{"product_id":"r7437-8-racing-spark-plug","title":"R7437-8 Racing Spark Plug","description":"The NGK R7437-8 (also known as NGK 4901) is a purpose-built racing spark plug engineered for tuned performance engines and demanding racing conditions. Its design is optimized to handle increased cylinder pressures and combustion temperatures often found in modified engines running Stage 1 maps and beyond, helping to prevent misfires and maintain consistent ignition under boost.\n\nKey construction elements include a fine wire iridium center electrode for a focused and reliable spark, which also offers superior wear resistance compared to standard nickel plugs. The spark plug features a 14mm thread diameter, 1.25mm thread pitch, gasket seat, 26.5mm reach, and a 5\/8\" hex size. It has a solid terminal type and a projected, fine wire 0.6mm iridium center electrode, complemented by a nickel, taper cut ground electrode.\n\nTechnical specifications include a resistor (5k Ohm) and a heat range of 8, indicating a colder plug suitable for high-output applications. Torque specifications are provided for both aluminum (18-21.6 lb-ft) and cast iron (18-25.3 lb-ft) cylinder heads. The manufacturer notes \"RACING USE ONLY,\" and advises that while the spark plugs are pre-gapped for general use (typically 0.7mm), the gap should always be consulted with and adjusted by a tuner for specific engine maps, often to a tighter setting like 0.6mm for optimal performance under boost.\n\nThe R7437-8 is a popular choice for tuned VW, Audi, SEAT, Skoda, BMW, and other turbocharged petrol applications running uprated software. Customers are responsible for confirming fitment for their specific vehicle and consulting with their tuner.","brand":"NGK Ruthenium","offers":[{"title":"Default Title","offer_id":52663103619384,"sku":"NGK-R7437-8","price":47.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687073405.jpg?v=1784323844","url":"https:\/\/store.motormia.co\/products\/r7437-8-racing-spark-plug","provider":"MOTORMIA","version":"1.0","type":"link"}