Part Number: D640-0001

Description: Dinan Iridium Spark Plug - 12x26.5x14MM (Flat) - Heat Range 9

Center Electrode Core Material: Copper

Center Electrode Projection: Short Projection

Center Electrode Tip Material: Iridium

Electrical Terminal Type: Cup

Hex Size: 14

Hex Type: Bi-Hex

Insulator Material: Ceramic

Seat Type: Flat

Thread Diameter: 12

Notes: Sold as Individual

Fitment: 20-26 Toyota Supra 2.0T / 3.0T

Notes: Not for sale in California not CARB Legal

Details:

Dinan Iridium Spark Plugs are an excellent upgrade for tuned, and even stock engines. Our spark plugs are made from Iridium - one of the strongest materials available. They last longer than other materials with higher melting points, run cooler, resist preignition, and even require less voltage to produce a strong spark. The iridium electrode with its copper core is harder and stronger than other materials, can dissipate heat more easily, and is better protected from melting, cracking, and other limitations found with standard plugs.

Features and Benefits

• Heat range 9 spark plug (Similar: Bosch 3, Brisk 10, Champion 4, Denso 27, and NGK 9)

• 152% higher melting point than silver, 125% higher than copper, and 38% higher than platinum

• Stronger than copper and platinum

• Acceptable for high performance / tuned and stock vehicle applications alike

• Projected insulator design

• Lower required supplied voltage

• Cooler operating temperature than stock plugs

• Optimized electrode design for hard to ignite fuels, such as ethanol

• Resists preignition better than stock plugs

• An excellent match for Dinan ignition coils

• Thread reach: 26.5mm

• Thread diameter: 12mm

• Hexagon: 14mm Bi-Hex

• Terminal Type: Cup

• Seat Type: Flat

• Install Torque: 17 Nm

• Insulator Material: Ceramic

• Supplied Gap: 0.5mm

• 1 step colder than OEM (Gen 1 B48, Gen 1/2 B58, & S58)

• Made in the EU