Bosch FR7SI30 (9781) is an OE Fine Wire iridium spark plug designed with original-equipment materials and processes.
Fine-wire center electrode supports ignitability and performance; the iridium center electrode and iridium-platinum tipped ground electrode are designed for up to four times the life of standard copper plugs.
Ribbed insulator seals against the wire boot to help prevent flash-over misfires.
Nickel-plated rolled threads resist corrosion and do not require anti-seize.
Factory pre-gapped for installation without gap adjustment.
Listed fitment includes 2014–2020 Mitsubishi Mirage and 2017–2020 Mirage G4; engine affects fitment.
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