I’ve just bought some HKS spark plugs for the i30N.
Pros: bought for future power
Vehicle:
Hyundai
Reviews of HKS parts For Business
Average Rating
?
The manufacturer's average rating is calculated based on ratings of all its spare parts. It determines the place in the manufacturer ranking
4.6
Manufacturer Ranking
-
13
Spare Parts
6
Country
Japan
Spare Parts
I’m happy with HKSMR45XLZ sparks.
Pros: happy with performance
Part number: MR45XLZ
Also, make sure you go with the HKS plugs, they will be the longest lasting plugs, followed by NGK (yes, I know that HKS is owned by NGK).
Pros: longest lasting plugs
Never tried Royal Purple, but I only ever use the Subaru Black oil filters, or the Blitz Racing oil filters. For oil tho, I’m gonna be putting in HKS Super Oil Premium 10W-40 due to the phenomenal HTHS capabilities compared to Motul and VR-1
Pros: phenomenal HTHS capabilities
Vehicle:
Subaru Impreza WRX
i got these HKS wipers, they're like ~100 for 2, so far so good almost 2 years already, still cant find one for the rear wiper lol
Pros: good for 2 years
* Sechs Liter Motul 300V 5W-30 = 90€
* HKS-Ölfilter, da der originale Ölfilter nicht mehr passt = 30€
Vehicle:
Toyota
I use HKS oil.
Get the hks plugs, they work fantastic for the stinger.
Pros: work fantastic
Vehicle:
Kia
I recently purchased 6 spark plugs from Amazon for my Kia Stinger GT2. I noticed that in the last delivery, one was different.
Vehicle:
Kia
I used that set of plugs with gaps 0.028 and remained stock for few months. I kept running hk plugs on day to day and it was really not good for stock tune daily use. Car felt sluggish at regular driving. I realized those were 2 step colder plugs and requires a tune or else you won't generate enough boost on daily driving.
Cons: not good for stock tune, sluggish driving
Vehicle:
Kia
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Owner reviews of HKS products
The HKS brand is registered in Japan. Official website is not specified yet.
In March 2026, PartReview recorded 13 reviews across 6 parts by HKS. Average rating — 4.6 out of 5.
HKS is not yet in the PartReview manufacturers ranking due to insufficient reviews.
Popular HKS parts
The most popular HKS products on PartReview:
- Spark plug HKS - 6 reviews. PR Score — not available yet, average rating — 4.
- Oil filter HKS - 2 reviews. PR Score — not available yet, average rating — 5.
- Engine oil HKS - 2 reviews. PR Score — not available yet, average rating — 5.
- Crankshaft HKS - 1 review. PR Score — not available yet, average rating — 5.
- Wiper blades HKS - 1 review. PR Score — not available yet, average rating — 4.5.
Most owner reviews about HKS parts are collected on these pages.
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