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⚡ Ignite your ride with precision and power – don’t just drive, dominate!
The HKS 50003-M45XL M-Series Super Fire Racing Spark Plug features a 0.6mm iridium alloy center electrode paired with a platinum chip outer electrode, delivering superior ignition performance and durability. Its anti-vibration shortened outer electrode design enhances longevity, while the thermal edge ceramic insulator and spark support gap actively reduce carbon buildup, ensuring consistent, high-performance ignition for tuned and high-horsepower engines.
| ASIN | B003THZK5Q |
| Best Sellers Rank | #490,473 in Automotive ( See Top 100 in Automotive ) #106 in Automotive Performance Spark Plugs #2,754 in Automotive Replacement Spark Plugs |
| Brand | HKS |
| Brand Name | HKS |
| Compatible with Vehicle Type | UTV |
| Core Material | Iridium |
| Customer Reviews | 4.8 out of 5 stars 136 Reviews |
| Gap Size | 0.6 Millimeters |
| Global Trade Identification Number | 04957266720431 |
| Item Weight | 10 Grams |
| Manufacturer | HKS |
| Manufacturer Part Number | 50003-M40G |
| Thread Size | Fourteen millimeters by Nineteen millimeters |
| Top Material Type | Metal |
| Unit Count | 1 Count |
| Vehicle Service Type | UTV |
R**1
Perfect upgrade to my tuned elantra n
Switched to these HKS spark plugs and wow — my car runs smoother and feels more responsive. Easy to install and they hold up great even when I push the engine hard. Definitely a solid upgrade if you want better performance without breaking the bank. Highly recommend!
D**K
High powered turbo spark plug
Great high horsepower plug. Works in the bi turbo M157 motor with a tune. Keeps things cooler and happy. More durable than oem when tuned.
S**Z
Authentic
Excellent quality
M**M
Authentic
I was skeptical about this but then asked the seller if this is a Genuine product he answered yes. Once the product arrived and tested I realize that it is 100% authentic. Worked great on my Veloster Turbo
T**D
All hype
Overhyped. Don’t see a change at all
K**Y
Awesome Product
Was used on my 13 veloster turbo! I am tuned now and these plugs are amazing! Cant beat the price
A**I
Already bought it again :)
I already bought this item for 2nd time. It gave me the performance I needed as I have my car tuned and needs higher performance spark plugs. It lasted for more than 50k kilometer
K**E
Arrived as described
Spark plugs arrived on time and as described!
Trustpilot
2 weeks ago
3 weeks ago