NGK V-Power Spark Plug BP8H-N-10 (4838)

NGK V-Power plugs feature a unique v-cut in the center electrode that directs the spark to the edge of the electrode, helping the spark develop more rapidly, increasing ignitability and reducing quenching. Trivalent metal plating provides superior anti-corrosion and anti-seizing properties. Corrugated ribs prevent flashover. Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer. Copper core aids in heat removal. Triple seals prevent leakage.

Key benefits

VERIFY FITMENT
SPECIFICATIONS
Shell
Thread Diameter 14mm
Thread Pitch 1.25mm
Seat Type Gasket
Reach 12.7mm (1/2")
Hex Size 13/16" (21mm)
Terminal Type Solid
Overall Height JIS
Gap .039" (1.0mm)
FITMENT
Mercury Mariner OEM: 816737Q, 8167372, 8M0176615
6 HP 2-Stroke (1986-00), 8 HP 2-Stroke (1986-00), 9.9 HP 4-Stroke (1986-94), 18 HP (1981-83)
18 HP XD (1984-85), 20 HP 2-Stroke (20) (1986-00), 20 HP 2-Stroke (20 JET) (1995-00)
25 HP 2-Stroke (1993-00), 25 HP (1983-90), 25 HP (1986-92), 25 HP 2-Stroke (25 SeaPro)
25 HP XD (1984-86), 30 HP 2-Cyl. 2-Stroke (1995-00), 30 HP 3-Cyl. 2-Stroke (30JET) (1998-00)
30 HP 2-Cyl. 2-Stroke (30 SeaPro) (1995-00), 40 HP 2-Cyl. 2-Stroke (1995-00)
40 HP 3-Cyl. 2-Stroke (1998-00), 45 HP 3-Cyl. 2-Stroke JET (1995-00)
50 HP 3-Cyl. 2-Stroke (1991-00), 55 HP 3-Cyl. 2-Stroke (55 SeaPro) (1992-00)
60 HP 3-Cyl. 2-Stroke (1991-00), 60 HP BigFoot (1995-97)
60 HP 3-Cyl. 2-Stroke SeaPro (1995-00), 80 HP 4-Cyl. 2-Stroke (80JET) (1995-00)
100 HP (1988-99), 115 HP 4-Cyl. 2-Stroke (1989-00), 125 HP 4-Cyl. 2-Stroke (1994-00)
Mariner
100, 115, 125, 15 Marathon, 20, 20 Jet, 25, 25 Marathon, 30 14mm Plug
30 Jet, 30 Marathon, 40 14mm Plug, 40 Marathon, 45 Jet, 50 - 14mm Plug
55 Marathon, 6 14mm Plug, 60, 60 Big Foot, 60 Marathon, 8, 80 Jet
Mercury
100, 115, 125, 18 XD, 20 Jet, 25 Sea Pro, Super 15, 30 Sea Pro Jet
40, 40 Sea Pro, 45 Jet, 50, 55 Sea Pro, 60 Sea Pro Bigfoot
8, 80 Jet, 9.9