Description
Overview:
The Genuine NGK BPR8ES Spark Plug (Stock No. 3923) is a resistor-type plug designed for dependable ignition in a wide range of petrol engines used in vehicles, plant, and garden machinery. Built with a copper-core centre electrode, a durable nickel alloy ground electrode, a white ceramic insulator, and a corrosion-resistant steel shell, it delivers a consistent spark for efficient combustion, easier starts, and smoother running. Key dimensions include M14 x 1.25 thread, 19mm reach (3/4"), 20.8mm hex (13/16"), and a standard gap of 0.8mm (0.031"). This is a Genuine NGK part, sold individually, and is suitable wherever BPR8ES is specified, including many motorcycles, generators, pumps, compactors, and marine applications.
Key Features:
- Genuine NGK component for assured quality and fit (MPN/Stock No. 3923).
- Resistor type to reduce electrical interference with ignition systems and electronics.
- Copper-core centre electrode for strong spark and effective heat dissipation.
- Nickel alloy ground electrode and robust ceramic insulator for long service life.
- Corrosion-resistant shell plating helps prevent seizure and eases removal.
- Reach: 19mm (3/4") for correct seating in compatible cylinder heads.
- Hex size: 20.8mm (13/16") for standard plug spanners and sockets.
- Thread: M14 x 1.25 (metric), widely used across many petrol engines.
- Factory gap: 0.8mm (0.031") for reliable ignition stability (adjust if required by the engine).
- Sold individually; suitable for routine maintenance and scheduled services.
Typical Applications:
Used where BPR8ES is specified on small to medium petrol engines, including motorcycles, scooters, ATVs, portable generators, water pumps, pressure washers, plate compactors, light plant equipment, and various marine outboards. Also seen on some garden tractors and ride-on mowers requiring an M14 x 1.25 thread with 19mm reach. Ideal for keeping engines starting reliably and running cleanly.
Also known as:
Spark igniter, engine plug, ignition plug, resistor plug, NGK 3923, BPR8ES plug.
Alternate Part Numbers:
BRISK LR12YC, 98079-58847, BRISKLR12YC, 09482-00239, E92070-1044, 0948200239, E920701044, 9807958847, OMC LR12YC, OMCLR12YC, 07-22846, 0722846, LR12ZC, OE116, RN6YC, RN6Y
Product Specifications
| L&S Part No. | BPR8ES |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | NGK |
| OEM No. | 3923 |
| Unit of Sale | 1 |
| Fits Brands | NGK |
| Key Features | - Resistor type reduces electrical interference in ignition systems - Copper-core electrode ensures strong spark and heat dissipation - M14 x 1.25 thread fits many petrol engines - 19mm reach for correct seating in cylinder heads - 0.8mm factory gap for reliable ignition stability |
