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NGK standard plugs are constructed for longer life and optimum performance.
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

NGK standard plugs are constructed for longer life and optimum performance.

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

Shell
Thread Diameter: 14mm
Thread Pitch: 1.25mm
Seat Type: Gasket
Reach: 12.7mm (1/2")
Hex Size: 13/16" (21mm)
Terminal Type: Removable Nut
Overall Height: ISO
Gap: .039" (1.0mm)

Center Electrode
Material: Nickel
Type: Standard
Size: 2.5mm
Projection: Non-Projected

Ground Electrode
Material: Nickel
Type: Standard

Specifications
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 8
Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.

Shell
Thread Diameter: 10mm
Thread Pitch: 1.0mm
Seat Type: Gasket
Reach: 19mm (3/4")
Hex Size: 5/8" (16mm)
Terminal Type: Threaded Stud
Overall Height: ISO
Gap: .035" (0.9mm)

Center Electrode
Material: Iridium
Type:Fine Wire
Size: 0.6mm
Projection: Projected

Ground Electrode
Material: Nickel
Type: Standard
Shape: Taper Cut

Specifications
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 9
Features: 12.7mm Threaded Reach
Torque Specs: Cast Iron: 7.2-10.8 lb. ft. Aluminum: 7.2-8.7 lb. ft.

Shell
Thread Diameter: 14mm
Thread Pitch: 1.25mm
Seat Type: Gasket
Reach: 19mm (3/4")
Hex Size: 5/8" (16mm)
Terminal Type: Solid
Overall Height: ISO
Gap: .043" (1.1mm)

Center Electrode
Material: Platinum
Type: Fine Wire
Size: 1.0mm
Projection: Projected

Ground Electrode
Material: Nickel
Type: Standard
Quantity: 1

Specifications
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 6

Torque Specs
Cast Iron: 18-25.3 lb. ft.
Aluminum: 18-21.6 lb. ft.

Shell
Thread Diameter: 14mm
Thread Pitch: 1.25mm
Seat Type: Tapered
Reach: 18mm (.709")
Hex Size: 5/8" (16mm)
Terminal Type: Solid
Overall Height: ISO
Gap: .059" (1.5mm)

Center Electrode
Material: Platinum
Type: Fine Wire
Size: 0.6mm
Projection: Projected

Ground Electrode
Material: Nickel
Type: Standard
Shape: Trapezoid

Specifications
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 5
Features: 3.0mm Extended Metal Shell
Torque Specs: Cast Iron: 10.8-18 lb. ft. Aluminum: 7.2-14.5 lb. ft.

Shell
Thread Diameter: 12mm
Thread Pitch: 1.25mm
Seat Type: Gasket
Reach: 26.5mm (1.04")
Hex Size: 5/8" (16mm)
Terminal Type: Solid
Gap: .043" (1.1mm)

Center Electrode
Material: Iridium
Type: Fine Wire
Size: 0.6mm
Projection: Projected

Ground Electrode
Material: Nickel
Type: Standard
Shape: Taper Cut

Specifications
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 7
Features: Special Gasket
Torque Specs: Cast Iron: 10.8-18 lb. ft. Aluminum: 10.8-14.5 lb. ft.

Shell
Thread Diameter: 14mm
Thread Pitch: 1.25mm
Seat Type: Gasket
Reach: 12.7mm (1/2")
Hex Size: 13/16" (21mm)
Terminal Type: Removable Nut
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

Specifications
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 6
Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.

Center Electrode Core Material: Copper Core
Center Electrode Material: Nickel
Gap: 0.044"
Ground Configuration: Standard
Ground Electrode Core Material: Nickel Core
Ground Electrode Material: Nickel
Ground Electrode Quantity: 1
Ground Electrode Tip Design: Standard
Heat Range: 5
Hex Size: 0.625"
Hex Size: 16 mm
Insulator Height: 50.50 mm
Longevity: 30k Miles
Overall Height: ISO
Resistance: 5 kOhm
Spark Plug Seat Style: Flat
Thread Reach: 0.75"
Thread Size: 0.551"
Thread Size: 14 mm

Center Electrode Core Material: Copper Core
Center Electrode Material: Nickel
Gap: 0.044"
Ground Configuration: Standard
Ground Electrode Core Material: Nickel Core
Ground Electrode Material: Nickel
Ground Electrode Quantity: 1
Ground Electrode Tip Design: Standard
Heat Range: 5
Hex Size: 0.625"
Hex Size: 16 mm
Insulator Height: 50.50 mm
Longevity: 30k Miles
Overall Height: ISO
Resistance: 5 kOhm
Spark Plug Seat Style: Flat
Thread Reach: 0.75"
Thread Size: 0.551"
Thread Size: 14 mm

Center Electrode Core Material: Copper Core
Center Electrode Material: Nickel
Gap: 0.044"
Ground Configuration: Standard
Ground Electrode Core Material: Nickel Core
Ground Electrode Material: Nickel
Ground Electrode Quantity: 1
Ground Electrode Tip Design: Standard
Heat Range: 5
Hex Size: 0.625"
Hex Size: 16 mm
Insulator Height: 50.50 mm
Longevity: 30k Miles
Overall Height: ISO
Resistance: 5 kOhm
Spark Plug Seat Style: Flat
Thread Reach: 0.75"
Thread Size: 0.551"
Thread Size: 14 mm

Center Electrode Core Material: Copper Core
Center Electrode Tip Material: Nickel
Ground Configuration: Standard
Ground Electrode Core Material: Nickel Core
Ground Electrode Quantity: 1
Ground Electrode Tip Design: Standard
Hex Size: 5/8 in
Insulator Height: 50.50
Manufacturer Heat Range: 7
Pre-Gap Size: .032 in
Reach: .75 in
Resistance: 5000 Ohms
Seat Type: Flat
Thread Diameter: 10.00 mm