NBR NSP-301I Iridium + Platinum Spark Plug Set of 4 ILKAR7B11 for Toyota, Nissan and Japanese Vehicles

Iridium + platinum spark plug set for selected Toyota, Lexus, Nissan, Renault, Scion and Subaru vehicles listed in the fitment table. NBR NSP-301I is designed for ILKAR7B11 / S502IP / SC20HR11 type applications. A fine iridium center electrode and platinum-tipped ground electrode support stable spark generation, efficient ignition, corrosion resistance and extended service life. OEM-style dimensions allow direct replacement without modification. Confirmed specifications include M12 x 1.25 thread, 26.5 mm reach, 14 mm hex size, 1.1 mm electrode gap, heat range 7 on the NGK scale / 20 on the DENSO scale, and 15-20 Nm recommended tightening torque.