# BPR8ES NGK Standard Resistor Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Standard Resistor Spark Plug – Part Number: BPR8ES**

Spark plugs are a critical engine component, providing the spark that ignites the air-fuel mixture that drives an engine. NGK spark plugs feature trivalent plating – a silver/chrome-coloured finish on the threads – for corrosion resistance against moisture and chemicals, and are designed to meet or exceed OE standards.

## ⚙️ Key Features

-   Standard nickel centre electrode
-   Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
-   Corrugated ribs reduce the risk of flashover
-   Pure alumina silicate ceramic insulator, providing superior strength and better heat transfer
-   Copper core aids in heat removal
-   Triple seals prevent leakage

## 📏 Specifications

-   NGK stock number: 3923
-   Thread: 14 mm
-   Reach: 19 mm (3/4 in)
-   Hex: 20.8 mm (13/16 in)
-   Seat: Gasket
-   Type: Projected

## 🚘 Application

Listed in NGK's application charts for marine, motorcycle, ATV and snowmobile equipment and automotive vehicles. The gap is not the same on all of them – the chart lists between 0.5 mm and 1.0 mm depending on the engine, so check the line for yours.

-   Mercruiser 390 (8 CYL GM BIG BLOCK) – Inboard Engine
-   Polaris PRO 1200 (1200, 2001-2000) – Personal Watercraft
-   Polaris SLX (1200, 2001-2000) – Personal Watercraft
-   Polaris SL 1050 (1050, 1998-1997) – Personal Watercraft
-   Polaris SLTX (1050, 1999-1996) – Personal Watercraft
-   Polaris SLX (1050, 1999) – Personal Watercraft
-   Polaris SL 900 (900, 1997-1996) – Personal Watercraft
-   Polaris SL 780 (780, 1997-1996) – Personal Watercraft
-   Polaris SLT 780 (780, 1997-1996) – Personal Watercraft
-   Polaris SLX 780 (780, 1997-1996) – Personal Watercraft
-   Polaris FREEDOM (700, 2004-2002) – Personal Watercraft
-   Polaris HURRICANE (700, 1997-1996) – Personal Watercraft
-   Polaris SL 700 (700, 1998-1997) – Personal Watercraft
-   Polaris SLH (700, 2001-1999) – Personal Watercraft
-   Polaris SLTH (700, 1999) – Personal Watercraft
-   Polaris VIRAGE (700, 2004-2000) – Personal Watercraft
-   Aprilia MOJITO CUSTOM 50 2T - PIAGGIA (50, 2007-2004) – Motorcycle
-   Yamaha XJ700 (700, 1986) – Motorcycle
-   Ferrari 275 GT (1968) – 6-12 per engine
-   Ferrari 275 GTB (1968-1964) – 6-12 per engine
-   Ferrari 512 BB (1981-1977) – 6-12 per engine
-   Ferrari Dino 206 GT (1969-1968) – 6-12 per engine
-   Ferrari Dino 246 GT (1973-1969) – 6-12 per engine
-   Ferrari Dino 246 GTS (1973-1972) – 6-12 per engine
-   Maserati 430i (1990-1989) – 6-12 per engine

That is the 25 most common of 29 applications NGK's charts list for this plug – ask us to check yours.

## 🔄 Supersession & Cross Reference

NGK's cross-reference tables list this plug against these part numbers.

-   Champion: 8904, 8904-1, 8904-2, 904, RN4YC, RN6Y
-   DENSO: 3274, 4136, W24EPR, W24EPR-U, W24EPR-ZU
-   Autolite: 4261, AR51
-   Brisk: LR12YC, LR12ZC
-   Torch: F8RTC, F8TC
-   ACDelco: R41CXLS

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 10.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 10.00 AUD | In stock |

## Images

- BPR8ES NGK spark plug

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/bpr8es-ngk-standard-resistor-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03