60% under what the other stores charge
Compared across 14 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.
It checks today's price at every store, compares the alternatives and answers in about a minute.
The NGK ILFR7H is a laser iridium spark plug built as an OE replacement for the 2018-2021 Subaru WRX STI and the 2006 Mitsubishi EVO 9. It uses a fine iridium center electrode on a copper core, a pure alumina silicate ceramic insulator, trivalent metal plating and triple seals. NGK rates it for up to 100,000 miles. It suits owners doing a scheduled tune-up or restoring stock ignition in these turbocharged cars. Against generic platinum plugs it offers longer service life and a factory-matched heat range, though it costs more per plug and is not a performance upgrade over the stock part.
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Lowest price we've seen: $13.72 on Nov 13 at NGK. Tracked across 13 stores since Nov 13.
Owners of the WRX STI and EVO 9 generally treat the ILFR7H as the correct stock plug, praising smooth idle and steady running after replacement. Complaints center on cost and on fakes sold online.
These NGK Laser Iridium spark plugs (ILFR7H) are sold as a set of 4. They fit the 2018-2021 Subaru WRX STI and the 2006 Mitsubishi EVO 9. They are made for OE applications and are an OEM-compliant replacement plug.
Each plug has a laser-welded iridium tip with the smallest tip diameter available, which slows wear. The shell has trivalent metal plating that resists corrosion and seizing. The insulator is pure alumina silicate ceramic for strength and heat transfer. A copper core helps remove heat, corrugated ribs prevent flashover, and triple seals prevent leakage.
The plugs come pre-gapped and do not need modification or re-gapping. The service life is rated at 100k miles, and the manufacturer warranty is 60 days.
