Granatelli GM LS & LT 0-Ohm 12" Red High-Temp Kevlar-Boot Coil-Near-Plug Spark Plug Wires – 28-1629HTRB

Granatelli GM LS & LT 0-Ohm 12" Red High-Temp Spark Plug Wires w/ Black Kevlar Boots – 28-1629HTRB

Upgrade your GM LS or LT ignition system with the Granatelli Motor Sports 28-1629HTRB 0-Ohm High-Performance Spark Plug Wire Set. Designed to transfer maximum available ignition energy from the coil directly to the spark plug, these wires are an easy performance upgrade for stock, modified and high-horsepower applications.

Also fits

• 2020–2026 Chevrolet Silverado 2500 HD & 3500 HD 6.6L V8
• 2020–2026 GMC Sierra 2500 HD & 3500 HD 6.6L V8

Each wire measures 12 inches from boot end to boot end and features red high-temperature silicone wire with black Kevlar spark plug boots for added protection in demanding engine bays where headers, turbo systems and high exhaust temperatures can quickly overwhelm standard plug wires.

MORE SPARK. MORE POWER.

DYNO-TESTED GAINS ON GM V8 POWER

Granatelli ignition is proven on the dyno. In LSX Magazine's Project C700 test, a ProCharged LT1 Corvette gained 19.26 rwhp and 18.73 lb-ft after switching to Granatelli coils and 0-ohm coil-near-plug wires, with nothing else changed. See the LSX Magazine dyno test. Results vary with the engine, tune and combination.

Key Features

• 0-ohm conductor design for maximum ignition-energy transfer
• 12" overall length – measured boot end to boot end
• Red high-temperature silicone wire construction
• 8mm silicone jacket designed to withstand 800°F+ radiant heat
• Black Kevlar spark plug boots for increased durability and heat protection
• Spiral-wound stainless-steel core helps suppress EMI & RFI interference
• Designed for compatible GM LS & LT coil-near-plug ignition systems
• Excellent for naturally aspirated, supercharged, turbocharged and nitrous applications
• Ideal for vehicles equipped with aftermarket headers
• Pre-assembled and ready to install
• Simple direct-replacement installation
• Complete V8 set – 8 wires
• Made in the USA

Easy Bolt-On Performance: Remove your existing spark plug wires and replace them with the Granatelli 0-Ohm wires. No complicated ignition conversion, trimming or custom wire assembly is required. The longer 12-inch boot-to-boot length also provides additional routing flexibility for applications where a shorter wire may not be ideal.

Built for High-Heat Applications

Aftermarket headers, turbochargers and performance exhaust systems can place spark plug wires extremely close to high-temperature surfaces. The combination of red high-temp silicone construction and black Kevlar boots provides added protection for demanding street, strip and race applications while maintaining a clean performance appearance under the hood.

Compatible GM LS & LT Engine Families

Designed for many compatible GM LS and LT engines using the correct coil-near-plug layout and 12-inch boot-end-to-boot-end wire configuration.

Common Engine Sizes

Important Fitment Notice: Engine code or displacement alone does not guarantee fitment. These wires measure 12 inches from boot end to boot end. Compare your existing wire length, coil location, spark plug boot configuration and routing before ordering.

Heat Notice: The high-temperature silicone construction and black Kevlar boots provide increased heat protection, but the wires should still be routed with proper clearance from headers and other extremely hot exhaust components whenever possible.