Deliver a precise, reliable spark with the Champion Iridium Spark Plug, manufacturer part number 9409 (Champion plug type RER8WMPB). It's a direct-fit replacement for a broad list of applications, including the 2008-2013 BMW M3 [V8-4.0L], 2006-2010 BMW M5 [V10-5.0L], 2018-2019 GENESIS G80 [V8-5.0L], 2011-2016 HYUNDAI ELANTRA [L4-1.8L], 2016-2025 HYUNDAI SONATA [L4-2.0L], 2010-2019 KIA SOUL [L4-1.6L], 2010-2012 MERCEDES-BENZ C250 [V6-2.5L], 2007-2020 MITSUBISHI OUTLANDER [V6-3.0L] and many more — see the Buyer's Guide tab for the full list.
- Fine-wire iridium center electrode: designed for long-term durability and consistent, efficient ignition.
- Platinum-enhanced ground electrode: promotes precise spark focus for efficient combustion.
- Resistor plug: flat seat with a crush washer included.
- Pre-gapped, coated shell: simplifies installation and provides corrosion resistance.
This plug features a 12 mm thread diameter and ships pre-gapped at roughly 0.033 in. Built to meet OE fit, form and function for dependable ignition across the listed engines. Fouled or worn plugs can show up as rough idle, misfires, hard starting, hesitation or reduced fuel economy — if worn plugs are the cause, replacing them may address the issue, so diagnose first. Quantity varies by engine (listed applications use 2 to 10 plugs); minimum order quantity is 4. Country of origin: China. Manufacturer part number 9409 · Champion plug type RER8WMPB.
This part cross-references / interchanges with the following part numbers:
XP5703, XP6203, 12120032273, RER8WMB, 1886709095, 1887111075, 1884908080, 1885510060, 12122158165, 12122293697, 1822A011, 1321590003, 1321590103, 1321590203
