CarCareTruth Score
Decent.
Opens Amazon in a new tab. No account needed to look.
Saved to your guest loadout. Sign up to also save to your Cabinet (consumables) or Kit (tools you own).
As an Amazon Associate I earn from qualifying purchases. Full disclosure
Prices may varyThis product ranks #15 of 31 in Spark Plug.Three above it ↓
Last reviewed July 13, 2026
TL;DR NGK's ILZKAR8J8SY is the genuine Honda dealer-channel plug for the Civic Type R's K20C1 engine. Iridium center electrode, platinum ground, rated for 100,000 miles, not yet community-confirmed at that interval.
Fine-wire iridium center electrode with a 0.6mm tip, platinum ground, heat range 8, 12mm thread, 26.5mm reach, factory-set 0.030in (0.75mm) gap. Honda's parts catalog lists this NGK part under dealer part 12290-5PA-A01, so NGK is the OE dealer-channel supplier, not a cross-reference. Fitment covers the 2023-2025 Civic Type R (K20C1), plus the older 10th-gen Si and 1.5T CR-V on the same part number. NGK rates it 100,000 miles, unconfirmed by independent photo evidence.
Right pick for a 2023-2025 Civic Type R at the 100,000-mile interval, the direct Honda-dealer plug. Skip for the current Civic Si, which takes a different Honda part despite similar construction.
No chemical exposure pathway: a passive part with no SDS. The iridium tip carries a small precious-metal mass, offset by the 100,000-mile interval cutting consumption. The steel shell recycles as scrap; the ceramic insulator goes to the trash; no take-back program.
It is the genuine Honda dealer-channel part. Honda's own parts catalog lists dealer number 12290-5PA-A01 directly as this NGK plug, not as a cross-reference to a different maker's part.
Yes. Honda's genuine-parts catalog documents it for the 2023-2025 5-Door Civic Type R (the K20C1 2.0L turbo engine), confirmed by an independent retailer catalog and by an owner-forum member citing the factory owner's manual.
It fits the older 2017-2020 Civic Si, per Honda's own dealer-parts catalog. The current-generation (2022-present) Civic Si uses a different Honda dealer part instead. Always confirm your exact model year and trim before ordering.
Heat range 8 with a factory-set gap of 0.030 in (0.75mm), per NGK's own product specification.
NGK's own product page states a 100,000-mile longevity rating. This is the manufacturer's claim; independent long-term removal-photo confirmation for this specific part number was not located during research.
Marketing copy from NGK, via Amazon. Not editorial.
Per manufacturer cross-reference. Verify on Amazon before purchase.
Weekly pick
One product, one safety verdict, every week. No spam.
Denso
SK20HR11 Iridium Long Life Spark Plug
Motorcraft
SP-580X Iridium Spark Plug
ACDelco
41-962 Double Platinum Spark Plug
Motorcraft
SP-594 Iridium Spark Plug
As an Amazon Associate I earn from qualifying purchases. Full disclosure
Community
0 postsShare how you use this product
Drop a quick comment or post a full review with photos and a star rating.
Sign in to postNew here? Create a free account.