NGK 2422 BUH Spark Plug, Surface Discharge, Fits 1971-1967 Mercury Outboard

The NGK 2422 BUH is a standard spark plug built with a solid copper core for efficient heat dissipation, strong conductivity, and a broad heat range. It is designed for reliable ignition performance and is treated with corrosion-resistant plating to keep installation and removal easy over the plug's service life.

The BUH uses a surface discharge ground electrode configuration, with a nickel ground electrode core, a copper center electrode core, and a nickel center electrode tip. It carries a rated resistance of 1 Ohm. This plug is intended for Mercury outboard engines, 1971-1967, and should be matched against your engine and maintenance manual before installation, since using the wrong plug can reduce performance and fuel economy or cause engine damage.

Specifications

• Brand: NGK
• Manufacturer Part Number: 2422
• NGK Part Number: BUH
• UPC: 087295124222
• Ground Configuration: Surface Discharge
• Ground Electrode Core Material: Nickel
• Center Electrode Core Material: Copper
• Center Electrode Tip Material: Nickel
• Resistance: 1 Ohm
• Weight: 0.15 pounds

Fitment

• Outboard - Mercury, 1971-1967

Frequently Asked Questions

What engines does the NGK 2422 BUH spark plug fit? The NGK 2422 BUH spark plug fits Mercury outboard engines, 1971-1967. Always check your engine and maintenance manual to confirm the correct plug for your specific engine before ordering.

Is the NGK 2422 the same as the NGK BUH? Yes. 2422 and BUH refer to the same NGK spark plug, a standard surface discharge plug built with a copper core and nickel electrodes.

What is the ground electrode configuration on this plug? The NGK BUH (2422) uses a surface discharge ground electrode configuration rather than a standard ground electrode design.

What materials are used in the NGK 2422 spark plug? This plug has a copper center electrode core, a nickel center electrode tip, and a nickel ground electrode core, combined with corrosion-resistant plating on the exterior.

What is the resistance rating of the NGK BUH spark plug? The NGK BUH (2422) carries a resistance rating of 1 Ohm.

How much does the NGK 2422 spark plug weigh? The NGK 2422 BUH spark plug weighs 0.15 pounds.

Why does this spark plug have a copper core? The solid copper core in the NGK BUH improves heat dissipation and conductivity, which helps the plug maintain a broad, stable heat range during operation.

Does the NGK 2422 resist corrosion? Yes. The NGK BUH (2422) is treated with corrosion-resistant plating that eases installation and removal over time.

Can I use the NGK 2422 in an engine outside the 1971-1967 Mercury outboard range? The NGK 2422 BUH is listed for Mercury outboard engines from 1971-1967; for any other engine, check your engine and maintenance manual to confirm the correct plug, since using the wrong plug can reduce performance or damage the engine.

Is the NGK 2422 spark plug genuine NGK or aftermarket? The 2422 is a genuine NGK Standard spark plug, part number BUH, not a third-party aftermarket equivalent.

What happens if I install the wrong spark plug in my outboard? Installing a plug other than the correct one for your engine, such as using the NGK 2422 BUH outside its listed Mercury outboard fitment, can reduce optimum performance, lower fuel economy, or cause engine damage.