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M45IL are for the 3.3t platforms (Stinger, G70) while M45XL are for the 2.0t, 2.5t, and 1.6t platforms. These plugs come pre-gapped to 0.028" from HKS which is suitable for use but we suggest closing the gap down to 0.022" for maximum performance applications.
We are frequently asked which plugs are better for the Kia/Hyandai platform, HKS, or Denso. We've used both brands on our development cars and have found both to be good quality. Generally speaking HKS plugs tend to offer a longer life of 20-35k miles before they need to be replaced, while Denso plugs tend to only last 15-25k miles before needing replacement. For that longer life you do pay a price premium. We've found timing corrections and overall engine performance between them to be otherwise equivalent.
HKS M-Series Super Fire Spark Plugs Feature
0.6mm Iridium Alloy Center Electrode
Iridium Alloy Center Electrode reduces voltage requirement as well as improves ignition performance and durability.
Outer Electrode with Platinum Chip
The Outer Electrode incorporates a square platinum chip which improves durability, and when combined with the iridium center electrode boosts ignition performance.
Short Type Outer Electrode (Anti-Vibration)
The outer electrode has been shortened and engineered with the ideal shape to decrease weight for resistance against vibration. This anti-vibration design improves the longevity of the outer electrode.
Thermal Edge
After long idling or various combustion conditions, carbon buildup can occur causing misfires. The Thermal Edge of the ceramic insulator will discharge to help decrease carbon deposits.
Spark Support Gap
Discharges will occur in the Spark Support Gap (space between the tip of the insulator and the base of the outer electrode) to help prevent carbon buildup.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Since its beginning, HKS has been committed to providing well-integrated, reliable,and environmentally sound performance systems. Mr. Hasegawa's strong leadership, engineering genius, creativity and willingness to listen to customers are the pillars of the company's success. Monitoring consumer reaction and input on issues pertaining to material quality, external appearance, sound quality, and of course, performance, HKS stays in tune with automotive enthusiasts' needs. Moreover, HKS' products are designed to be user friendly for easy installation.
HKS provides a warranty to the original purchaser of HKS exhaust systems against defects in materials and workmanship for a period of one year. The warranty applies only for vehicle specific exhaust systems. Other products such as metal catalyzers, front pipes, exhaust manifolds, and center pipes are not covered.
| Sale price | $138.60 |
| Wholesale price | $155.76 |
| Shipping |
Weight: 1.00 Length: ? Width: ? Height: ? |
| Product Added At | Friday 10 May, 2024 |
| Product Modified At | Wednesday 21 May, 2025 |
| Imported By | ETLOverride |
| Last Edited By | kathi@vividracing.com |
| View In Admin |
| Vendor | Inv | Cost | Retail | Jobber | Strict MAP | Core | Updated | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Burger Motorsports | $132.00 | $165.00 | ? | ? | ? | 2025-05-21 16:35:50 |
