NGK Standard Spark Plug Box of 4 (BKUR7ET) 1990-nissan-300zx-esi8352232 The upgraded heat exchanger is

The upgraded heat exchanger is especially important when upgrading turbos and/or running performance tuning software

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no welding required

NGK Standard Spark Plug Box of 4 (BKUR7ET) 1990-nissan-300zx-esi8352232 The upgraded heat exchanger isNGK Standard spark plugs (in the iconic NGK 'yellow box' packaging) are a proven OE cornerstone and technology customers have relied on for decades. Engineered specifically for OE applications, NGK Standard spark plugs provide OE quality nickel alloy reliable performance and design. NGK's legendary high grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance, while triple gasket sealing prevents combustion gas