NGK 4623 DR5HS Standard Spark Plug.

NGK's Standard Plugs are Constructed for Longer Life and Optimum Performance.

Fits Honda outboard engines.

Specifications:

• Shell

• Thread Size: 12mm

• Thread Pitch: 1.25mm

• Seat Type: Gasket

• Resistor: Yes

• Resistor Value: 5K Ohm

• Reach: 12.7mm (1/2")

• Hex Size: 18mm

• Terminal Type: Threaded Stud

• Overall Height: ISO

• Gap: .028" (0.7mm)

• Center Electrode

• Material: Nickel

• Type: Standard

• Size: 2.5mm

• Projection: Non-Projected

• Ground Electrode

• Material: Nickel

• Type: Standard

• Quantity: 1

• Torque Specs: Cast Iron: 10.8-18 lb. ft. Aluminum: 10.8-14.5 lb. ft.

• Brand: NGK

• Heat Range: 5

• Longevity: 30k Miles

Mercury-Mercruiser 33-852868140 NGK DR5HS