Product Summary

Tapered Spark Plug Seat Style, 0.708" Spark Plug Reach

  • Designed to withstand severe mechanical and thermal shock created by high-performance crate engines
  • Features a tapered seat style with a plug reach of 0.708"
  • Core material is constructed of copper and the tip material is made from nickel alloy
  • TR4 plugs have a 5/8" wrench size with a 14mm thread pitch
  • Built with a projected-type insulator

Comes as a Kit

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Key Specs

BrandNGK
Thread Pitch14mm
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Need To Know

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Return Policy

Details

Every NGK spark plug is designed to withstand severe mechanical and thermal shock associated with these high-revving, high-compression race crate engines.

Set of 8.

Application

Specifications

KEY SPECS
BrandNGK
Thread Pitch14mm
GENERAL
Spark Plug Seat StyleTapered
Spark Plug Reach0.708"
ResistorYes
Insulator TypeProjected
Spark Plug Heat Range4
Core MaterialCopper
Tip MaterialNickel Alloy
Wrench Size5/8"
Sold in QuantityKit
NotesTR4 Plug

Questions & Answers

1 Question • 1 Answer

What do you recommend the gap be for these plugs?

by Jesse

• 4 months ago

1 answer

1 of 1 questions shown

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