



⚡ Power your drive with Bosch’s double iridium spark—where performance meets longevity!
The BOSCH 9603 OE Fine Wire Double Iridium Spark Plug features a 360-degree laser-welded ultra-fine iridium firing pin and ground electrode, reducing voltage requirements by up to 24% and offering 4X longer life than standard copper plugs. With corrosion-resistant nickel-plated threads and factory pre-gapping, it ensures easy installation and reliable OE-level performance across a wide range of modern gasoline engines, including GDI models.




| Manufacturer | Bosch Automotive |
| Brand | BOSCH |
| Model | Spark Plug |
| Product Dimensions | 10.16 x 17.78 x 22.86 cm; 22.68 g |
| Item model number | 9603_1 |
| Exterior | Machined |
| Manufacturer Part Number | 9603 |
| OEM Part Number | 9603 |
| Position | Front, Rear |
| Item Weight | 22.7 g |
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