NGK SILZKR7C11S Laser Iridium Spark Plug

NGK SILZKR7C11S is a laser iridium spark plug designed for Honda gasoline engines. It features a 0.6 mm fine-wire iridium center electrode and a platinum-tipped ground electrode, delivering superior ignitability, stable idle, and extended service intervals up to 100,000 miles. The plug incorporates a 5 kOhm internal resistor for RFI suppression, a gasket seat, and a fixed SAE terminal. Thread specification is M12 x 1.25 with 26.5 mm reach and 14 mm hex size. Heat range 7 suits Honda R20A and R18A engine families. Factory pre-gapped at 1.1 mm. Direct OEM replacement for Honda part numbers 12290-R1A-H01 and 12290-R1G-H01. Verified fitment for 2008-2016 Honda Accord, CR-V, Civic, and Odyssey models equipped with 2.0L, 2.4L, 1.8L, and 1.6L R-series engines. Cross-references include Bosch 0242135559, Bosch YR7SII330U, and Denso equivalents. Manufactured in Japan to NGK OEM standards.