Product Details
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| Seat Type |
Flat |
| Resistor Type |
Yes |
| Gap Size |
.028 |
| Hex Size |
14 bi-hex |
| Thread Diameter |
12.00 |
| Center Electrode Core Material |
Copper |
| Electrical Terminal Type |
Cup |
| Ground Electrode Tip Design |
Projected Square Platinum Electrode - High Ignitability |
| Reach |
5.6 |
| Ground Electrode Quantity |
1 |
| Ground Electrode Core Material |
Copper |
| Center Electrode Tip Material |
Iridium |
| Manufacturer Heat Range |
9 |
| Ground Configuration |
Standard |
| Resistance |
5500.0 |
| Insulator Height |
51.00 |
| Heavy Duty Supplier |
Yes |
| Stock Number |
91731 |
| Part Number |
SILKGR9A7EG |
| Part Terminology |
Spark Plug |
Features & Benefits
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NGK Laser Iridium High Ignitability spark plugs offer the best combination of performance and longevity. Engineered specifically for OE applications, Laser Iridium High Ignitability spark plugs are tested to the highest standards to ensure quality and durability. Iridium tipped center electrode provides durability six times harder than platinum. NGKs high grade pure alumina ceramic and 98 percent pure copper core prevents the spark plug from overheating while providing reliable starts. Laser Iridium High Ignitability spark plugs feature raised platinum pad or platinum fine wire tip on the ground electrode for even wear in distributorless ignition systems and improved spark performance.
Application Summary
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2014-13 Mercedes-Benz C300, 2014-12 Mercedes-Benz C350, 2015 Mercedes-Benz C400, 2020-17 Mercedes-Benz C43 AMG, 2016 Mercedes-Benz C450 AMG, 2020-14 Mercedes-Benz CLA45 AMG, 2017-15 Mercedes-Benz CLS400, 2016-14 Mercedes-Benz E300, 2016-12 Mercedes-Benz E350, 2018-14 Mercedes-Benz E400, 2018-17 Mercedes-Benz E43 AMG, 2020-19 Mercedes-Benz E450, 2016-15 Mercedes-Benz GL450, 2019-15 Mercedes-Benz GLA45 AMG, 2020-17 Mercedes-Benz GLC43 AMG, 2018-16 Mercedes-Benz GLE350, 2019-16 Mercedes-Benz GLE400, 2019-17 Mercedes-Benz GLE43 AMG, 2016 Mercedes-Benz GLE450 AMG, 2018-16 Mercedes-Benz GLE550e, 2019-17 Mercedes-Benz GLS450, 2015-12 Mercedes-Benz ML350, 2015 Mercedes-Benz ML400, 2020-18 Mercedes-Benz S450, 2017-15 Mercedes-Benz S550e, 2020-19 Mercedes-Benz S560e, 2016-15 Mercedes-Benz SL400, 2020-17 Mercedes-Benz SL450, 2020-17 Mercedes-Benz SLC43 AMG
