NGK 93961 LKAR7C-9 Standard Spark Plug
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Precision spark plug for smooth combustion
The NGK 93961 LKAR7C-9 Standard Spark Plug delivers reliable ignition for smooth combustion and consistent engine performance. Designed as a nickel resistor plug, it is built for efficient operation in high-performance marine 4-stroke engines. It is the factory-recommended spark plug for select Mercury and Mariner outboards.
NGK 93961 LKAR7C-9 Standard Spark Plug Features:
- Built to NGK standards for long life and consistent performance
- High-quality OEM replacement
- Trivalent metal plating for strong anti-corrosion and anti-seizing protection
- Corrugated ribs help prevent flashover
- Pure alumina silicate ceramic insulator for strength and efficient heat transfer
- Copper core aids heat dissipation
- Triple seals help prevent gas leakage
NGK 93961 LKAR7C-9 Standard Spark Plug Specifications:
Shell:
- Model Number: LKAR7C-9
- Part Number: 93961
- Thread Diameter: 12 mm
- Thread Pitch: 1.25 mm
- Seat Type: Gasket
- Reach: 26.5 mm (1.04")
- Hex Size: 14 mm (9/16")
- Terminal Type: Solid
- Gap: 0.9 mm (0.035")
Centre Electrode:
- Material: Nickel
- Type: Standard
- Size: 2.5 mm
- Design: Projected
Ground Electrode:
- Material: Nickel
- Type: Standard
- Quantity: 1
Electrical Performance:
- Resistor: Yes (5K Ohm)
- Heat Range: 7
Installation:
- Torque (Aluminium): 15-20 Nm (10.8-14.5 lb-ft)
- Torque (Cast iron): 15-24 Nm (10.8-18 lb-ft)
Compatible Mercury and Mariner Outboards:
- 175 HP to 300 HP 3.4L V6 and 4.6L V8 models
- Verado V8 series
- Racing models including 250R, 300R, and 450R
- V10 outboard platforms
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