DENSO 3239 Double Platinum Spark Plug

The DENSO 3239 Double Platinum Spark Plug features platinum on both the center and ground electrodes, unlike conventional platinum plugs that only use platinum for the center electrode. This precious metal fights corrosion and erosion, ensuring superior spark performance and maximum spark plug life.

Key Features:

• 14mm thread size with 19mm (0.748 inch) reach and gasket seat design
• Copper core electrode for superior thermal conductivity
• 13/16 inch wrench diameter with resistor design
• 360 degree laser weld construction for durability
• Premium shell construction with machine-rolled threads
• Capable of extended operation in excess of 60,000 miles
• Heat range 16 for optimal performance

DENSO was the pioneer in introducing platinum spark plugs to the automotive aftermarket, and continues to deliver OE-quality ignition components. Every component that leaves a DENSO factory has been designed with precision, manufactured to the strictest OE standards or above, and subjected to rigorous safety and performance tests. This spark plug is sold individually and cross-references to DENSO P16R13.