TOYOTA 90919-01275 (3499) SC16HR11 IRIDIUM LONG LIFE SPARK PLUG
DENSO’s patented Iridium alloy is more durable than even Platinum, allowing the center electrode to be shrunk to only 0.7 mm in diameter. This produces a dramatic improvement in ignitability and spark plug life. DENSO’s Iridium Long Life spark plug is standard equipment with a number of automakers including GM, Toyota, Honda, and Mitsubishi.
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
Spark Plug Type Performance Differences

|
Resistance |
5000 Ohms |
Ground Electrode Tip Design |
Platinum Chip |
Ground Configuration |
Standard |
Ground Electrode Core Material |
Nickel |
Center Electrode Core Material |
Copper |
Center Electrode Tip Material |
Iridium-Rhodium Alloy |
Gap Size |
0.044″ |
Ground Electrode Quantity |
1 |
Hex Size |
14.3 mm |
Manufacturer Heat Range |
16 |
Seat Type |
Gasket |
Reach |
26.50 MM |
Alternate/OEM Part Number(s): SC16HR11 |
₵45
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Availability:
Out of stock
SKU:3499
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