NGK 2359 Standard Marine Spark Plug BPR5EFS-13, Surface Discharge, Interchange Mercury 33-8M0095454

The NGK 2359 is a standard nickel spark plug built on NGK's proven surface discharge design, offering reliable ignition performance for engines that call for this plug type. It uses a solid copper core center electrode for superior heat dissipation, broad heat range, and consistent conductivity, paired with a nickel center electrode tip and a standard nickel ground electrode for dependable, repeatable sparking over the plug's service life. The plug body is treated with corrosion-resistant plating, which keeps threads and contact surfaces from seizing so the plug installs and removes cleanly at service time. As a surface discharge design, the NGK 2359 is built as an OE cornerstone plug, carrying forward decades of proven NGK ignition technology rather than an experimental or novelty design. It carries a resistance rating of 5,000 ohms to help suppress ignition noise. The NGK 2359 is interchangeable with Mercury part number 33-8M0095454, making it a straightforward replacement option where that Mercury number is specified. It ships sold individually, so order the quantity that matches your engine's cylinder count. Always check your engine and maintenance manual for the correct spark plug and only use plugs recommended by your engine's original equipment manufacturer, since using the wrong plug can reduce performance, lower fuel economy, or cause engine damage.

Specifications

• Brand: NGK
• Manufacturer Part Number: 2359
• Ground Configuration: Surface Discharge
• Resistance: 5,000 ohms
• Ground Electrode Core Material: Nickel
• Center Electrode Core Material: Copper
• Center Electrode Tip Material: Nickel
• UPC: 087295123591
• Weight: 0.15 pounds
• Quantity: Sold individually
• OEM Cross Reference: Mercury 33-8M0095454

Fitment

Interchangeable with Mercury part number 33-8M0095454. Always confirm against your engine and maintenance manual before ordering.

Replaces (OEM)

• Mercury 33-8M0095454

Frequently Asked Questions

What is the NGK 2359 spark plug? The NGK 2359 is a standard nickel spark plug with a surface discharge ground configuration, built with a solid copper core center electrode for heat dissipation and reliable conductivity.

Is the NGK 2359 the same as the NGK BPR5EFS-13? Yes, the NGK 2359 is the stock number for the NGK BPR5EFS-13 spark plug; both refer to the same surface discharge plug with a copper core center electrode.

What does the NGK 2359 replace or cross to? The NGK 2359 spark plug is interchangeable with Mercury part number 33-8M0095454.

Is the NGK 2359 a genuine NGK part or aftermarket? The NGK 2359 is a genuine NGK Standard spark plug, not an aftermarket reproduction, and carries NGK's OE-grade construction.

What is the resistance rating of the NGK 2359 spark plug? The NGK 2359 spark plug has a resistance rating of 5,000 ohms, which helps suppress ignition noise.

What materials are used in the NGK 2359 electrodes? The NGK 2359 uses a copper core center electrode with a nickel tip, and a standard nickel ground electrode.

How many spark plugs come in the package? The NGK 2359 is sold individually, so one spark plug ships per unit; order enough to match your engine's cylinder count.

How much does the NGK 2359 spark plug weigh? The NGK 2359 spark plug weighs 0.15 pounds.

What ground configuration does the NGK 2359 use? Surface discharge is the ground configuration used on the NGK 2359, which differs from a standard J-gap ground electrode design.

Does the NGK 2359 have corrosion-resistant plating? Yes, the NGK 2359 is treated with corrosion-resistant plating on the shell to make installation and future removal easier.

How do I know if the NGK 2359 is the correct spark plug for my engine? Check your engine and maintenance manual for the specific spark plug it calls for, and only install a plug recommended by your engine's original equipment manufacturer; the NGK 2359 cross-references to Mercury 33-8M0095454.

What is the UPC for the NGK 2359 spark plug? The UPC for the NGK 2359 spark plug is 087295123591.