NGK 48639 Ignition Coil

Ignition Coil Overview

NGK ignition coil 48639 is a COP (coil-on-plug) replacement built for distributorless ignition systems. It is engineered to meet or exceed OE standards for durability and operational performance, with fitment for select Jaguar applications.

Compatible With 1995-1997 Jaguar Vanden Plas, N/A; 1995-1997 Jaguar XJ6, N/A; 1995-1997 Jaguar XJR, N/A; and 1995-1996 Jaguar XJS, N/A. This NGK COP Ignition Coil 48639 is a direct service part for vehicles that use a blade-terminal, female-connector coil design.

Key Features

• COP ignition coil design for distributorless ignition systems
• 12-volt electrical specification
• Blade terminals with 2-terminal configuration
• Female connector and male terminal interface
• Oil-filled construction is not used
• NGK ignition coil 48639 / stock number 48639

Detailed Description

NGK 48639 is part of the NGK COP Ignition Coil line, a product line focused on coil-on-plug ignition service for late-model domestic and import vehicles. This coil is built to support OE-style replacement needs where the original ignition system uses a distributorless, coil-on-plug layout. The design details, including the 12-volt rating, blade terminals, and female connector, help ensure the replacement matches the electrical and connection requirements of the original part. For buyers searching for an ignition coil for Jaguar Vanden Plas, Jaguar XJ6, Jaguar XJR, or Jaguar XJS, part number 48639 provides a targeted replacement option.

Common Problems This Part Can Address

• Engine misfire caused by a weak or failing ignition coil
• Rough idle related to inconsistent spark output
• Hard starting from degraded coil performance
• Loss of power under load due to ignition breakdown
• Check engine light concerns tied to ignition system faults

Installation Notes and Tips

Verify the vehicle uses a distributorless, coil-on-plug ignition setup before ordering. Match the connector style, terminal type, and electrical specification to the original coil. Confirm fitment against the vehicle application list for 1995-1997 Jaguar Vanden Plas, XJ6, and XJR, plus 1995-1996 Jaguar XJS. Part number 48639 should be cross-checked against the original service number before installation.

Quality Assurance

NGK states that this ignition coil is manufactured to meet or exceed OE standards and is developed and tested in an ISO 17025 accredited laboratory. NGK brings more than 80 years of automotive experience to its ignition products, and part number 48639 reflects that OE-focused engineering approach.