NGK 59021 Direct Ignition Coil Boot

NGK Coil on Plug Boot for Mercedes-Benz AMG

The NGK Coil on Plug Boot is a premium direct ignition coil boot built for Mercedes-Benz AMG applications that use coil-on-plug ignition. It is engineered to support reliable spark transfer in high-output engines and reflects NGK’s long OE-focused background in ignition components. Part number 59021 is a direct replacement option for select Mercedes-Benz C63 AMG, E63 AMG, CLS63 AMG, ML63 AMG, and related AMG models.

Key Features

• Premium-grade direct ignition coil boot
• Black boot color
• 5.00 length
• NGK Coil on Plug Boot product line
• Direct replacement part number 59021
• Built for select Mercedes-Benz AMG ignition systems

Product Details

NGK part number 59021 is a direct ignition coil boot for vehicles that use coil-on-plug ignition architecture. NGK’s ignition product line includes spark plugs, glow plugs, ignition coils, coil-on-plug boots, and wire sets, with manufacturing and distribution support in North America and globally. For buyers searching for a Mercedes-Benz AMG coil boot replacement, this NGK Coil on Plug Boot offers a straightforward OE-style service part for maintaining ignition connection at the coil and spark plug interface.

Compatible With 2008-2014 Mercedes-Benz C63 AMG, N/A; 2011-2014 Mercedes-Benz SLS AMG, N/A; 2009-2012 Mercedes-Benz SL63 AMG, N/A; 2007-2011 Mercedes-Benz CLS63 AMG, N/A; 2007-2011 Mercedes-Benz E63 AMG, N/A; 2007-2011 Mercedes-Benz ML63 AMG, N/A; 2008-2010 Mercedes-Benz CL63 AMG, N/A; 2008-2010 Mercedes-Benz S63 AMG, N/A; 2007-2009 Mercedes-Benz CLK63 AMG, N/A; and 2007 Mercedes-Benz R63 AMG, N/A.

Common Uses

• Replacing a worn or heat-aged ignition coil boot
• Restoring spark transfer in AMG coil-on-plug systems
• Addressing misfire concerns tied to boot deterioration
• Correcting ignition performance issues caused by cracked or hardened boots
• Servicing Mercedes-Benz AMG ignition components during maintenance

Installation Notes

Verify the engine application and ignition layout before installation. This part is listed for direct ignition coil boot service on the specified Mercedes-Benz AMG models, and the fitment notes indicate no wiring is needed. Inspect the coil, spark plug, and surrounding ignition components for wear before reassembly. Part number 59021 may also appear as CPB-EU020 in catalog references.

Quality Assurance

NGK is recognized for ignition component engineering with extensive OE experience and a focus on durability and operational performance to meet OE standards. This part cross-references NGK (e.g., 59021) for the same application.