These plugs are one step colder than stock for 5.7L engines (great for those that are heavily modded or running nitrous).
* Manufacturer Heat Range: 5
* Electrode Core Material: Copper
* Electrode Tip Material: Platinum
* Spark Plug Thread Size: 14mm
* Spark Plug Reach: 25mm
* Spark Plug Seat Style: Tapered
* Wrench Diameter: 5/8 in.
* Ground Strap Quantity: One
* NGK Part Number: LZTR5AGP
* Quantity: Set of 16