NGK UR4 Spark Plug

NGK UR4 Spark Plug

NGK Standard Spark Plugs are proven technology that offer reliable performance. Standard spark plugs are treated with corrosion-resistant plating to ensure ease of installation and removal. The solid copper core offers superior heat dissipation, conductivity and broad heat range.  NGK Standard plugs are an OE cornerstone that has provided decades of reliable performance.

• Stock Number: 6630
• Resistance (Ohm): 5k
• Ground configuration: Semi-Surface Discharge
• Ground electrode core material: Nickel
• Center electrode core material: Copper
• Center Electrode Tip Material: Nickel
• Hex Size: 5/8"

Check your engine and maintenance manual for the correct spark plug and only use as recommended by your engine's original equipment manufacturer. Using the wrong plug can reducing optimum performance, reduce fuel economy or cause damage to your engine.

Frequently Asked Questions

What is the NGK UR4 Spark Plug used for?

The NGK UR4 Spark Plug is an NGK Standard spark plug designed to provide reliable performance using proven spark plug technology. It features a solid copper core for heat dissipation and conductivity, along with corrosion-resistant plating for easier installation and removal.

What are the specifications of the NGK UR4 Spark Plug?

The NGK UR4 has stock number 6630 and 5k Ohm resistance. It uses a semi-surface discharge ground configuration, nickel ground electrode core, copper center electrode core, nickel center electrode tip, and a 5/8-inch hex size.

What are the benefits of the copper core in the NGK UR4 Spark Plug?

The solid copper core in the NGK UR4 Spark Plug provides heat dissipation and conductivity across a broad heat range. The center electrode uses a copper core with a nickel tip, supporting the reliable performance associated with NGK Standard spark plugs.

Does the NGK UR4 Spark Plug have corrosion-resistant plating?

Yes. The NGK UR4 Spark Plug features corrosion-resistant plating. According to the product description, this treatment is designed to help provide ease of installation and removal while supporting the plug's use as an NGK Standard spark plug.

What is the ground configuration of the NGK UR4 Spark Plug?

The NGK UR4 Spark Plug uses a semi-surface discharge ground configuration. Its ground electrode core material is nickel, while the center electrode uses a copper core with a nickel tip.

How do I verify that the NGK UR4 is the correct spark plug for my engine?

Check your engine and maintenance manual to confirm the correct spark plug recommended by the engine's original equipment manufacturer. Using the wrong spark plug can reduce optimum performance or fuel economy and may cause engine damage, so verify the application before installation.

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