Product Description
NGK TR7IX Iridium 3690 Spark Plugs - Set of 8
Fits 1997-2013 LS-Based V8 Engines 4.8L 5.3L 5.7L 6.0L 6.2L (through 2019 on L96)
2 Steps Colder than Stock LS Spark Plug Heat Range
These NGK TR7IX Iridium Spark Plugs are two heat ranges colder than the stock plugs for most LS car & truck engines. 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 .040"
- 2-step colder heat range than stock (recommended for turbo, supercharged, or nitrous applications)
- 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, .708" reach, 5/8" Hex
- One heat range colder than stock for LS7, LS9, LSA. Two steps colder than stock heat range for all other LS engines
- Sold as a set of 8 Spark Plugs
Fits: LS1 LS2 LS3 LS7 LS6 L99 LSA L92 L9H L94 L76 L77 LY6 L96 LFA LZ1 LY5 LMG LMF LH6 LC9 LY2 L20 L33 LQ4 LQ9 LR4 LM7 L59 LS4 LH8 LH9
