# CR8EH-9 NGK Standard Resistor Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Standard Resistor Spark Plug – Part Number: CR8EH-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: 5666
-   Thread: 10 mm
-   Reach: 19 mm (3/4 in)
-   Hex: 16 mm (5/8 in)
-   Seat: Gasket
-   Terminal: Threaded stud
-   Type: Partial Thread, 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.

-   Honda ST1100 (1100, 2002-1991) – Motorcycle
-   Honda ST1100A (1100, 2002-1992) – Motorcycle
-   Honda CBR929RR (929, 2001-2000) – Motorcycle
-   Honda CB900F (919, 2007-2002) – Motorcycle
-   Honda CBR900RR (900, 1999-1993) – Motorcycle
-   Honda VFR800FI - INTERCEPTOR (800, 2001-1998) – Motorcycle
-   Honda VF750C - MAGNA (750, 2003-1994) – Motorcycle
-   Honda VF750CD (750, 1997-1995) – Motorcycle
-   Honda VFR750F (750, 1997-1990) – Motorcycle
-   Honda VFR750R - RC30 (750, 1990) – Motorcycle
-   Honda FSC600 - SILVER WING SCOOTER (600, 2013-2002) – Motorcycle
-   Honda CB400F CB-1 (400, 1990-1989) – Motorcycle
-   Honda VTR250 (250, 1990-1989) – Motorcycle
-   Honda XR250R (250, 2004-1996) – Motorcycle
-   Honda CRF150R, RB (150, 2009-2007) – Motorcycle
-   Honda CRF150R, RB (150, 2017-2012) – Motorcycle
-   Honda CRF150RB (150, 2014-2012) – Motorcycle
-   Honda PCX150 (150, 2015) – Motorcycle
-   Honda SH150I/D (150, 2010) – Motorcycle
-   Honda CHF50 - METROPOLITAN (50, 2009-2006) – Motorcycle
-   Honda CHF50/P - METROPOLITAN I & II SCOOTER (50, 2003-2002) – Motorcycle
-   Honda CHF50/S - METROPOLITAN (50, 2008-2006) – Motorcycle
-   Honda NPS50 - RUCKUS (50, 2009-2003) – Motorcycle
-   Honda NPS50 - RUCKUS (50, 2017-2011) – Motorcycle

## 🔄 Supersession & Cross Reference

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

-   DENSO: 4127, U24FER9
-   Champion: RGU94C
-   Torch: B8RH

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 13.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 13.00 AUD | In stock |

## Images

- CR8EH-9 NGK spark plug

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/cr8eh-9-ngk-standard-resistor-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03