing harmonic balancer that was putting extra pressure on bearings of the alternator

Pros: long lifespan (OEM Toyota)
Cons: failed (non-Toyota remanufactured)
Vehicle: Toyota
Mileage: 250000 km
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OEM Mazda Alternator

Mazda's DO NOT like aftermarket alternator. Most don't work out of the box. You need to get a genuine Mazda alternator.

Pros: genuine Mazda alternator needed
Cons: aftermarket alternator bad
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Denso Alternator

As someone pointed out, don't expect the 150 dollar alternator to last that long. I threw on my 4runner a few months back because that's all that was in stock locally and I'm gonna have to replace it again, it's already whining. I'd definitely spend $350 or whatever it is on a denso unit

Pros: Denso unit is better
Cons: cheap alternator failed
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Owner reviews for alternator

As of March 2026, PartReview has 909 reviews across 50 manufacturers for alternator. 11 of them have enough reviews to participate in the ranking of this part.

Popular manufacturers of alternator

The most popular manufacturers of alternator on PartReview include:

  1. Denso - 218 reviews. PR Score: 81, average rating: 4.0.
  2. Bosch - 204 reviews. PR Score: 72, average rating: 3.7.
  3. Duralast - 54 reviews. PR Score: 43, average rating: 2.6.
  4. OEM Toyota - 40 reviews. PR Score: 73, average rating: 3.7.
  5. VALEO - 39 reviews. PR Score: 70, average rating: 3.7.

Most opinions about performance and characteristics of alternator are collected on these pages.

Top manufacturers of alternator

There are enough reviews to build a ranking. Top manufacturers of alternator:

  1. Denso - 81% positive votes. Balance: +423 votes
  2. Bosch - 72% positive votes. Balance: +294 votes
  3. OEM Toyota - 73% positive votes. Balance: +60 votes
  4. VALEO - 70% positive votes. Balance: +51 vote
  5. AC DELCO - 72% positive votes. Balance: +45 votes

Comparisons of alternator manufacturers

As they say, everything is known in comparison — including alternator. On PartReview you can see which is better:

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