NGK LTR6IX-11 Iridium Spark Plugs #6509 - Set of 8
Fits 2014-Newer LT-Based V8 Engines 5.3L 6.2L L83 L86 LT1 LT4 L84 L87 L8B L82 L8T
These plugs are 1 heat range colder than stock for most LT Engines - Also fit BTR LS Canted Valve Heads
These NGK Iridium spark plugs are one heat range colder than the factory plugs for most Gen V LT-based car & truck engines. Ideal for use in mild turbocharged, supercharged or nitrous applications. Improved throttle response, superior anti-fouling and high-ignitability makes Iridium IX ideal for the performance enthusiast. Iridium's extremely high melting point is perfectly suited to today's high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability.
- Factory Pre-gapped to .044"
- Fine Iridium tip ensures high durability and a consistently stable spark
- Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines
- Cold-rolled threads prevent cross-threading and damage to cylinder heads
- Trivalent plating eliminates need for anti-seize on threads
- High-grade alumina silicate ceramic creates a stronger insulator to reduce dielectric punch-through
- Tapered ground electrode increases ignitability and minimizes quenching
- NGK spark plugs are tested to the highest OEM original equipment standards
- 14mm Thread, 25mm" reach, 5/8" Hex
- One heat range colder than stock spark plugs
Applications Include (Gasoline V8 Models Only):
- CADILLAC CTS-V 2016-2019
- CADILLAC ESCALADE 2015-2025
- CHEVROLET CAMARO 2016-2024
- CHEVROLET CORVETTE 2014-2019
- CHEVROLET EXPRESS 2500 2020-2025
- CHEVROLET EXPRESS 3500 2020-2025
- CHEVROLET SILVERADO 1500 2014-2025
- CHEVROLET SILVERADO 2500 2020-2025
- CHEVROLET SILVERADO 3500 2020-2025
- CHEVROLET SUBURBAN 2015-2025
- CHEVROLET SUBURBAN 3500 HD 2019-2022
- CHEVROLET TAHOE 2015-2025
- GMC SAVANA 2500 2020-2025
- GMC SAVANA 3500 2020-2025
- GMC SIERRA 1500 2014-2025
- GMC SIERRA 2500 2020-2025
- GMC SIERRA 3500 2020-2025
- GMC YUKON 2015-2025