Experience Diamond Fire technology in the E3 Resistor Spark Plug: a unique electrode shape that maximizes the power created by each spark. ⚡
The electrode combines advanced design and performance to produce an improved flame kernel shape, igniting the bulk air/fuel mixture faster and promoting more complete combustion.
This enhanced flame front moves heat into the combustion chamber more efficiently and creates a more localized pressure rise during the power stroke, resulting in improved engine performance and responsiveness. 🔥
Designed for reliable ignition and consistent results, the E3 Resistor Spark Plug helps deliver cleaner burns and better overall efficiency across operating conditions.
This product fits the following vehicles. Use the filters below to narrow down the list if needed.
| Manufacturer | Model | Family | Year | Notes |
|---|---|---|---|---|
| Harley Davidson | Softail Deluxe 107 | Softail | 2018 | |
| Harley Davidson | Softail Deluxe 107 | Softail | 2019 | |
| Harley Davidson | Softail Deluxe 107 | Softail | 2020 | |
| Harley Davidson | Softail Fat Boy 107 | Softail | 2018 | |
| Harley Davidson | Softail Fat Boy 107 | Softail | 2019 | |
| Harley Davidson | Softail Fat Boy Anniversary (ANX) 114 | Softail | 2018 | |
| Harley Davidson | Softail Fat Boy 114 | Softail | 2019 | |
| Harley Davidson | Softail Fat Boy 114 | Softail | 2020 | |
| Harley Davidson | Softail Fat Boy 114 | Softail | 2021 | |
| Harley Davidson | Softail Fat Boy 114 | Softail | 2022 | |
| Harley Davidson | Softail Fat Boy 114 | Softail | 2023 | |
| Harley Davidson | Softail Fat Boy 114 | Softail | 2024 | |
| Harley Davidson | Electra Glide Revival 114 | Touring | 2021 | |
| Harley Davidson | Softail Heritage Classic 107 | Softail | 2019 | |
| Harley Davidson | Softail Heritage Classic 107 | Softail | 2020 | |
| Harley Davidson | Softail Heritage Classic 107 | Softail | 2021 | |
| Harley Davidson | Softail Heritage Classic 107 | Softail | 2022 | |
| Harley Davidson | Softail Heritage Classic Anniversary 114 | Softail | 2018 | |
| Harley Davidson | Softail Heritage Classic 114 | Softail | 2019 | |
| Harley Davidson | Softail Heritage Classic 114 | Softail | 2020 | |
| Harley Davidson | Softail Heritage Classic 114 | Softail | 2021 | |
| Harley Davidson | Softail Heritage Classic 114 | Softail | 2022 | |
| Harley Davidson | Softail Heritage Classic 114 | Softail | 2023 | |
| Harley Davidson | Softail Heritage Classic 114 | Softail | 2024 | |
| Harley Davidson | Trike Tri Glide Ultra Classic 107 | Trike | 2017 | |
| Harley Davidson | Tri Glide Ultra Anniversary 107 | Trike | 2018 | |
| Harley Davidson | Tri Glide Ultra 107 | Trike | 2019 | |
| Harley Davidson | Tri Glide Ultra 114 | Trike | 2020 | |
| Harley Davidson | Tri Glide Ultra 114 | Trike | 2021 | |
| Harley Davidson | Tri Glide Ultra 114 | Trike | 2022 | |
| Harley Davidson | Tri Glide Ultra 114 | Trike | 2023 | |
| Harley Davidson | Tri Glide Ultra 114 | Trike | 2024 | |
| Harley Davidson | Tri Glide Ultra CVO 117 | CVO | 2020 | |
| Harley Davidson | Freewheeler 107 | Trike | 2017 | |
| Harley Davidson | Freewheeler 107 | Trike | 2018 | |
| Harley Davidson | Freewheeler 107 | Trike | 2019 | |
| Harley Davidson | Freewheeler 114 | Trike | 2020 | |
| Harley Davidson | Freewheeler 114 | Trike | 2021 | |
| Harley Davidson | Freewheeler 114 | Trike | 2022 | |
| Harley Davidson | Freewheeler 114 | Trike | 2023 | |
| Harley Davidson | Freewheeler 114 | Trike | 2024 | |
| Harley Davidson | Softail Sport Glide 107 | Softail | 2018 | |
| Harley Davidson | Softail Sport Glide 107 | Softail | 2019 | |
| Harley Davidson | Softail Sport Glide 107 | Softail | 2020 | |
| Harley Davidson | Softail Sport Glide 107 | Softail | 2021 | |
| Harley Davidson | Softail Sport Glide 107 | Softail | 2022 | |
| Harley Davidson | Softail Sport Glide 107 | Softail | 2023 | |
| Harley Davidson | Softail Sport Glide 107 | Softail | 2024 | |
| Harley Davidson | Softail Slim 107 | Softail | 2018 | |
| Harley Davidson | Softail Slim 107 | Softail | 2019 | |
| Harley Davidson | Softail Slim 107 | Softail | 2020 | |
| Harley Davidson | Softail Slim 107 | Softail | 2021 | |
| Harley Davidson | Road Glide 3 114 | Trike | 2023 | |
| Harley Davidson | Road Glide 3 114 | Trike | 2024 | |
| Harley Davidson | Road Glide CVO 121 | CVO | 2024 | |
| Harley Davidson | Softail Street Bob 107 | Softail | 2020 | |
| Harley Davidson | Softail Street Bob 114 | Softail | 2021 | |
| Harley Davidson | Softail Street Bob 114 | Softail | 2021 | |
| Harley Davidson | Softail Street Bob 114 | Softail | 2022 | |
| Harley Davidson | Softail Street Bob 114 | Softail | 2023 | |
| Harley Davidson | Softail Street Bob 114 | Softail | 2024 | |
| Harley Davidson | Softail Breakout 107 | Softail | 2018 | |
| Harley Davidson | Softail Breakout 107 | Softail | 2019 | |
| Harley Davidson | Softail Breakout Anniversary (ANX) 114 | Softail | 2018 | |
| Harley Davidson | Softail Breakout 114 | Softail | 2019 | |
| Harley Davidson | Softail Breakout 114 | Softail | 2020 | |
| Harley Davidson | Softail King 114 | Softail | 2019 | |
| Harley Davidson | Softail King 114 | Softail | 2020 | |
| Harley Davidson | Softail Fat Bob 107 | Softail | 2018 | |
| Harley Davidson | Softail Fat Bob 107 | Softail | 2019 | |
| Harley Davidson | Softail Fat Bob 114 | Softail | 2018 | |
| Harley Davidson | Softail Fat Bob 114 | Softail | 2019 | |
| Harley Davidson | Softail Fat Bob 114 | Softail | 2020 | |
| Harley Davidson | Softail Fat Bob 114 | Softail | 2021 | |
| Harley Davidson | Softail Fat Bob 114 | Softail | 2022 | |
| Harley Davidson | Softail Fat Bob 114 | Softail | 2023 | |
| Harley Davidson | Softail Low Rider 107 | Softail | 2020 | |
| Harley Davidson | Softail Low Rider S 114 | Softail | 2020 | |
| Harley Davidson | Softail Low Rider S 114 | Softail | 2021 | |
| Harley Davidson | Street | Street | 2015 | |
| Harley Davidson | Street | Street | 2016 | |
| Harley Davidson | Street | Street | 2017 | |
| Harley Davidson | Street | Street | 2018 | |
| Harley Davidson | Street | Street | 2019 | |
| Harley Davidson | Street | Street | 2017 | |
| Harley Davidson | Street | Street | 2018 | |
| Harley Davidson | Street | Street | 2019 | |
| Harley Davidson | Street | Street | 2015 | |
| Harley Davidson | Street | Street | 2016 | |
| Harley Davidson | Street | Street | 2017 | |
| Harley Davidson | Street | Street | 2018 | |
| Harley Davidson | Street | Street | 2019 | |
| Harley Davidson | Street Rod | Street | 2018 | |
| Harley Davidson | Street Rod | Street | 2019 | |
| Harley Davidson | Street Rod | Street | 2017 | |
| Harley Davidson | Street Rod | Street | 2018 | |
| Harley Davidson | Street Rod | Street | 2019 | |
| Harley Davidson | Street | Street | 2017 | |
| Harley Davidson | Street | Street | 2018 | |
| Harley Davidson | Street | Street | 2019 |