Ignition Coil + Spark Plugs for Chevrolet C1500 K1500 (1996-1999) 4.3L 5.0L 5.7L

Direct-Replacement Ignition Coil and Spark Plug Kit for 1996-1999 Chevrolet C/K Trucks 4.3L, 5.0L, 5.7L (GMT400 Vortec)

What it Does: The Ignition Coil and Spark Plug Kit replaces worn secondary ignition components on 1996-1999 Chevrolet C/K Trucks to eliminate misfires, stabilize idle, and restore consistent spark delivery under load.

The Stock Chevrolet C/K Trucks Ignition Coil Breakdown

Factory GM E-core ignition coils on GMT400 trucks suffer from chronic dielectric insulation failure caused by long-term engine bay heat soak. As thermal stress breaks down the coil's primary and secondary winding laminations, internal resistance increases, creating weak spark output and intermittent misfires (DTC P0300). Combined with electrode gap erosion on aged spark plugs, the elevated voltage demand strains the aging ignition system, causing hesitation under load, poor fuel economy, and incomplete combustion in Vortec engines.

The Engineering Solution

This kit features a direct-fit, high-dielectric epoxy-molded ignition coil engineered to match factory dwell times while resisting thermal vibration. Wound with heavy-gauge copper magnet wire, it produces the high-energy discharge required to ignite air-fuel mixtures reliably across all RPM bands. The included high-conductivity spark plugs feature anti-corrosion nickel-plated shells, thermal-resistant ceramic insulators, and durable copper cores designed for stable gap retention and rapid heat dissipation under heavy towing demands.

Technical Specifications

Compatibility

• 1996-1998 Chevrolet C1500 4.3L V6
• 1996-1999 Chevrolet C1500 5.0L V8
• 1996-1999 Chevrolet C1500 5.7L V8
• 1996-1998 Chevrolet K1500 4.3L V6
• 1996-1999 Chevrolet K1500 5.0L V8
• 1996-1999 Chevrolet K1500 5.7L V8

Note: 4.3L V6 applications utilize 6 of the 8 included spark plugs; V8 engines use all 8.

Frequently Asked Questions

Does this fit the GMT400 C/K Trucks?
Yes, this is a direct fit for the 1996-1999 Chevrolet C/K Trucks equipped with the L35, L30, or L31 Vortec engines.

Should the spark plug gaps be verified prior to installation?
Yes, always verify and set the spark plug gap to the factory specification of 0.060 inches using a feeler gauge prior to installation.

The Chevrolet Truck Durability Standard

Built to handle prolonged operating hours and high-load hauling cycles, this ignition assembly delivers the spark stability required to keep your GM small-block or V6 powertrain running cleanly under demanding towing conditions.