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Spark Plug 991.1 R / GT3 / RS / Cup 17 and 991.2 / GT3 / RS / Cup 18+ - ZGR5 NQE - Bosch

- Replacement/Accessory
If your spark plugs are beginning to fail, you will experience engine misfires, slow acceleration, reduced fuel economy, engine surging, rough idle and difficulty starting the car. Replace them with high-quality Bosch OEM (Original Equipment Manufacturer) spark plug replacement, designed to perform like the original. We source this part in Germany to ensure quality, reliability and precise fitment. Sold individually. 6 Necessary per car. Please Note: Please check the model fitment tab to ensure accurate fitment. This part number is currently the latest supersession and can be used in place of part # 999 170 153 90. Please check with us for Cup fitment after 2018.
99917015391
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