DENSO 5747 Iridium Racing Spark Plug - IAE01-32

The DENSO 5747 (IAE01-32) Iridium Racing Spark Plug is DENSO's top-tier performance spark plug, engineered for racing and high-performance tuned engines that demand the absolute best in ignition technology.

Key Features:

• Ultra-Fine 0.4mm Iridium-Rhodium Alloy Center Electrode — The world's smallest center electrode tip requires less voltage to fire and delivers superior ignition performance and throttle response
• 100% Pure Platinum 0.8mm Ground Electrode — Resists melting and wear under the extreme heat loads of high-output racing engines
• 360-Degree All-Around Laser Welding — Patented process bonds the iridium tip for maximum durability across all racing and driving conditions (U.S. Patent No. 6078129)
• Spark Cleaning Pocket Technology — A precision pocket around the tip clearance self-cleans carbon fouling and deposits by discharging and burning them off, maintaining consistent electrical resistance (DENSO Patent No. 2727558)
• Race-Grade Reinforced Insulator — Developed through extensive track testing, this strengthened insulator offers 20% greater mechanical strength than standard designs
• Built-In Monolithic Resistor — Blocks electromagnetic interference that could affect onboard electronics; compatible with all resistor types
• Anti-Corrosive Glossy Nickel Plating — The housing's nickel plating provides high corrosion resistance and eliminates thread seizing common with zinc-plated plugs, protecting the cylinder head plug socket
• Heat Range: 32 | Spark Position: 0.5mm | Spark Electrode Height: 2.1mm
• Individually Packaged in Protective Plastic Case — DENSO was the first spark plug manufacturer to individually case each plug, safeguarding the electrode during transport to the track

Cross-reference: OEM part number 267700-2940 / R6120-10.5. The DENSO 5747 delivers F1-derived ignition technology for serious competitors who refuse to compromise on performance.