NGK Spark Plug 3923, OEM Equivalent BPR8ES, Fits Ski-Doo MKZ Sport 600cc Rotax EFI 2021-2022

The NGK Spark Plug 3923 is a standard nickel-electrode spark plug built around a solid copper core for reliable heat dissipation, conductivity, and a broad heat range. It is treated with corrosion-resistant plating that keeps installation and removal straightforward over repeated service intervals, and its ceramic insulator houses a copper-core center electrode with a nickel tip alongside a nickel standard ground electrode for consistent ignition performance. This plug corresponds to OEM equivalent part number BPR8ES and is rated at 5000 ohms of resistance, with a standard ground configuration and an M14x1.25 thread. As an NGK Standard plug, it is built to the same specification NGK uses for original-equipment applications, giving it comparable fit, spark quality, and durability to the factory plug it replaces. It is intended as a direct maintenance replacement for the 2021-2022 Ski-Doo MKZ Sport, powered by the 2 cylinder, 600cc, liquid-cooled 2-stroke Rotax EFI engine. Always confirm the recommended spark plug in your engine's maintenance manual before ordering, since installing the wrong plug can reduce performance and fuel economy or cause engine damage. Packaged as a single plug, NGK Spark Plug 3923 is a straightforward swap for scheduled tune-ups or replacing a fouled or worn plug.

Specifications

• Brand: NGK
• Manufacturer Part Number: 3923
• OEM Equivalent Part Number: BPR8ES
• Resistance: 5000 ohms
• Ground Configuration: Standard
• Ground Electrode Core Material: Nickel
• Center Electrode Core Material: Copper
• Center Electrode Tip Material: Nickel
• Thread Size: M14x1.25
• Top Material Type: Ceramic
• UPC: 087295139233
• Unit Count: 1 count
• Weight: 0.15 pounds

Fitment

• Ski-Doo MKZ Sport (2 cylinder, 600cc, liquid-cooled 2-stroke Rotax EFI), 2021-2022

Replaces (OEM)

• BPR8ES

Frequently Asked Questions

What does NGK spark plug 3923 replace? NGK Spark Plug 3923 corresponds to OEM equivalent part number BPR8ES, so it is the correct replacement wherever that plug is specified.

Is BPR8ES the same plug as NGK 3923? Yes, BPR8ES is the OEM equivalent part number for NGK Spark Plug 3923; both designations refer to the same plug.

What engine does the NGK 3923 spark plug fit? It fits the 2021-2022 Ski-Doo MKZ Sport, which uses a 2 cylinder, 600cc, liquid-cooled 2-stroke Rotax EFI engine.

What thread size does this spark plug use? NGK Spark Plug 3923 has an M14x1.25 thread size.

What is the resistance rating of the NGK 3923 spark plug? This plug carries a 5000 ohm resistance rating with a standard ground configuration.

What materials are used in the electrodes? The NGK 3923 uses a copper-core center electrode with a nickel tip and a nickel standard ground electrode, set in a ceramic insulator.

How many spark plugs are included? NGK Spark Plug 3923 is sold as a single plug, 1 count per pack.

Is this a genuine NGK spark plug? Yes, this is a genuine NGK Standard spark plug, built to NGK's original-equipment specification rather than a generic aftermarket copy.

Will corrosion make this plug hard to remove later? NGK Spark Plug 3923 is treated with corrosion-resistant plating specifically to keep future installation and removal easy.

How do I know if I should replace my spark plug with this one? Check your engine's maintenance manual for the recommended spark plug; if it calls for BPR8ES or NGK stock number 3923, this plug is the correct match for the Ski-Doo MKZ Sport's Rotax EFI engine.

Can I use NGK 3923 in an engine other than the listed fitment? Only the 2021-2022 Ski-Doo MKZ Sport with the 2 cylinder, 600cc, liquid-cooled 2-stroke Rotax EFI engine is listed as a confirmed fit for this plug; always verify against your own engine's manual before use elsewhere.

Why does the wrong spark plug matter for engine performance? Using an incorrect plug instead of NGK 3923 (BPR8ES) can reduce optimum performance, lower fuel economy, or cause engine damage, so matching the manufacturer-specified plug is important.