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DENSO Spark Plug Iridium Long-Life

# 3439
1 YR REPLACEMENT IF DEFECTIVE
Part # 3439
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$19.79
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Part No. 3439
Warranty Details (1 YR REPLACEMENT IF DEFECTIVE)
Manufactured to the strictest OE performance, durability and emissions standards.

Product Features:
  • No-compromise, top of the line race spark plug for the most serious enthusiast.
  • Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
  • Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
  • Wide range of part numbers for thousands of applications, including classic and collector cars
  • Lasts twice as long as most conventional plugs
  • Withstands temperatures greater than 4000 Fahrenheit
Electrode Core Material:
Copper

Electrode Tip Material:
0.5mm Iridium

Ground Strap Quantity:
1

Insulator Type:
Purified Alumina

Manufacturer Heat Range:
20

Material:
0.5mm Iridium

Reach:
1.04 in

Resistor:
Yes

Seat Type:
Gasket

Thread Diameter:
12 mm

Tip Configuration:
0.5mm Iridium

Type:
Iridium Long Life

Wrench Diameter:
9/16 in
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