NGK 59047 Direct Ignition Coil Boot

NGK Coil on Plug Boot for GM Ignition Service

NGK 59047 is a premium direct ignition coil boot built with a black rubber boot material for GM coil-on-plug ignition service. It is a direct replacement style boot for select Buick, Cadillac, and other GM applications where the ignition coil boot is serviced separately from the coil.

Built under the NGK Coil on Plug Boot line, this part reflects NGK’s focus on OE-level ignition components and long-term durability for domestic and import vehicles. Part number 59047 is also identified as CPB-GM017.

Key Features

• Premium-grade direct ignition coil boot
• Black rubber boot material for ignition insulation service
• NGK Coil on Plug Boot product line
• Part number 59047 / CPB-GM017
• Cross-reference: Standard Ignition SPP195E

Detailed Description

NGK 59047 is a direct ignition coil boot designed for coil-on-plug ignition systems that use a separate boot between the ignition coil and spark plug. It is listed for 2007-2011 Buick Lucerne, 2007-2011 Cadillac DTS, 2007-2010 Cadillac STS, 2007-2009 Cadillac SRX, and 2007-2009 Cadillac XLR. These GM applications use a direct ignition setup, and the boot is selected by vehicle-specific fitment rather than universal sizing.

The NGK Coil on Plug Boot line is positioned for ignition service where OE-style fit, material quality, and consistent electrical insulation matter. NGK 59047 supports ignition system maintenance on Buick Lucerne and Cadillac DTS, STS, SRX, and XLR models when the coil boot is the service part being replaced.

Common Issues This Part May Address

• Cracked or heat-aged ignition coil boot material
• Misfire caused by poor spark transfer at the plug end
• Carbon tracking or insulation breakdown in the boot
• Rough idle related to worn coil-on-plug insulation
• Intermittent ignition performance on GM direct ignition systems

Installation Notes and Tips

Verify the vehicle’s year, make, and model before ordering. This part is listed for direct ignition coil boot applications on the specified Buick and Cadillac vehicles, and the fitment notes indicate no wiring is needed. Inspect the ignition coil, spark plug, and surrounding ignition components during service so the new boot is installed into a clean, dry ignition path.

For search and catalog reference, this part number is NGK 59047 and it is also known as CPB-GM017.

Quality Assurance

NGK has extensive OE experience in ignition products and manufactures ignition components to meet OE standards for durability and operational performance. Its ignition product range includes spark plugs, glow plugs, ignition coils, coil-on-plug boots, and wire sets, supported by North American and global manufacturing and distribution operations.