NGK 48658 Ignition Coil

Reliable Ignition Performance for GM and Isuzu Vehicles

The NGK COP Ignition Coil part number 48658 is designed to deliver consistent ignition performance for a range of GM and Isuzu models. This 12-volt distributorless coil-on-plug ignition coil ensures efficient spark delivery without the need for an oil-filled design, making it a durable choice for your vehicle's ignition system.

• 12-volt distributorless ignition coil
• Coil-on-plug (COP) design for direct spark delivery
• Blade terminal type with 4 terminals
• Female connector and male terminal gender
• Compatible with multiple Buick, Cadillac, Chevrolet, GMC, Hummer, and Isuzu models

About the NGK COP Ignition Coil Product Line

The NGK COP Ignition Coil line focuses on coil-on-plug technology, which eliminates the need for spark plug wires by mounting the coil directly on the spark plug. This design improves ignition efficiency and reduces potential points of failure. The NGK COP Ignition Coil 48658 is engineered to meet OEM specifications for distributorless ignition systems, providing reliable spark energy for smooth engine operation.

Detailed Product Description

This NGK ignition coil operates at 12 volts and is designed specifically for distributorless ignition systems, commonly found in modern GM and Isuzu vehicles. The coil-on-plug (COP) configuration allows for direct ignition at each spark plug, improving ignition timing accuracy and reducing energy loss. The coil features a blade terminal type with four terminals, a female connector, and male terminal gender, ensuring proper electrical connections. It is not oil-filled, which can contribute to a lighter and more heat-resistant design. Note that this ignition coil does not include a mounting bracket.

Compatible Vehicles and Applications

• Buick Ascender
• Cadillac Escalade, Escalade ESV, Escalade EXT
• Chevrolet Avalanche 1500, Silverado 1500, Silverado 2500, Silverado 3500, Suburban 1500, Suburban 2500, Tahoe, Trailblazer EXT
• GMC Envoy XL, Envoy XUV, Sierra 1500, Sierra 2500, Sierra 3500, Yukon, Yukon XL 1500, Yukon XL 2500
• Hummer H2
• Isuzu Rainier
• Chevrolet Express 1500, 2500, 3500 and GMC Savana 1500, 2500, 3500
• Chevrolet SSR

Common Issues Addressed by NGK Ignition Coil 48658

• Engine misfires or rough idling due to weak or inconsistent spark
• Difficulty starting the engine caused by faulty ignition coil
• Reduced fuel efficiency linked to incomplete combustion
• Check engine light triggered by ignition system faults
• Loss of power or hesitation during acceleration

Installation Notes and Tips

When installing the NGK COP Ignition Coil 48658, ensure the ignition system is fully powered down to avoid electrical shock. Verify the connector gender and terminal types match your vehicle’s wiring harness. Since this coil does not include a mounting bracket, use the existing bracket or mounting points on your vehicle. Proper torque specifications should be followed to avoid damage to the coil or spark plug. It is recommended to replace ignition coils in sets if multiple coils show signs of wear.

Quality Assurance and Warranty

NGK ignition coils are manufactured to meet strict OEM standards for durability and performance. The NGK COP Ignition Coil 48658 undergoes rigorous testing to ensure reliable operation under various driving conditions. While specific warranty details may vary, NGK typically offers a limited warranty covering defects in materials and workmanship. Consult your parts provider for exact warranty terms.