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Thread Diameter: 14mm
Thread Pitch: 1.25mm
Seat Type: Gasket
Reach: 26.5mm (1.04")
Hex Size: 5/8" (16mm)
Terminal Type: Solid
Overall Height: ISO
Gap: .043" (1.1mm)
Center Electrode
Material: Iridium
Type: Fine Wire
Size: 0.6mm
Projection: Projected
Ground Electrode
Material: Platinum
Type: Standard
Quantity: 1
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 6
Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.
Electrode Material: Iridium
Insulator Type: Projected
Nominal Gap: 1.1 mm

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: Iridium
Type: Fine Wire
Size: 1.0mm
Projection: Projected
Ground Electrode
Material: Platinum
Type: Standard
Quantity: 1
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 6
Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.
Electrode Material: Iridium
Insulator Type: Projected
Nominal Gap: 1.1 mm

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: Iridium
Type: Fine Wire
Size: 0.6mm
Projection: Extended Projection

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

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

3521 CR9EIX NGK Spark Plug

Specifications
Center Electrode Core Material:
Copper Core
Center Electrode Tip Material:
Nickel
Electrode Core Material:
nickel
Electrode Tip Material:
nickel
Gap Size:
0.028 in
Ground Configuration:
Standard
Ground Electrode Core Material:
Nickel Core
Ground Electrode Quantity:
1
Ground Electrode Tip Design:
Standard
Ground Strap Quantity:
1
Hex Size:
3/4 in
Manufacturer Heat Range:
7
Reach:
9.5 mm
Resistor:
Yes
Seat Type:
Gasket
Shorty Spark Plug:
Yes
Spark Plug Approximate Resistor Value:
10K Ohm
Thread Diameter:
14 mm
Tip Configuration:
Solid
Type:
Standard
Wrench Diameter:
3/4 in

Specifications
Center Electrode Core Material:
Copper Core
Center Electrode Tip Material:
Nickel
Electrode Core Material:
nickel
Electrode Tip Material:
nickel
Gap Size:
0.032 in
Ground Configuration:
Standard
Ground Electrode Core Material:
Nickel Core
Ground Electrode Quantity:
1
Ground Electrode Tip Design:
Standard
Ground Strap Quantity:
1
Hex Size:
5/8 in
Manufacturer Heat Range:
9
Reach:
19 mm
Resistor:
Yes
Seat Type:
Gasket
Shorty Spark Plug:
No
Spark Plug Approximate Resistor Value:
5K Ohm
Thread Diameter:
10 mm
Tip Configuration:
Solid
Type:
Standard
Wrench Diameter:
5/8 in

Electrode Material: Platinum
Thread Size: 0.472"
Thread Reach: 26.5 mm
Ground Electrode Quantity: 1
Gap: 0.032"
Spark Plug Seat Style: Flat
Heat Range: 6
Thread Diameter: 12 mm
Overall Height: ISO
Resistance: 1 kOhm
Insulator Height: 50 mm
Center Electrode Core Material: Copper Core
Ground Configuration: Standard
Ground Electrode Core Material: Nickel Core
Ground Electrode Tip Design: Standard
Insulator Type: Projected
Nominal Gap: 0.8 mm
Heat Range: 7

Provide faster starts and quicker acceleration than a traditional plug
Ensure better fuel economy and lower emissions compared to an original plug
OE approved design
Laser welded platinum center electrode tip
Platinum disc welded to backside of ground electrode
Ideal for applications with DIS (Distributorless Ignition System) “waste spark” ignition systems that require double precious metal spark plugs
Manufactured using triple-gasket sealing process to prevent leakage through the shell
Alumina silicate insulator for strength and optimal heat transfer
Cold-rolled threads for easier removal and installation
Corrugated ribs eliminate misfire causing “flashover”
Superior anti-fouling
Trivalent metal plating

Center Electrode Core Material: Copper Core
Center Electrode Tip Material: Nickel
Electrode Core Material: nickel
Electrode Tip Material: nickel
Gap Size: 0.028 in
Ground Configuration: Standard
Ground Electrode Core Material: Nickel Core
Ground Electrode Quantity: 1
Ground Electrode Tip Design: Standard
Ground Strap Quantity: 1
Hex Size: 5/8 in
Manufacturer Heat Range: 6
Reach: 12.7 mm
Resistor: Yes
Seat Type: Gasket
Shorty Spark Plug: Yes
Spark Plug Approximate Resistor Value: 10K Ohm
Thread Diameter: 10 mm
Tip Configuration: Solid
Type: Standard
Wrench Diameter: 5/8 in

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: .031" (0.8mm)
Center Electrode
Material: Iridium
Type: Fine Wire
Size: 0.6mm
Projection: Projected
Ground Electrode
Material: Nickel
Type: Standard
Shape: Taper Cut
Quantity: 1
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 7
Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.
Electrode Material: Iridium
Insulator Type: Projected
Nominal Gap: 0.8 mm

Thread Diameter: 14mm
Thread Pitch: 1.25mm
Seat Type: Gasket
Reach: 26.5mm (1.04")
Hex Size: 5/8" (16mm)
Terminal Type: Solid
Overall Height: ISO
Gap: .043" (1.1mm)
Center Electrode
Material: Nickel
Type: V-Cut
Size: 2.5mm
Projection: Projected
Ground Electrode
Type: Standard
Quantity: 1
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 5
Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.
Electrode Material: Nickel
Insulator Type: Projected
Nominal Gap: 1.1 mm

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: .031" (0.8mm)
Center Electrode
Material: Iridium
Type: Fine Wire
Size: 0.6mm
Projection: Projected
Ground Electrode
Material: Nickel
Type: Standard
Shape: Taper Cut
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 8
Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.
Electrode Material: Iridium
Insulator Type: Projected
Nominal Gap: 0.8 mm

Center Electrode Core Material: Copper Core
Center Electrode Material: Nickel
Gap: 0.036"
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: 4/5"
Insulator Height: 55 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