NGK 48644 Ignition Coil

NGK COP Ignition Coil for Mercedes-Benz

Restore consistent spark output with this NGK COP (Waste Spark) Ignition Coil, part number 48644. Built for 12-volt distributorless ignition systems, it is a direct-fit ignition coil for select Mercedes-Benz models including C230, SLK230, S320, C280, C36 AMG, E320, SL320, 300CE, 300E, and 300TE.

NGK ignition coils are engineered to meet or exceed OE standards and are developed with extensive testing in an ISO 17025 accredited lab. The NGK COP (Waste Spark) Ignition Coil line is focused on late-model domestic and import coverage, with the durability and electrical performance expected for daily driving and repair work.

Key Features

• 12-volt ignition coil for distributorless ignition systems
• COP (Waste Spark) coil design
• 3-pin terminal layout with female connector and male terminals
• Oil-filled: No
• Mounting bracket included: No
• OE-style replacement for select Mercedes-Benz ignition systems

Detailed Description

NGK part number 48644 is an ignition coil designed for waste spark COP applications where precise voltage delivery is critical to engine performance. It is built with a pin-style, 3-terminal connection and is intended for vehicles using distributorless ignition architecture. For Mercedes-Benz owners searching for an ignition coil for 1997-2000 Mercedes-Benz C230, 1998-2000 Mercedes-Benz SLK230, or 1994-1999 Mercedes-Benz S320, this coil provides a direct replacement option that matches the original system layout. This part cross-references Delphi GN10381 for the same application.

As part of the NGK COP (Waste Spark) Ignition Coil product line, this unit reflects NGK’s focus on OE-level fit and electrical consistency. It is also a strong match for Mercedes-Benz C280, C36 AMG, E320, SL320, 300CE, 300E, and 300TE applications listed in the fitment data. If you are replacing a failing Mercedes-Benz ignition coil, NGK 48644 is built for straightforward service on the specified vehicles.

Common Problems This Part Can Help Address

• Engine misfire caused by weak or inconsistent coil output
• Rough idle related to ignition breakdown
• Hard starting from insufficient spark delivery
• Loss of acceleration response under load
• Check engine light triggered by ignition coil faults

Installation Notes and Tips

• Verify connector style, terminal count, and coil type before installation.
• Inspect spark plugs and ignition wires or related components during coil replacement.
• Check for corrosion, damaged pins, or heat-related connector wear at the harness.
• Confirm vehicle-specific fitment for your Mercedes-Benz model and year before ordering.

Quality Assurance

NGK manufactures ignition coils to meet or exceed OE standards and validates designs through rigorous testing in an ISO 17025 accredited laboratory. That engineering focus supports dependable operation across the listed Mercedes-Benz applications, including C230, SLK230, and S320 fitments. Part number 48644 is backed by NGK’s long-standing ignition expertise and OE-oriented product development.