NGK Standard Spark Plug 1633 - LMAR9D-J

Multi-Ground Electrodes Improve Ignition Capabilities and are Less Sensitive to Increased Voltage Requirements Due to Gap Growth.

Designed to Specific Manufacturer Ignition Requirements, NGK's Multi-Ground Plugs Maintain All the Features of Their Standard Plugs, Including:

• Corrugated Ribs to Prevent Flashover
• Pure Alumina Silicate Ceramic Insulator, Providing Superior Strength and Better Heat Transfer
• Copper Core to Aid in Heat Removal
• Triple Seals to Prevent Leakage
• Sold individually

Features

• Special Motorcycle Plug
• Multi-Ground
• Corrugated Ribs
• Copper Core

Shell

• Thread Size: 10mm
• Thread Pitch: 1.0mm
• Seat Type: Gasket
• Resistor: Yes
• Resistor Value: 5K Ohm
• Reach: 26.5mm (1.04")
• Hex Size: 9/16" (14mm)
• Terminal Type: Solid
• Overall Height: ISO
• Gap:. 031" (0.8mm)

Center Electrode

• Material: Nickel
• Type: Standard
• Size: 2.5mm
• Projection: Projected

Ground Electrode

• Material: Nickel
• Type: Multi-Ground
• Quantity: 2

Specifications

• Torque Specs: Cast Iron: 7.2-10.8 lb. ft. Aluminum: 7.2-8.7 lb. ft.
• Brand: NGK
• Heat Range: 9
• Longevity: 30k