8 Pack Square Ignition Coil & Spark Plug Wire For Chevy GMC 4.8L 5.3L 6.0L 8.1L

Square Ignition Coil & Spark Plug Wire for Chevy and GMC

This square ignition coil and spark plug wire set for Chevy and GMC delivers reliable electrical spark to active engine cylinders.

Overview

The square ignition coil & spark plug wire set for Chevy and GMC provides consistent voltage to improve engine combustion. This eight-pack of square ignition coil & spark plug wire components helps eliminate engine misfires and rough idling. It is designed for truck owners and mechanics seeking to restore throttle response and fuel mileage.

Built For Performance

• High-output square coil design delivers strong, consistent spark voltage.
• Premium silicone spark plug wires resist thermal cracking and electrical leakage.
• Low-resistance wire cores ensure maximum energy delivery to the spark plugs.
• Engineered to meet or exceed OEM performance for GM V8 engines.
• Includes eight coils and eight wires for a complete tune-up.

Fits These Machines

• for Chevy GMC 4.8L
• for Chevy GMC 5.3L
• for Chevy GMC 6.0L
• for Chevy GMC 8.1L

On-The-Job Use

• Resolving engine misfire codes in V8 trucks.
• Performing a comprehensive ignition system tune-up on high-mileage utility vehicles.
• Replacing cracked spark plug boots that cause grounding issues and power loss.

Specs At A Glance

Good To Know

Q: How do I confirm if my vehicle has square or round coils? A: Look closely at the metal bracket on your existing coils; square coils have a distinct boxy shape with visible mounting holes.

Q: Do these coils require any modifications to fit? A: They are direct bolt-on replacements designed to plug into your factory wiring harness without modification.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.