DENSO 3478 Iridium Long-Life Spark Plug

DENSO
DENSO 3478 Iridium Long-Life Spark Plug

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Part Number: 3478
Manufacturer: DENSO
On Sale: $14.69

Availability:
0 New In Stock
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Product Note:

Iridium Long-Life Spark Plug

Specs:

Center Electrode Core Material: Copper
Center Electrode Tip Material: Iridium-Rhodium Alloy
Gap Size: 0.044
Ground Configuration: Needle-to-Needle
Ground Electrode Core Material: Nickel
Ground Electrode Quantity: 1
Ground Electrode Tip Design: Platinum Needle
Hex Size: 16.0
Manufacturer Heat Range: 16
Reach: 26.50
Resistance: 5000
Seat Type: Gasket

First Automotive Plug to Use Iridium!

The DENSO Iridium Long Life plug is fast becoming the standard for today’s high-tech engines. Properties of DENSO’s patented Iridium alloy have broken through the spark plug technology barrier. Employing a revolutionary new 360° laser-welding process, DENSO has created a spark plug unlike anything on the market today. Designed for durability under the most extreme conditions, DENSO’s patented Iridium alloy is six times harder and eight times stronger than conventional Platinum and can handle temperatures in excess of 4,000°F. You’ll enjoy more horsepower, faster easier starts, less misfires under heavy loads, plus better conservation of fuel at all times!

Using the same laser welding process as the Iridium Power spark plug, DENSO designed a long life spark plug factory-installed on luxury vehicles by automakers such as GM, Toyota, Honda and Mitsubishi. Using its patented Iridium alloy, DENSO was able to shrink the center electrode to 0.7mm, dramatically improving ignitability and longevity.

Closely related to platinum and exhibiting even tougher qualities, the rare metal iridium is an ideal material for spark plugs. The DENSO Iridium Long Life plug was specifically designed for long service life and consistent performance in the latest, most advanced production cars. A fine-wire, 0.7mm iridium center electrode is 360-degree laser welded in place using an exclusive DENSO process, then matched to a platinum ground electrode. This pair of precision-formed, premium-metal electrodes dramatically extend the plug’s useful life. The DENSO Iridium Long Life plug has been selected as original equipment on many of the world’s top cars, including those from GM, Toyota, Honda, and Mitsubishi. There’s a simple reason for that: these manufacturers needed the best.

FEATURES

  • Fine-wire iridium center electrode
  • Platinum ground electrode
  • 360 degree laser-welded spark tip

BENEFITS

  • Sustained spark performance over 100,000 miles
  • Withstands higher pressures and temperatures
  • Reduced spark plug wear and erosion

Select Vehicle Above to Narrow Fitment Info!

Year Make Model Trim Engine Vehicle Fit Notes

Hyundai

 

Sonata

 

ALL

 
2.4L L4 NA GAS
 
Hyundai
Sonata
ALL

2.4L L4 NA GAS
Submodel: SE
w/ C Engine VIN
 

Hyundai

 

Sonata

 

ALL

 
2.4L L4 NA GAS
 
Hyundai
Sonata
ALL

2.4L L4 NA GAS
Submodel: GLS
w/ C Engine VIN
 

Hyundai

 

Sonata

 

ALL

 
2.4L L4 NA GAS
 
Hyundai
Sonata
ALL

2.4L L4 NA GAS
Submodel: LIMITED
w/ C Engine VIN
 

Hyundai

 

Sonata

 

ALL

 
2.4L L4 NA GAS
 
Hyundai
Sonata
ALL

2.4L L4 NA GAS
w/ C Engine VIN
 

Kia

 

Optima

 

ALL

 
2.4L L4 NA GAS
 
Kia
Optima
ALL

2.4L L4 NA GAS
Submodel: SX
w/ 7 Engine VIN
 

Kia

 

Optima

 

ALL

 
2.4L L4 NA GAS
 
Kia
Optima
ALL

2.4L L4 NA GAS
Submodel: EX
w/ 7 Engine VIN
 

Kia

 

Optima

 

ALL

 
2.4L L4 NA GAS
 
Kia
Optima
ALL

2.4L L4 NA GAS
Submodel: LX
w/ 7 Engine VIN
 

Kia

 

Sorento

 

ALL

 
2.4L L4 NA GAS
 
Kia
Sorento
ALL

2.4L L4 NA GAS
Submodel: LX
w/ 6 Engine VIN
 

Kia

 

Sorento

 

ALL

 
2.4L L4 NA GAS
 
Kia
Sorento
ALL

2.4L L4 NA GAS
Submodel: LX
w/ 1 Engine VIN
 

Kia

 

Sorento

 

ALL

 
2.4L L4 NA GAS
 
Kia
Sorento
ALL

2.4L L4 NA GAS
Submodel: EX
w/ 6 Engine VIN