Beck Arnley 178-8381 Direct Ignition Coil

Direct ignition coil for Mercedes-Benz V8 applications

Beck Arnley 178-8381 is a direct ignition coil for select Mercedes-Benz models from 1996-1999. It is built to foreign nameplate OE specifications for form, fit, and function, giving you a precise replacement for coil w/boot applications on the S420, S500, SL500, and E420.

Key features

• Direct ignition coil for OE-style replacement
• Built to match foreign nameplate OE specifications for fit and function
• Application-specific for Mercedes-Benz S420, S500, SL500, and E420
• Supports coil w/boot configurations
• Beck Arnley part number 178-8381 for easy identification

Detailed product overview

Beck Arnley 178-8381 is engineered for 1996-1999 Mercedes-Benz S420 and S500, 1996-1998 Mercedes-Benz SL500, and 1997 Mercedes-Benz E420. Beck Arnley sources parts through global partners and aligns them with OE requirements so the ignition coil matches the original form and function expected on these Mercedes-Benz vehicles. If you are replacing a failing Mercedes-Benz ignition coil on a coil w/boot setup, this part provides a direct-fit service solution.

Common issues this part addresses

• Engine misfire under load
• Rough idle or uneven combustion
• Hard starting caused by weak ignition output
• Intermittent loss of spark at one cylinder
• Check engine light related to ignition performance

Installation notes and tips

Verify the vehicle year, model, and coil w/boot configuration before installation. Inspect the spark plug boot, connector, and surrounding ignition components for wear or contamination while replacing the coil. Confirm the electrical connection is fully seated and clear any stored fault codes after installation if required by the vehicle.

Quality assurance

Beck Arnley parts are sourced to meet OE specifications for foreign nameplate applications, helping ensure the correct fit and function for the intended Mercedes-Benz platform. Part number 178-8381 is a direct ignition coil replacement for the listed applications.