NGK Ruthenium Spark Plugs RAM 2500 & 3500 6.4
Mopar comparison numbers: SP142582AB, SP138239AC, SP079888AB, SP143877AA, 68143877AA, SPLZFR5B13, SP148183AC, SP143877AB, SP148183AB, SPLZFR5C11, 68079888AB, 68138239AC
Fits:
| Year | Make | Model | Version | Motor |
| 2024 | Ram | 2500 | Big Horn, Laramie, Limited, Limited Longhorn, Lone Star, Power Wagon, Rebel, Tradesman | 6.4L |
| 2024 | Ram | 3500 | Big Horn, Laramie, Limited, Limited Longhorn, SLT, Tradesman | 6.4L |
| 2023 | Ram | 2500 | Big Horn, Laramie, Limited, Limited Longhorn, Lone Star, Power Wagon, Rebel, Tradesman | 6.4L |
| 2023 | Ram | 3500 | Big Horn, Laramie, Limited, Limited Longhorn, SLT, Tradesman | 6.4L |
| 2022 | Ram | 2500 | Big Horn, Laramie, Limited, Limited Longhorn, Lone Star, Power Wagon, Tradesman | 6.4L |
| 2022 | Ram | 3500 | Big Horn, Laramie, Limited, Limited Longhorn, Lone Star, SLT, Tradesman | 6.4L |
| 2021 | Ram | 2500 | Big Horn, Laramie, Limited, Limited Longhorn, Lone Star, Power Wagon, Tradesman | 6.4L |
| 2021 | Ram | 3500 | Big Horn, Laramie, Limited, Limited Longhorn, Lone Star, SLT, Tradesman | 6.4L |
| 2020 | Ram | 2500 | Big Horn, Laramie, Laramie Longhorn, Limited, Lone Star, Power Wagon, Tradesman | 6.4L |
| 2020 | Ram | 3500 | Laramie, Laramie Longhorn, Limited, SLT, Tradesman | 6.4L |
| 2019 | Ram | 2500 | Big Horn, Laramie, Laramie Longhorn, Limited, Lone Star, Power Wagon, Tradesman | 6.4L |
| 2019 | Ram | 3500 | Big Horn, Laramie, Laramie Longhorn, Limited, Lone Star, SLT, Tradesman | 6.4L |
| 2018 | Ram | 2500 | Big Horn, Laramie, Laramie Longhorn, Limited, Power Wagon, SLT, Tradesman | 6.4L |
| 2018 | Ram | 3500 | Big Horn, Laramie, Laramie Longhorn, Limited, SLT, Tradesman | 6.4L |
| 2017 | Ram | 2500 | Big Horn, Laramie, Laramie Longhorn, Limited, Power Wagon, SLT, Tradesman | 6.4L |
| 2017 | Ram | 3500 | Big Horn, Laramie, Laramie Longhorn, Limited, Lone Star, SLT, Tradesman | 6.4L |
| 2016 | Ram | 2500 | Big Horn, Laramie, Laramie Longhorn, Limited, Outdoorsman, Power Wagon, SLT, Tradesman | 6.4L |
| 2016 | Ram | 3500 | Big Horn, Laramie, Laramie Longhorn, Limited, SLT, Tradesman | 6.4L |
| 2015 | Ram | 2500 | Big Horn, Laramie, Laramie Limited, Laramie Longhorn, Lone Star, Outdoorsman, Power Wagon, SLT, Tradesman | 6.4L |
| 2015 | Ram | 3500 | Big Horn, Laramie, Laramie Longhorn, Lone Star, SLT, Tradesman | 6.4L |
| 2014 | Ram | 2500 | Big Horn, Laramie, Laramie Limited, Laramie Longhorn, Lone Star, Outdoorsman, Power Wagon, SLT, Tradesman | 6.4L |
| 2014 | Ram | 3500 | Big Horn, Laramie, Laramie Longhorn, Lone Star, SLT, Tradesman | 6.4L |
Delivery includes:
- 16 spark plugs
The NGK Ruthenium HX was developed for newer engines that require high ignition performance.
The dual fine electrode (DFE) design promotes concentration of spark energy and ignites over a wider range of air-fuel ratios, providing improved performance in rich or lean engine conditions.
The center electrode is made of 0.4 mm thick ruthenium alloy and the ground electrode is made of 0.8 mm thick platinum wire.
The trivalent metal platinum offers excellent corrosion protection and anti-seizing properties.
Corrugated ribs prevent rollovers.
Theraminsulator made of pure aluminum oxide silicate ensures greater strength and better heat transfer.
Copper core helps dissipate heat.
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