NGK 7829 Standard Spark Plug BP7HS-10 for Mercury, Nissan and Tohatsu Outboards

The NGK 7829 is a Standard spark plug (type BP7HS-10) built for outboard engines, using proven NGK technology for reliable ignition performance. The plug is treated with corrosion-resistant plating that makes installation and removal easier over the life of the engine, and its solid copper core electrode delivers strong heat dissipation and conductivity across a broad heat range. This construction pairing, nickel-plated ground and tip electrodes with a copper core, is designed to hold up to the vibration, moisture, and load cycles typical of marine outboard use.

NGK Standard plugs are positioned as an OE cornerstone, meaning this design and construction have provided decades of consistent performance in outboard applications. The BP7HS-10 has an electrical resistance of 1 ohm and uses a standard ground configuration. This spark plug is intended as a direct fit for the outboard engines listed below; always confirm the correct plug against your engine and maintenance manual, since installing the wrong plug can reduce performance, hurt fuel economy, or damage the engine.

Specifications

• Brand: NGK
• Manufacturer Part Number: 7829
• Spark Plug Type: BP7HS-10
• UPC: 087295178294
• Resistance: 1 ohm
• Ground Configuration: Standard Ground
• Ground Electrode Core Material: Nickel
• Center Electrode Core Material: Copper
• Center Electrode Tip Material: Nickel
• Thread Size: 14mm x 1.25
• Weight: 0.15 pounds

Fitment

• Outboard - Mercury, years 1982-1980
• Outboard - Nissan, years 1996-1985
• Outboard - Tohatsu, years 1996-1983

Frequently Asked Questions

What engines does the NGK 7829 spark plug fit? The NGK 7829 (BP7HS-10) fits outboard engines from Mercury (years 1982-1980), Nissan (years 1996-1985), and Tohatsu (years 1996-1983). Always check your engine and maintenance manual to confirm this is the correct plug before ordering.

Is the NGK 7829 the same as the BP7HS-10? Yes, NGK 7829 is the part number for the NGK BP7HS-10 Standard spark plug; the two designations refer to the same product.

What is the electrical resistance of this spark plug? The NGK 7829 has an electrical resistance of 1 ohm, using a standard ground electrode configuration.

What materials are used in the NGK 7829 spark plug? This plug uses a nickel ground electrode, a copper center electrode core, and a nickel center electrode tip, a combination chosen for heat dissipation and conductivity.

How much does the NGK 7829 spark plug weigh? The NGK 7829 spark plug weighs 0.15 pounds.

What thread size does the NGK 7829 use? The NGK 7829 (BP7HS-10) has a 14mm x 1.25 thread size.

Is this a genuine NGK spark plug or an aftermarket copy? The 7829 is a genuine NGK Standard spark plug, part of NGK's own Standard plug lineup rather than a third-party copy.

Does the NGK 7829 require anti-seize compound before installation? The plug is treated with corrosion-resistant plating designed to ease installation and removal; check your engine manual for the manufacturer's specific torque and anti-seize recommendations.

Can I use the NGK 7829 in a Yamaha or Force outboard? No. The 7829 (BP7HS-10) is fit for Mercury, Nissan, and Tohatsu outboards only; Yamaha and Force outboards use a different NGK plug.

How many spark plugs come in a package? The NGK 7829 is sold as a single spark plug per package.

What happens if I install the wrong spark plug in my outboard? Using an incorrect spark plug, rather than the correct NGK 7829 (BP7HS-10) for your engine, can reduce performance, lower fuel economy, or cause engine damage, so always confirm fitment against your engine's manual first.

What is the core material that helps this plug dissipate heat? The NGK 7829 uses a solid copper core, which NGK states offers superior heat dissipation, conductivity, and a broad heat range.