Denso U-Groove Resistor Spark Plug – X24ESR-U

• 100% pre-fired to ensure reliable operation
• Copper core center electrode for superior thermal conductivity
• Unique five-rib insulator reduces flashover and decreases voltage loss
• Dual copper and glass seal bonds the center electrode and insulator together for a gas-tight seal
• Ground electrode features a tapered cut and U-groove that form a large volume area for the flame's center
• 360° laser welding of electrode provides a seal that resists wear
• Iridium-grade hardness electrode tip; iridium does not melt in temperatures up to 4,000°F
• Electrode shrunk to 0.4 mm – reduced voltage requirements and improved firing performance

Specifications

• Spark Plug Code: X24ESR-U
• Thread Diameter: 12 mm
• Thread Reach: 19.1 mm (3/4 in.)
• Hex Size: 17.5 mm
• Spark Gap: 0.028 in. / 0.7 mm
• Heat Range: 24
• Center Electrode: Standard, Non-Projected
• Electrode Tip Material: Nickel Alloy
• Ground Electrode Shape: U-Groove
• Terminal Configuration: Threaded Stud
• Type: Resistor
• Quantity: Each

Fits the following:

• Suzuki DR125: 1985-1986
• Suzuki DR125SE: 1994-1996
• Suzuki DR250: 1991-1993