NGK Spark Plugs NGK: V-Power Plug 4838

NGK BP8HN-10 Spark Plug

NGK V-Power Spark Plug is a replacement for Mercury Outboards. V-Power Spark Plugs feature a “V” cut in the center electrode that helps direct ignition spark to the edge of the electrode to aid spark development and increase ignitability.

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.

Part Number: BP8HN-10

Stock Number: 4838

Resistance (Ohm): 1

Ground configuration: Standard

Ground electrode core material: Nickel

Center electrode core material: Copper

Center electrode tip material: Nickel

Fits Mercury Outboards 1980-2002, Mariner Outboards 1985-2002

Replaces:

Quicksilver / Mercury 33-816737Q

Yamaha BP8-HS-100-00-00

Johnson / Evinrude 0509569

Frequently Asked Questions

• What is the NGK BP8HN-10 Spark Plug used for? The NGK BP8HN-10 Spark Plug is an NGK V-Power replacement spark plug for specified Mercury and Mariner outboards. Its V-cut center electrode is designed to direct the ignition spark toward the edge of the electrode to aid spark development and increase ignitability.
• What Mercury and Mariner outboards does the NGK BP8HN-10 fit? The NGK BP8HN-10 fits Mercury Outboards from 1980-2002 and Mariner Outboards from 1985-2002. Always verify the spark plug part number against your engine and maintenance manual before installation to confirm that it is the correct plug for your specific outboard.
• What are the specifications of the NGK BP8HN-10 Spark Plug? The NGK BP8HN-10 has NGK stock number 4838 and a resistance of 1 Ohm. It uses a standard ground configuration, nickel ground electrode core, copper center electrode core, and nickel center electrode tip.
• What does the V-cut center electrode do on the NGK BP8HN-10? The V-Power design incorporates a V cut in the center electrode. This directs the ignition spark toward the edge of the electrode, which is intended to aid spark development and increase ignitability in the applicable engine.
• What spark plugs does the NGK BP8HN-10 replace? The NGK BP8HN-10 replaces Quicksilver/Mercury 33-816737Q, Yamaha BP8-HS-100-00-00, and Johnson/Evinrude 0509569. Verify the replacement part number against your engine manufacturer's recommendation before using this spark plug.
• How do I verify that the NGK BP8HN-10 is the correct spark plug for my outboard? Check your engine and maintenance manual for the manufacturer's recommended spark plug and compare it with the NGK BP8HN-10. Using an incorrect spark plug can reduce optimum engine performance, reduce fuel economy, or cause engine damage, so the specified plug should be verified before installation.