NGK 5887 Laser Iridium Spark Plug IZFR5G Auto Outboard Mercury Mariner

5887 / IZFR5G - Laser Iridium Spark Plug by NGK Often specified as original equipment, NGK Laser Iridium spark plugs are the best combination of performance and longevity. Iridium tip is six (6) times harder than platinum providing the strongest ignitability and the longest life possible. Most Laser Iridium spark plugs feature a platinum pad on the ground electrode for even wear in DIS ignition systems. OE engineered for specific vehicle applications.

Direct replacement for Mercury part numbers: 33-889597001, 33-889597Q.

Thread Diameter: 14 mm
Thread Pitch: 1.25 mm
Seat Type: Gasket
Reach: 19 mm (3/4")
Hex Size: 5/8" (16 mm)
Terminal Type: Solid
Overall Height: ISO
Gap: .031" (0.8 mm)
Center Electrode
Material: Iridium
Type: Fine Wire
Size: 0.6 mm
Projection: Extended Projection
Ground Electrode
Material: Platinum
Type: Standard
Shape: Taper Cut
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 5
Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.
Electrode Material: Iridium
Insulator Type: Long Projection
Nominal Gap: 0.8 mm

• Mfg Part No: 5887 IZFR5G
• Related Part No: 5887 IZFR5G