NGK 48658 Ignition Coil

NGK COP Ignition Coil 48658 Overview

The NGK COP Ignition Coil 48658 is a distributorless coil-on-plug ignition coil built to meet or exceed OE standards for durability and consistent spark delivery. It is designed for late-model domestic applications and direct replacement service on a wide range of Chevrolet, GMC, Cadillac, Hummer, Buick, and Isuzu vehicles.

NGK’s COP ignition coil line is backed by decades of ignition-system experience and testing in an ISO 17025 accredited lab. The result is a replacement ignition coil engineered for dependable operation in demanding conditions, with coverage that includes many GM truck, SUV, and van platforms.

Key Features

• Brand: NGK COP Ignition Coil
• Part number: 48658
• Distributorless COP (coil on plug) design
• 12-volt ignition coil
• Blade terminal type with 4 terminals
• Female connector and male terminal gender
• Oil filled: No
• Mounting bracket included: No
• OE-style replacement built for direct service use

Product Details

This NGK ignition coil is engineered for vehicles using a distributorless ignition system and a coil-on-plug layout. It is a direct-fit ignition component for applications such as Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade models that use the specified round ignition coil configuration. The 48658 part number also cross-references Standard Ignition UF-262 for the same application.

NGK develops and tests its ignition coils under controlled conditions to verify performance and durability beyond typical vehicle operating environments. That focus on OE-level construction makes this coil a practical replacement when restoring ignition performance on GM trucks, vans, and SUVs.

What This Ignition Coil Helps 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 coil faults

Installation Notes

Verify connector style, terminal layout, and ignition coil shape before installation. This part is listed for distributorless COP applications and specific round-coil GM fitments, including 2000-2006 Chevrolet Tahoe, 1999-2006 GMC Sierra 1500, and 2002-2006 Cadillac Escalade. Some applications note included hardware and seal, while others specify round ignition coil or old body style requirements, so match the vehicle details exactly before ordering.

For best results, inspect the coil boot, connector, and surrounding ignition components during replacement. Confirm the vehicle’s year, make, model, and engine-specific coil configuration against the fitment list for the correct application.

Quality Assurance

NGK manufactures ignition coils to meet or exceed OE standards and validates designs in an ISO 17025 accredited test lab. Part number 48658 reflects NGK’s OE-focused approach to ignition service parts and broad coverage across domestic truck, SUV, and van platforms.