99-23 GM LS2/LS3/LSA/LS7/LS9 Hi-Perf Coil-Near-Plug Wire Conn Kit w/Blk Jacket - Granatelli Motor Sports

Built for tight engine bays and serious ignition performance, Granatelli 8-inch 0-Ohm black spark plug wires deliver a compact coil-to-plug connection with the heat resistance and spark transfer your LS or LT build demands.

The Granatelli 28-1811HTB 0-Ohm High-Performance Spark Plug Wire Set is engineered for applications where every inch of routing space matters. With a true 8-inch boot-to-boot length, these wires help eliminate unnecessary slack while maintaining strong, consistent ignition-energy transfer.

Built with 8mm black high-temperature silicone insulation rated for temperatures over 500°F and a spiral-wound stainless-steel core, the 28-1811HTB combines heat resistance, EMI/RFI suppression and Granatelli 0-Ohm performance in a compact, stealth-black package.

COMPACT WIRE. SERIOUS SPARK.

GUARANTEED 5–10 HP GAIN

Naturally aspirated applications can see a measurable horsepower increase, while supercharged, turbocharged and nitrous combinations may see even greater gains.

Key Features

• True 0-Ohm resistance for maximum available ignition-energy transfer
• 8" overall length – measured boot end to boot end
• 8mm black high-temperature silicone insulation
• Designed to withstand temperatures over 500°F
• Spiral-wound stainless-steel core helps suppress EMI & RFI interference
• Designed for compatible GM LS & LT coil-near-plug ignition applications
• Compact 8-inch configuration helps eliminate excess wire slack
• Ideal for tight engine bays, custom routing and relocated ignition systems
• OE-style fit and finish
• Compatible with modern ECUs and aftermarket tuning systems
• Excellent for naturally aspirated, supercharged, turbocharged and nitrous applications
• Pre-assembled – no cutting, trimming or crimping required
• Complete V8 set – 8 wires
• Made in the USA

Built for Tight Installations: At only 8 inches from boot end to boot end, these wires are ideal when the ignition coils are positioned close to the spark plugs. The compact design helps keep routing tight, clean and controlled without unnecessary excess wire.

Maximum Spark Transfer in Only 8 Inches

Granatelli's 0-Ohm conductor design is engineered to minimize resistance between the ignition coil and spark plug so the maximum available coil output reaches the plug. Strong spark delivery becomes increasingly important as RPM, cylinder pressure, boost and horsepower increase.

Clean Routing for Performance Builds

Longer-than-needed ignition wires can create unnecessary loops, clutter and routing problems. The 8-inch boot-to-boot length makes the 28-1811HTB an excellent choice for compact coil-near-plug layouts, LS swaps, custom engine bays and applications with relocated ignition coils positioned close to the plugs.

High-Temperature Black Silicone Construction

Headers and performance exhaust systems can expose ignition wires to intense under-hood temperatures. The 8mm black silicone jackets are rated to withstand temperatures over 500°F while providing dependable protection against heat, vibration and demanding operating conditions.

Compatible GM LS & LT Applications

Designed for compatible GM coil-near-plug ignition applications using the correct 8-inch boot-end-to-boot-end wire configuration. Granatelli specifically identifies several popular LS-family engines for this wire set.

Common Engine Sizes

Important Fitment Notice: These wires measure 8 inches from boot end to boot end. Engine family or displacement alone does not guarantee physical fitment. Compare your existing wire length, ignition coil location, spark plug boot configuration and routing before ordering.

Heat Notice: The high-temperature silicone construction provides increased heat protection, but proper clearance from headers and other extremely hot exhaust components is still recommended whenever possible.