NGK 6043 Spark Plug

NGK Laser Iridium Spark Plug for Mercedes-Benz AMG

NGK Laser Iridium Spark Plug 6043 is an OE-style ignition component built for select Mercedes-Benz AMG applications. It combines an iridium center electrode tip, copper core, and nickel ground electrode materials to support stable ignition performance and consistent combustion in demanding performance engines.

The Laser Iridium Spark Plug line focuses on OE-level fit and durability, making it a practical choice for Mercedes-Benz C63 AMG, E63 AMG, CLS63 AMG, SL63 AMG, ML63 AMG, CL63 AMG, S63 AMG, CLK63 AMG, and R63 AMG service needs.

Key Features

• NGK Laser Iridium Spark Plug, part number 6043
• Iridium center electrode tip with copper core construction
• Nickel ground electrode core material with standard ground design
• Pre-gapped at .040 for specified applications
• 12.00 mm thread diameter, 14 mm hex size, flat seat
• 1000 ohm resistance and non-removable nut terminal
• Manufacturer heat range 7 for select AMG engine requirements

Detailed Description

NGK 6043 is engineered as a Laser Iridium Spark Plug for vehicles that require precise ignition performance and OE-style service intervals. The iridium tip supports reliable spark delivery, while the copper core and standard ground configuration help maintain consistent operation under the higher cylinder pressures common in AMG engines. This spark plug is listed for select Mercedes-Benz C63 AMG, E63 AMG, CLS63 AMG, SL63 AMG, ML63 AMG, CL63 AMG, S63 AMG, CLK63 AMG, and R63 AMG models across the 2007-2015 range shown in the fitment data. The part number 6043 also corresponds to NGK ILZKAR7A10.

This part cross-references DENSO Auto Parts 6043 for the same application.

What It Helps Address

• Rough idle caused by worn spark plug electrodes
• Misfire conditions related to weak or inconsistent spark
• Hard starting from degraded ignition performance
• Reduced throttle response from inefficient combustion
• Service replacement for OE-style Mercedes-Benz AMG ignition maintenance

Installation Notes and Tips

Verify the vehicle application against the fitment list before installation. Confirm the specified gap for your exact Mercedes-Benz AMG model, since listed applications show both .039 and .040 gap requirements. Use proper spark plug service procedures, including careful thread engagement and torque to the manufacturer specification for the engine. Check the ignition system and coil condition during service to help avoid repeat misfire concerns.

Quality Assurance

NGK is a major OE spark plug supplier in North America with more than 80 years of automotive experience. Its manufacturing and distribution network supports OE-level standards for durability and operational performance across domestic and import vehicle applications.

• Fits 2015 Mercedes-Benz C63 AMG, N/A
• Fits 2010-2014 Mercedes-Benz C63 AMG, N/A
• Fits 2008 Mercedes-Benz C63 AMG, N/A
• Fits 2009 Mercedes-Benz C63 AMG, N/A
• Fits 2010-2012 Mercedes-Benz SL63 AMG, N/A
• Fits 2009 Mercedes-Benz SL63 AMG, N/A
• Fits 2010-2011 Mercedes-Benz CLS63 AMG, N/A
• Fits 2007 Mercedes-Benz CLS63 AMG, N/A
• Fits 2009 Mercedes-Benz CLS63 AMG, N/A
• Fits 2010-2011 Mercedes-Benz E63 AMG, N/A
• Fits 2007-2008 Mercedes-Benz E63 AMG, N/A
• Fits 2009 Mercedes-Benz E63 AMG, N/A
• Fits 2010-2011 Mercedes-Benz ML63 AMG, N/A
• Fits 2007-2008 Mercedes-Benz ML63 AMG, N/A
• Fits 2010 Mercedes-Benz CL63 AMG, N/A
• Fits 2008 Mercedes-Benz CL63 AMG, N/A
• Fits 2009 Mercedes-Benz CL63 AMG, N/A
• Fits 2010 Mercedes-Benz S63 AMG, N/A
• Fits 2008 Mercedes-Benz S63 AMG, N/A
• Fits 2009 Mercedes-Benz S63 AMG, N/A
• Fits 2007-2009 Mercedes-Benz CLK63 AMG, N/A
• Fits 2007 Mercedes-Benz R63 AMG, N/A