Champion Iridium - the ultimate element. This spark plug's fine-wire iridium center and platinum ground electrodes provide the sharpest spark focus for maximum performance.
Champion Iridium - Maximum Performance. Premium Spark Plug
Iridium center electrode delivers maximum life
Fine-wire center electrode and V-trimmed for greater ignitability
V-trimmed ground electrode promotes sharper spark focus
Maintains stable operating temperature under all engine loads
Heat-Active alloy allows electrodes to reach optimal temperature quickly

 
ECOM Sub-brand
Sub-brand Name
Iridium
SPARK PLUGS
Plug Type
RS12WMPB4
Seat Type
Tapered
Hex Size (Inch)
0.625
Hex Size (MM)
15.880
Thread Size (Inch)
0.551
Thread Size (MM)
14.000
Thread Reach (Inch)
0.689
Taper Diameter (Inch)
0.25
Installed Height (Inch)
2.05
Insulator Projection (Inch)
0.12
Gap Style
J Gap
Gap (Inch)
0.050
Gap (MM)
1.27
Center Electrode Diameter (Inch)
0.103
Center Electrode Material
Iridium Firing Tip
Ground Electrode Material
Platinum Pad Surface
Ground Electrode Quantity
1
Classification
Champion Iridium
Resistor Plug
Yes
Resistor Type
FISS
Manufacturer Heat Range
12
Electrical Terminal Type
Non-Removable Nut

      Marine