{"product_id":"ngk-4390-spark-plug-wire-set","title":"NGK 4390 Spark Plug Wire Set","description":"\u003ch2\u003eReliable Ignition Performance for Subaru Impreza\u003c\/h2\u003e\u003cp\u003eThe NGK Spark Plug Wire Set 4390 is designed specifically for Subaru Impreza models, ensuring precise fitment and optimal ignition performance. Featuring high-quality silicone insulation and noise suppression, this spark plug wire set supports efficient engine operation and reduces electrical interference.\u003c\/p\u003e\u003ch2\u003eKey Features of NGK Spark Plug Wire Set 4390\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eInsulation Color: Blue for easy identification\u003c\/li\u003e\n\u003cli\u003eDurable silicone insulation material for heat resistance\u003c\/li\u003e\n\u003cli\u003eNoise suppression technology to minimize electromagnetic interference\u003c\/li\u003e\n\u003cli\u003eMagnesium core with variable pitch for consistent spark delivery\u003c\/li\u003e\n\u003cli\u003eSpecific fitment tailored for Subaru Impreza vehicles\u003c\/li\u003e\n\u003cli\u003eInsulation outside diameter of 7.00 mm for reliable protection\u003c\/li\u003e\n\u003cli\u003ePart Number Rc-fx55, Stock Number 4390\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the NGK Spark Plug Wire Set Product Line\u003c\/h2\u003e\u003cp\u003eThe NGK Spark Plug Wire Set line focuses on delivering ignition wire sets engineered for specific vehicle applications. This ensures compatibility and performance by using materials like silicone insulation and advanced core designs such as magnesium variable pitch cores. The 4390 set exemplifies this approach by combining noise suppression and durable construction tailored for Subaru Impreza models.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis NGK Spark Plug Wire Set 4390 features a silicone insulation that withstands high temperatures and environmental stress, maintaining wire integrity over time. The magnesium core with variable pitch enhances spark energy transfer, improving ignition reliability. Noise suppression reduces radio frequency interference, which can affect vehicle electronics. The blue insulation color aids in quick identification during maintenance. Designed specifically for Subaru Impreza, this set ensures a precise fit and optimal engine performance.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by This Spark Plug Wire Set\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMisfires caused by worn or damaged ignition wires\u003c\/li\u003e\n\u003cli\u003eElectrical noise interfering with vehicle electronics\u003c\/li\u003e\n\u003cli\u003eReduced engine performance due to poor spark delivery\u003c\/li\u003e\n\u003cli\u003eHeat-related wire degradation in the engine bay\u003c\/li\u003e\n\u003cli\u003eFitment problems with generic ignition wire sets\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the NGK Spark Plug Wire Set 4390, ensure the engine is cool to avoid burns. Replace wires one at a time to maintain correct firing order. Verify that each wire is securely connected to both the spark plug and ignition coil terminals. Inspect boots and connectors for damage before installation. Proper routing away from hot engine components will extend wire life.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNGK maintains strict quality control standards for its ignition components. The NGK Spark Plug Wire Set 4390 is manufactured to meet OEM specifications for Subaru Impreza models. While specific warranty details are not provided here, NGK products typically come with manufacturer-backed warranties covering defects in materials and workmanship.\u003c\/p\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":43959295836341,"sku":"BCDP-4390","price":46.68,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NG_4390_Fro.jpg?v=1775006401","url":"https:\/\/www.partcatalog.com\/products\/ngk-4390-spark-plug-wire-set","provider":"PartCatalog","version":"1.0","type":"link"}