# DPR8EA-9 NGK Standard Resistor Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Standard Resistor Spark Plug – Part Number: DPR8EA-9**

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: 4929
-   Thread: 12 mm
-   Reach: 19 mm (3/4 in)
-   Hex: 18 mm
-   Seat: Gasket
-   Terminal: Threaded stud
-   Type: Projected, Wide Gap

## 🚘 Application

Listed in NGK's application charts for marine, motorcycle, ATV and snowmobile equipment. The chart shows a 1.0 mm gap for these engines, but check it against your engine's manual before fitting.

-   Bimota YB-5 (1200) – Motorcycle
-   Bimota DB2 (900) – Motorcycle
-   Cagiva ELEFANT 900 (900) – Motorcycle
-   Ducati 750 SS (750, 1993-1991) – Motorcycle
-   Honda GL1200 - GOLD WING (1200, 1984) – Motorcycle
-   Honda GL1200A - GOLD WING (1200, 1987-1984) – Motorcycle
-   Honda GL1200I - GOLD WING (1200, 1987-1984) – Motorcycle
-   Honda GL1200L - GOLD WING (1200, 1985) – Motorcycle
-   Honda GL1200SEI - GOLD WING (1200, 1986) – Motorcycle
-   Honda GL1100 - GOLD WING (1100, 1983-1982) – Motorcycle
-   Honda GL1100A - GOLD WING (1100, 1983-1982) – Motorcycle
-   Honda GL1100I - GOLD WING (1100, 1983-1982) – Motorcycle
-   Honda VF1100C (1100, 1986-1983) – Motorcycle
-   Honda VF1100S (1100, 1985-1984) – Motorcycle
-   Honda VF1000F (1000, 1984) – Motorcycle
-   Honda CB750 - NIGHTHAWK (750, 2003-1991) – Motorcycle
-   Honda VF750C (750, 1983-1982) – Motorcycle
-   Honda VF750C (750, 1988) – Motorcycle
-   Honda VF750CD (750, 2000-1998) – Motorcycle
-   Honda VF750F (750, 1984-1983) – Motorcycle
-   Honda VF750S (750, 1983-1982) – Motorcycle
-   Honda VT750C - SHADOW (750, 1983) – Motorcycle
-   Honda VT750CD - SHADOW (750, 2003-1998) – Motorcycle
-   Honda VT750CD2 - SHADOW (750, 2001-2000) – Motorcycle
-   Honda VT750DC - SHADOW SPIRIT (750, 2007-2001) – Motorcycle

That is the 25 most common of 173 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: 809, RA6HC, RA6Y, RA6YC, RAX94YC
-   DENSO: 4096, X24EPR-U9
-   Bosch: XR4DC
-   John Deere: TY26721

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 9.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 9.00 AUD | In stock |

## Images

- DPR8EA-9 NGK spark plug
- DPR8EA-9 NGK spark plug firing end

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/dpr8ea-9-ngk-standard-resistor-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03