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Vehicle Info NeededDENSOPART NUMBER: 313-5731
Iridium Racing IXU01-27 Spark Plug Heat Range: 27
$3799
Ships on Sep 16, 2026
Lowest Price Guarantee12mm Thread x .750'' Reach
5/8'' Hex
Non-Projected Tip
Gasket Seat
IXU-Series plugs have a special hardened purified alumina powder insulator for increased strength and thermal conductivity for hard core racing applications.
5/8'' Hex
Non-Projected Tip
Gasket Seat
IXU-Series plugs have a special hardened purified alumina powder insulator for increased strength and thermal conductivity for hard core racing applications.
- Iridium Racing IXU01-27 Spark Plug
- Heat Range: 27
- -0.5mm Insulator Projection
Sold Individually - 0.4mm Iridium Tipped Laser Welded Fine Wire Center Electrode
- Tapered Cut U-Groove Ground Electrode
- Special Hardened Insulator is 20% Stronger for Hard Core Racing Applications
- Patented Self Cleaning Electrode Design
- Silicone Oil Coated Insulator to Repel Moisture and Carbon Buildup
- Handles Extreme Compression and Boost Levels
- Machine Rolled Threads Prevent Seizing or Cross Threading During Installation and Removal
- 100% Pre-Fired to Assure the Highest Quality Possible
- Purified Alumina Powder Insulator Provides Exceptional Strength and Thermal Conductivity
- Five Rib Insulator Prevents Flashover
- Copper-Glass Seal Bonds Center Electrode and Insulator for a Gas-Tight Seal
Part TypeSpark Plug
BrandDENSO
Package Height1.0
Package Width1.0
Package Length4.0
Weight0.15 PG
Part CategoryReplacement Parts
Part FitmentDirect Fit
Vendor Part Number5731
Package Qty1
Package TypeEA
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