Delphi GN10404 Ignition Coil

Delphi GN10404 Ignition Coil Overview

The Delphi GN10404 ignition coil is a coil-on-plug replacement built for direct ignition service on select Mercedes-Benz applications. It combines a 3-terminal blade connection with OE-based engineering knowledge drawn from Delphi’s long history supplying original equipment to major automakers.

Compatible With 1996-2002 Mercedes-Benz SL600, 1998-1999 Mercedes-Benz CL600, 1996-1999 Mercedes-Benz S420, 1996-1999 Mercedes-Benz S500, 1996-1999 Mercedes-Benz S600, 1996-1998 Mercedes-Benz SL500, and 1997 Mercedes-Benz E420.

• Coil-on-plug ignition coil for direct spark delivery
• Blade terminal design with 3 male terminals
• Includes ignition coil and instruction sheet
• OE heritage and application knowledge from Delphi
• Cross-references Bosch 0221504001 and Standard Ignition UF-352 for the same application

Detailed Product Description

Delphi GN10404 is an ignition coil designed for Mercedes-Benz engines that use a coil-on-plug configuration. This style mounts directly at the spark plug location, helping maintain consistent ignition performance in vehicles such as the Mercedes-Benz SL600, S500, and CL600. The GN10404 part number is a direct reference for shoppers searching for a Mercedes-Benz ignition coil replacement with OE-style fit and terminal layout.

Delphi builds this coil using OE experience and supplier knowledge developed over decades of original equipment work. The result is a replacement ignition coil intended to match the electrical and physical requirements of the listed applications while supporting reliable spark delivery under normal engine operation.

What This Ignition Coil Helps Address

• Engine misfire under load or at idle
• Hard starting caused by weak ignition output
• Rough running or hesitation during acceleration
• Check engine light conditions related to ignition performance
• Loss of spark on a coil-on-plug Mercedes-Benz ignition system

Installation Notes and Tips

Verify the connector style, terminal count, and vehicle application before installation. The Delphi GN10404 uses a 3-terminal male blade connection, so matching the electrical connector is important for proper fitment. Confirm the vehicle is one of the listed Mercedes-Benz applications, including 1996-2002 SL600 and 1996-1999 S500, before replacing the original coil.

For best results, inspect spark plugs and related ignition components during service. A worn plug or damaged connector can affect coil performance even when the replacement part number is correct.

Quality Assurance

Delphi draws on 100 years of OE experience and original equipment supplier knowledge, and that heritage is built into this aftermarket ignition coil. The GN10404 is engineered with the application requirements of the listed Mercedes-Benz models in mind.