NGK IFR6Q-G x12 – Mercedes SL65 AMG R230 V12 2004–2011
12 genuine NGK IFR6Q-G Laser Iridium spark plugs — a complete twelve-plug service set for the listed Mercedes-Benz V12 application.
Primary Fitment
Mercedes-Benz SL65 AMG R230, 2004–2011.
Engine codes: M275.981.
NGK lists IFR6Q-G / stock 5648 for the SL65 AMG R230 V12 M275.981 from March 2004. Mercedes-Benz states R230 production ran 2001–2011.
NGK / OE References
- NGK part number: IFR6Q-G
- NGK stock number: 5648
- Mercedes-Benz OE: A0041591403 / 004 159 14 03
- DENSO cross-reference: VK20Y
- NGK application-catalogue spark gap: 0.8 mm
DENSO's official Mercedes-Benz OE table maps 004 159 14 03 directly to NGK IFR6Q-G and DENSO VK20Y.
Other Verified IFR6Q-G Applications
- Mercedes S600 W220 — M137.970 / M275.950 — 12 plugs
- Mercedes S65 AMG W220 — M275.980 — 12 plugs
- Mercedes S600 W221 — M275.953 — 12 plugs
- Mercedes S65 AMG W221 — M275.982 — 12 plugs
- Mercedes CL600 C215 — M137.970 / M275.950 — 12 plugs
- Mercedes CL65 AMG C215 — M275.980 — 12 plugs
- Mercedes SL600 R230 — M275.951 / M275.954 — 12 plugs
- Mercedes SL65 AMG R230 — M275.981 — 12 plugs
- Maybach 57 / 62 5.5 — M285.950 — NGK catalogue from 09/2002
- Maybach 62S 6.0 — M285.980 — NGK catalogue from 09/2005
Compatibility Check
Confirm IFR6Q-G / stock 5648, Mercedes OE A0041591403, exact V12 engine code and production date before ordering. Do not use the old Audi/VW/SEAT or B-Class claims from the source export; NGK's application catalogue does not support them for IFR6Q-G.
Google Search Terms / Product Identifiers
NGK IFR6Q-G, NGK 5648, Mercedes A0041591403, Mercedes 0041591403, DENSO VK20Y, Mercedes-Benz SL65 AMG R230 spark plugs, Mercedes V12 spark plugs, M275 spark plugs, M137 spark plugs, S600 spark plugs, S65 AMG spark plugs, CL600 spark plugs, SL600 spark plugs.
Delivery & Returns
- Free UK delivery with an estimated 2–3 working-day service
- 30-day returns, subject to the item being returned in its original condition