Fit a fresh set of four M45i plugs and get a stronger, more consistent spark under boost. The HKS Super Fire Racing M45i (50003-M45i) is an iridium and platinum double-performance spark plug sold as a set of 4, for tuners and track-day drivers.
The ISO-type 19mm reach fits a wide range of performance engines, and the iridium center electrode with a platinum ground keeps the gap stable over time.
Made in Japan by HKS. Heat range 9, 14mm thread, 16mm hex. Please check the plug type and reach against your engine before ordering.
Other items from the same maker that we have in stock:
| Brand | Model | Link |
|---|---|---|
| HKS | MR2 SW20 | www.ebay.com/itm/196220809719 |
| HKS | 4501-RA0002 | www.ebay.com/itm/196203151888 |
| HKS | 71008-AF013 | www.ebay.com/itm/196151908382 |
| HKS | 22004-AM001 | www.ebay.com/itm/195332197035 |
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