NGK 48619 Ignition Coil

NGK HEI Ignition Coil 48619 Overview

NGK HEI Ignition Coil 48619 is a 12-volt electronic ignition coil built for direct replacement use in supported GM applications. It is engineered to meet or exceed OE standards for durability and consistent ignition performance, with coverage that includes late-model domestic vehicles such as the Chevrolet Corvette, Cadillac CTS, and Pontiac GTO.

NGK’s HEI ignition coil line reflects the brand’s long OE-focused manufacturing background and testing process. This coil is developed and validated in an ISO 17025 accredited test lab to verify performance under demanding conditions, helping support reliable spark output in everyday driving and high-load operation.

Key Features

• 12-volt electronic ignition coil for HEI applications
• Blade terminal design with 4 terminals
• Female connector and male terminal configuration
• Oil-filled: No
• Mounting bracket included: No
• NGK part number 48619, also listed as U5131
• Cross-reference: Delphi GN10374 and DENSO Auto Parts 673-7105

Detailed Product Information

NGK 48619 is an HEI ignition coil intended for vehicles that require a direct-fit replacement coil with electronic ignition control. It is listed for applications including 1997-2004 Chevrolet Corvette, 1998-2002 Chevrolet Camaro, 1998-2002 Pontiac Firebird, 2004-2005 Cadillac CTS, and 2004 Pontiac GTO. Additional coverage includes 2001-2002 Chevrolet Silverado 2500 HD, Silverado 3500, Suburban 2500, GMC Sierra 2500 HD, Sierra 3500, and Yukon XL 2500, plus 2002 Chevrolet Avalanche 2500 and 1998-1999 Chevrolet P30 and GMC P3500.

For buyers searching for a Chevrolet Corvette ignition coil, Pontiac GTO ignition coil, or Cadillac CTS ignition coil, NGK 48619 provides OE-style fitment support with the terminal layout and connector style needed for the listed applications.

What This Ignition Coil Helps Address

• Weak or inconsistent spark output
• Engine misfire under load
• Hard starting caused by ignition coil wear
• Rough idle related to failing coil performance
• Loss of ignition efficiency in HEI-equipped vehicles

Installation Notes and Tips

Verify the vehicle’s ignition system, connector style, terminal count, and OE part number before installation. This coil uses a blade terminal layout with a female connector and male terminals, so matching the original configuration is important for proper fitment. Confirm application details for your Chevrolet Camaro, Chevrolet Corvette, Pontiac Firebird, or other listed vehicle before replacement.

Quality Assurance

NGK manufactures this ignition coil to meet or exceed OE standards and validates coil designs in an ISO 17025 accredited test lab. The brand’s OE legacy and broad vehicle coverage support confidence in replacement selection for the listed applications.