14-23 GM LT1 6.2L Straight Boot Hi-Perf Coil-Near-Plug Ignition Wire Connector Kit - Blue - Granatelli Motor Sports

Your ignition coils are already producing serious energy—Granatelli 0-Ohm wires are built to make sure more of it reaches the spark plugs. The compact 10-inch design delivers a clean, direct coil-to-plug connection for performance-driven GM LS & LT builds.

The Granatelli 28-1545S 0-Ohm High-Performance Spark Plug Wire Set is engineered specifically for compatible GM LS & LT-Series V8 engines. Featuring true 0-Ohm resistance and a compact 10-inch wire length, this set is designed to maximize available ignition-energy transfer while keeping coil-to-plug routing clean and controlled.

A solid stainless-steel conductor, patented EMI/RFI suppression technology and secure snap-lock terminals combine to deliver strong, consistent spark performance without creating unwanted electrical interference with modern engine-management systems.

MORE SPARK ENERGY. LESS RESISTANCE.

TYPICAL 5–15 HP N/A • UP TO 35 HP BOOSTED

Granatelli reports typical gains of 5–15 horsepower on naturally aspirated applications, with gains of up to 35 horsepower possible on supercharged, turbocharged or nitrous combinations.

Key Features

• True 0-Ohm resistance for maximum available ignition-energy transfer
• Granatelli states up to 400% more spark energy at the plug compared with stock wires
• 10" wire length for compact coil-to-plug routing
• Designed for compatible GM LS & LT-Series V8 engines
• Solid stainless-steel conductor for consistent voltage delivery
• Patented EMI/RFI suppression ring – U.S. Patent 7,185,622
• Helps eliminate radio and electronic interference
• Snap-lock terminals provide a secure connection at the spark plug
• Excellent for tight coil-near-plug installations and relocated coils
• Can help improve throttle response and combustion efficiency
• Designed to help reduce ignition misfires
• Excellent for naturally aspirated, supercharged, turbocharged and nitrous combinations
• Pre-assembled with terminals and boots
• Direct-fit installation on compatible LS/LT coil-near-plug systems
• Complete V8 set – 8 spark plug wires
• Made in the USA

Easy Performance Upgrade: Part #28-1545S arrives pre-assembled with terminals and boots. On compatible LS/LT coil-near-plug applications, simply replace the existing wires—no cutting, trimming or custom wire assembly required.

Why 0-Ohm Matters

Traditional resistance-style spark plug wires consume part of the electrical energy generated by the ignition coil before it reaches the plug. Granatelli's true 0-Ohm technology is designed to minimize that loss and deliver more of the ignition system's available energy directly to the spark plug.

Up to 400% More Spark Energy at the Plug

Granatelli states that its 0-Ohm technology can provide up to 400% more spark energy to the plug than stock wires. Stronger available ignition energy can support improved combustion consistency, better throttle response and dependable performance as RPM and cylinder pressure increase.

10" Length for a Clean Installation

The compact 10-inch configuration is designed for coil-near-plug installations where the ignition coil is positioned relatively close to the spark plug. This helps reduce unnecessary wire slack and creates a cleaner, more direct ignition-wire layout.

Performance Without Electronic Interference

Extremely low resistance is only useful if the wire can also control electrical noise. Granatelli incorporates a patented EMI/RFI suppression ring that helps prevent unwanted interference while maintaining clean ignition signals for the ECU and other sensitive electronic systems.

Compatible GM LS & LT Applications

Granatelli specifically lists the following popular LS-family engines for part #28-1545S, while the product is also marketed for compatible GM LS & LT-Series coil-near-plug V8 applications.

Common Engine Sizes

Important Fitment Notice: Part #28-1545S uses a 10-inch wire configuration. Engine family or displacement alone does not guarantee physical fitment. Compare your existing wire length, ignition coil position, spark plug boot configuration and routing before ordering.

Fitment Recommendation: This set is designed for compatible GM LS & LT coil-near-plug ignition systems. Always verify your exact vehicle and ignition layout before installation, especially on engine swaps, relocated-coil setups and highly modified applications.