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⚡ Spark your engine’s potential with Bosch Double Iridium – where power meets longevity!
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 lasting 4 times longer than standard copper plugs. Pre-gapped and equipped with corrosion-resistant nickel-plated threads, it ensures easy installation without anti-seize. Designed for modern gasoline engines including GDI, it meets or exceeds OE standards and fits a broad range of vehicles.




| ASIN | B00515NH4K |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #329,715 in Automotive ( See Top 100 in Automotive ) #1,891 in Automotive Replacement Spark Plugs |
| Brand | Bosch |
| Brand Name | Bosch |
| Compatible with Vehicle Type | Car |
| Core Material | Iridium |
| Customer Reviews | 4.6 out of 5 stars 879 Reviews |
| Global Trade Identification Number | 00028851010375 |
| Included Components | spark plug |
| Item Type Name | Spark Plug |
| Item Weight | 0.05 Pounds |
| Manufacturer | Bosch Automotive |
| Manufacturer Part Number | 9603 |
| Manufacturer Warranty Description | Limited |
| Model Number | 9603_1 |
| OEM Equivalent Part Number | 9603 |
| Thread Size | 1.25mm |
| Top Material Type | Nickel |
| UPC | 028851010375 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | Car |
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