NGK 58985 Direct Ignition Coil Boot

NGK Coil on Plug Boot for OE-Style Ignition Repair

The NGK Coil on Plug Boot, part number 58985, is a premium direct ignition coil boot built for vehicles that use coil-on-plug ignition systems. It is designed for select Saturn and Cadillac applications where a direct ignition coil boot is required to restore reliable spark transfer at the plug.

NGK’s Coil on Plug Boot line focuses on OE-level fit, durability, and consistent ignition performance. With NGK’s long history in ignition components, this boot is a practical replacement choice for drivers servicing Saturn L300, LW300, Vue, LS2, LW2, and Cadillac CTS or Catera models.

Key Features

• Brand: NGK Coil on Plug Boot
• Part number: 58985
• Premium grade direct ignition coil boot
• Black boot color
• Length: 2.95 in.
• Built for coil-on-plug ignition service
• OE-focused replacement for domestic and import vehicles

Product Details

NGK part number 58985 is a direct ignition coil boot used in coil-on-plug systems to transfer ignition energy from the coil to the spark plug. This NGK Coil on Plug Boot is engineered for OE-style replacement needs and reflects NGK’s experience supplying ignition components for a wide range of vehicles. It is a fitment-based solution for drivers searching for a Saturn L300 ignition coil boot, Cadillac CTS coil boot, or a replacement coil boot for Saturn Vue and Catera applications.

This part cross-references Standard Ignition SPP119E for the same application.

What It Helps Address

• Misfire caused by worn or damaged coil boot insulation
• Weak spark transfer at the spark plug
• Ignition performance loss from heat-aged boot material
• Intermittent engine running issues related to coil boot wear
• Service replacement for coil-on-plug ignition maintenance

Installation Notes and Tips

• Confirm engine and ignition system match the listed fitment before ordering.
• Fits 2001-2005 Saturn L300, N/A; no wires required; 6 coils are required.
• Fits 2003-2004 Cadillac CTS, N/A; no wires required; 6 coils are required.
• Fits 2001-2003 Saturn LW300, N/A; no wires required; 6 coils are required.
• Fits 2002-2003 Saturn Vue, N/A; no wires required; 6 coils are required.
• Fits 1999-2001 Cadillac Catera, N/A; no wires required; 6 coils are required.
• Fits 2000 Saturn LS2, N/A; no wires required; 6 coils are required.
• Fits 2000 Saturn LW2, N/A; no wires required; 6 coils are required.

Quality Assurance

NGK is known for ignition components developed with extensive OE experience and manufactured to support durability and operational performance standards. Part number 58985 is a premium replacement boot from NGK’s ignition product line for select Saturn and Cadillac applications.