If you do replace a coil, go with OEM or quality aftermarket parts. Cheap coils cause new problems. The Hitachi coils on RockAuto are probably alright.
Pros: quality aftermarket parts
Cons: cheap coils cause problems
Reviews of HITACHI parts For Business
Average Rating
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The manufacturer's average rating is calculated based on ratings of all its spare parts. It determines the place in the manufacturer ranking
3.2
Manufacturer Ranking
#166
36
Spare Parts
8
Country
Japan
Website
hitachi-autoparts.co.jp
Spare Parts
Comparisons
I got the coil conversion kit from import car parts and GD 2.0l coils. The new age coils needed to be trimmed a little from the edges to fit. I bought hitachi coils instead of oem diamond ones and saved a lot of money. They work perfectly.
Pros: work perfectly, saved money
Cons: needed to be trimmed
Next time I'd just get the proper Hitachi coils and Denso/Ngk plugs. They don't even cost much more. The Fit is pretty sensitive about using proper plugs/coils.
Pros: proper plugs/coils
Cons: car is sensitive
Vehicle:
Honda Fit
I bought the same Hitachi coils that were in my Nissan Pathfinder, along with new NGK plugs and everything has been kosher since. Fixed the stuttering issue I was having.
Pros: fixed stuttering, good quality
Vehicle:
Nissan Pathfinder
Ive had zero problems with Hitachi coils.
Pros: zero problems
I have a 'one-wire' Hitachi forklift alternator on my Alpine. Been on there for a decade or more with no issues.
Pros: no issues
Hitachi/oem starter only if you don't want to be doing it again.
Pros: avoid doing it again
If you're using no-name or store-brand alternators from auto parts stores, those are hit or miss. You can get DENSO, Bosch, or Hitachi alternators instead of OEM (one of those companies makes the OEM anyway) too.
Cons: hit or miss
I installed an aftermarket Hitachi throttle body, but after the replacement, my Flex frequently goes into limp mode, sometimes immediately after starting. When this happens, the RPM jumps to around 2,000 RPM and sometimes fluctuates.
Pros: RPM jumps to 2000
Cons: frequently goes into limp mode
Vehicle:
Ford
Replaced the plugs and coils with Hitachis from Rock Auto for about $40 a piece. The Hitachis turned out to be dog \ud83d\udca9 and every one blew within about a year (the first one went bad in about a month).
Cons: blew within a year
Vehicle:
Kia
Mileage: 75000 km
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Owner reviews of HITACHI products
The HITACHI brand is registered in Japan. Official website: http://www.hitachi-autoparts.co.jp .
In March 2026, PartReview recorded 36 reviews across 8 parts by HITACHI. Average rating — 3.2 out of 5.
HITACHI is in the PartReview manufacturers ranking, currently at position 166. Over the last 30 days it dropped by 0 points.
Popular HITACHI parts
The most popular HITACHI products on PartReview:
- Ignition coil HITACHI - 22 reviews. PR Score — 90, average rating — 4.4.
- Alternator HITACHI - 6 reviews. PR Score — not available yet, average rating — 4.
- Fuel pump HITACHI - 2 reviews. PR Score — not available yet, average rating — 5.
- Starter motor HITACHI - 2 reviews. PR Score — not available yet, average rating — 4.5.
- Throttle body HITACHI - 1 review. PR Score — not available yet, average rating — 1.
Most owner reviews about HITACHI parts are collected on these pages.
Top-rated HITACHI parts
HITACHI achieved top positions in these PartReview part rankings:
- Best ignition coil — ranked 5 among 13 manufacturers. Received 1155 votes.
Comparisons of HITACHI parts
The most interesting comparisons of HITACHI with other manufacturers help you see which is better: