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Performance Engineered in the USA: Proven Gains for Street and Track Builds
The Kooks 11mm spark plug wires deliver maximum spark energy and RFI/EMI suppression for all GM LSX truck engines (LS1, LS2, LS3, LS6, LS7, L99, L76, L92, L94, L86, L87, etc.) in Silverado, Sierra, Escalade, and SUV applications. Featuring ultra-low 40 ohm/ft spiral-wound Kevlar core with 11mm silicone jacket and heat-resistant black ceramic boots rated to 600°F, these wires eliminate misfires and voltage loss even under extreme boost or nitrous conditions up to 1,500+ HP.
Custom-cut to exact OEM lengths with pre-installed 90° coil boots and 45° plug boots, the bright orange jacket adds a show-quality appearance while the double-layer silicone construction resists heat, oil, and abrasion. Direct bolt-on replacement for factory wires with perfect fitment on truck-style coil packs and cathedral/rectangular port heads.
For LS truck owners demanding reliable ignition performance with race-level durability and style, the Kooks 750205 wires are the complete high-voltage solution trusted on 1,000+ HP builds worldwide.
Key Features
- 11mm silicone jacket with 40 ohm/ft Kevlar spiral core
- 600°F-rated black ceramic boots
- Pre-installed 90° coil & 45° plug boots
- Custom lengths for LSX truck coil packs
- Maximum voltage delivery and supports 1,500+ HP
- Orange jacket with black boots for show quality
Product Notes
- Fits all GM LS-series truck engines (4.8L and 6.2L)
- Direct replacement and no modifications
- Includes 8 wires for V8
California Proposition 65: Contains chemicals known to the State of California to cause cancer or reproductive harm.
Warranty: Limited lifetime against manufacturing defects to original purchaser.
Installation Notes
- Professional installation recommended
- Remove one factory wire at a time
- • Route new wire following factory path
- Ensure boots fully seat on coil and plug
This Part Fits
| Engine | Application |
|---|---|
| LS1 / LS2 / LS3 / LS6 / LS7 | Silverado, Sierra, Escalade, Tahoe, Suburban |
| L99 / L76 / L92 / L94 / L86 / L87 | 1999 and 2024 GM Truck & SUV |
Note: Fits all LS-series truck/SUV applications with factory coil packs.
What's Included in the Purchase
- (8) 11mm Orange Spark Plug Wires w/ Black Ceramic Boots
- Part Number: Kooks 750205
Why Choose Kooks?
- Over 60 years of championship-winning ignition & exhaust engineering
- Designed specifically for high-horsepower LS builds
- Limited lifetime warranty on all components
Frequently Asked Questions
-
Q: Fits cathedral and rectangular port?
A: Yes, custom lengths for both head styles -
Q: Heat resistance?
A: Boots rated to 600°F, jacket to 550°F continuous -
Q: Coil-on-plug compatible?
A: Yes, perfect for truck-style coil packs -
Do Kooks headers require a tune after installation?
Yes. A professional tune is strongly recommended after installing long tube headers. The significant improvement in exhaust flow changes air fuel ratios and requires ECM recalibration to achieve optimal power output and safe operation. -
Will these headers void my factory powertrain warranty?
Under the Magnuson-Moss Warranty Act, a manufacturer cannot void your vehicle warranty simply because you installed an aftermarket part unless they prove the component directly caused the failure. Consult your dealer for specifics on your situation. -
Q: Do these Kooks headers require a tune after installation?
A: Yes. A professional tune is strongly recommended after installing long tube headers. The significant improvement in exhaust flow changes air fuel ratios and requires ECM recalibration to achieve optimal power output and safe operation. -
Q: Will Kooks headers void my factory powertrain warranty?
A: Under the Magnuson-Moss Warranty Act, a manufacturer cannot void your vehicle warranty simply because you installed an aftermarket part unless they prove the component directly caused the failure in question. Consult your dealer for specifics. -
Q: What warranty does Kooks provide?
A: Kooks products are backed by a limited lifetime warranty to the original purchaser against defects in materials and workmanship. Racing and competition use applications may have specific warranty exclusions. Contact Kooks Performance directly for warranty details.
Shipping & Handling
- Method: UPS or Fed Ex Ground.
- Availability: Typically ships same day or next if in stock.
- Packaging: Protective retail box.
Engine
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Spark Plug Wire Sets
Spark plug wire sets deliver ignition voltage from the coil or distributor to each spark plug, and Black Ops Auto Works stocks direct fit and universal sets for classic muscle cars, JDM imports, minivans, and modern performance platforms. Shop applications for Chevrolet Corvette and Camaro, Ford Taurus and Aerostar, Mercedes-Benz, Acura Integra, Nissan 300ZX and 200SX, Toyota Corolla AE86, and Jeep Wrangler. Sets are available in factory replacement and high performance configurations with multiple boot styles and wire gauges. Black Ops Auto Works carries 1,286 spark plug wire set SKUs. What This Category Covers This collection includes direct fit spark plug wire sets engineered for specific year, make, and model applications, along with universal HEI and non-HEI style sets that can be trimmed to fit a wide range of distributor and coil pack configurations. Direct Fit vs Universal Wire Sets Direct fit sets are molded to the exact length and routing of a specific vehicle, while u...
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