★★★★★ 5
Make sure you know the size
Yes worked like a charm
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026
HKS SUPER FIRE RACING M40i
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
HKS SUPER FIRE RACING M40iSKU: 50003 M40I UPC: 4957266720240 HKS SUPER FIRE RACING M40i for Nissan Skyline R33 R34 RB25DET Toyota JZX100 1JZ GTE Subaru WRX HKS Super Fire Racing M40i is a high performance iridium spark plug for turbocharged JDM engines. It fits Nissan Skyline R33 R34 RB25DET, Toyota Mark II Chaser Cresta JZX100 1JZ GTE, Subaru Impreza WRX GC8 EJ20 and more. This plug provides focused spark energy for quicker combustion, sharper throttle response, and added
Quick Dispatch:
Your HKS SUPER FIRE RACING M40i orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your HKS SUPER FIRE RACING M40i ships.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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4.4 ★★★★★
Based on 898 reviews
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Product Reviews
★★★★★ 5
Great fitment, made changing the oil filter easy
Perfect fit for my m760i oil filter housing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
★★★★★ 5
s tier quality
superior quality, single cast aluminum 👍
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Reviewed in the United States on May 2, 2026
★★★★★ 4
Too Tight but It Works
It doesn't really sit on very well to be honest, it tends to sit TOO tight in my opinion. Taking it off can be a hassle but at least it gets the job done, durability is good, finish is great, obviously easy to use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2025
★★★★★ 5
BMW F25
Saved me when tried to change the oil. Great price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
