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Spare parts reviews ➔ All comparisons ➔ Bosch ➔ OEM Mazda

Alternator Bosch or OEM Mazda

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Bosch
OEM Mazda
Bosch › Alternator
Compy486
  • Warning light:
  • Lights:
Rating 4.0

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 Mazda › Alternator
TeknicZ10
  • Warning light:
Rating 4.0

Our 17 has 205,000km so far. Has been great. Have gone through 4 sets of rear brakes, maybe 2 front but it might only be one, had to recently replace the alternator.

Pros: has been great
Vehicle: Mazda
Mileage: 205000 km
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Bosch › Alternator
Eric D
Rating 5.0

In place of the Valeo alternator I installed a Bosch VR6 120 amp alternator with a Bosch ABA alternator pulley (its 5 ribs versus 6 ribs of the VR6).

Pros: increased amperage
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Bosch › Alternator
Gold-Consequence1750
Rating 4.0

I just went over 195,000 miles while I've driven it over 26,000 miles this year with the only failures being the original 15 year old Bosch alternator and the spark plugs needing to be replaced.

Pros: motor itself is reliable
Cons: alternator needed replacement
Mileage: 313821 km
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OEM Mazda › Alternator
nothardly_yes
  • Lights:
Rating 1.0

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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Bosch › Alternator
Former-Primary-3186
  • Warning light:
Rating 1.0

Literally just put a FCP Bosch remanufactured 2 pin alternator in our 530 last week--it doesn't work at all. Communicating with FCP currently to send it back and get a replacement, but I'm not happy about it. I was told that Bosch was the one to go with for best quality, but now I'm skeptical.

Cons: doesn't work at all
Vehicle: BMW
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Which alternator to choose — Bosch or OEM Mazda?

If choosing alternator across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.

We compare alternator across these categories:

Comparison of alternator Bosch and OEM Mazda
  1. PR Score.
  2. Overall ranking.
  3. Vote balance.
  4. Average rating.
  5. Number of reviews.
  6. Feature ratings.
  7. Car owners’ choice.

Which alternator are better — OEM Mazda or Bosch?

In March 2026 on PartReview, alternator Bosch were overall better than OEM Mazda.

  1. Bosch received a PR Score of 72 out of 100, and OEM Mazda scored 38 points.
  2. Bosch ranked 2 in the overall ranking, and OEM Mazda ranked 17.
  3. The average rating is higher for Bosch (3.7) than for OEM Mazda (2.4).
  4. Alternator Bosch have better feature ratings than OEM Mazda:
    • Noise - owners believe, that this property for Bosch is better than OEM Mazda.
    • Lights - drivers claim, that this property for Bosch is outperforms OEM Mazda.
    • Warning light - reviews suggest, that this property for Bosch is preferred to OEM Mazda.

Which alternator are more popular — Bosch or OEM Mazda?

In March 2026 on PartReview, alternator Bosch were overall more popular than OEM Mazda.

By vote balance, alternator Bosch surpassed OEM Mazda:

  • For Bosch, the ratio of positive (471) to negative (177) votes is 294 votes.
  • For OEM Mazda, the ratio of positive (15) to negative (24) votes is -9 votes.

By number of reviews, alternator Bosch surpassed OEM Mazda:

Which alternator do car owners prefer — Bosch or OEM Mazda?

In March 2026, according to PartReview, alternator Bosch led more car-specific ratings than OEM Mazda:

Bosch are chosen by owners of cars such as: BMW X5, Ford Focus, Volkswagen Golf, Volkswagen Jetta, Volkswagen Passat, and others.

Alternator OEM Mazda have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.

Other comparisons of alternator

If this comparison didn’t fully answer your question, there are many others on PartReview.

For example, comparisons of alternator Bosch with: Denso, Duralast, OEM Toyota, VALEO, OEM Honda, OEM Volkswagen, AC DELCO, OEM FORD, OEM Audi, OEM Nissan.

Also available: comparisons of alternator OEM Mazda with: Denso, Duralast, OEM Toyota, VALEO, OEM Honda, OEM Volkswagen, AC DELCO, OEM FORD, OEM Audi, OEM Nissan.

You can also see who is better among other alternator manufacturers: Bosch or Denso, Denso or Duralast, OEM Toyota or Denso, Bosch or Duralast, Denso or VALEO.

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