# BPR6EIX-11 NGK Iridium Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Iridium Spark Plug – Part Number: BPR6EIX-11**

Iridium NGK spark plugs offer a longer service life than a standard nickel-tipped spark plug: while nickel-alloy plugs offer a service life of roughly 20,000-40,000km, NGK Iridium IX spark plugs offer a service life of up to 60,000km, so fewer replacements are needed over time despite the higher initial cost.

Precious-metal spark plugs like the NGK Iridium IX also offer higher ignitability, achieved with an exposed fine-tip centre electrode that promotes superior flame growth compared with a standard spark plug. Iridium has a much higher melting point (2410°C) than nickel (1453°C), allowing the centre electrode diameter to be reduced from 2.5mm to 0.6mm – a smaller electrode mass that reduces the impedance to flame progress, helping acceleration, fuel consumption and idle quality.

## ⚙️ Key Features

-   Fine iridium-tipped centre electrode for a slow wear rate and stable idle
-   Longer service life than standard nickel plugs
-   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: 3903
-   Thread: 14 mm
-   Reach: 19 mm (3/4 in)
-   Hex: 20.8 mm (13/16 in)
-   Seat: Gasket
-   Terminal: Solid
-   Type: Projected, Wide Gap

## 🚘 Application

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

-   Harley-Davidson XR (1000, 1985-1983) – Motorcycle
-   Brister BRISTER'S CHUCK WAGON (11 HP) – ATV
-   Chevrolet Metro (1992) – 3-6 per engine
-   Chevrolet Metro (2000-1998) – 3-6 per engine
-   Chevrolet Sprint (1992-1987) – 3-6 per engine
-   Chrysler Conquest (1988-1987) – 3-6 per engine
-   Dodge 2000 GTX (1990-1989) – 3-6 per engine
-   Dodge Challenger (1979-1978) – 3-6 per engine
-   Dodge Colt (1991-1979) – 3-6 per engine
-   Dodge Conquest (1986-1984) – 3-6 per engine
-   Dodge D50 (1982-1979) – 3-6 per engine
-   Dodge Mini Ram (1986-1984) – 3-6 per engine
-   Dodge Power Ram 50 (1986-1983) – 3-6 per engine
-   Dodge Raider (1989-1987) – 3-6 per engine
-   Dodge Ram 50 (1993-1983) – 3-6 per engine
-   Eagle 2000 GTX (1993-1991) – 3-6 per engine
-   Eagle Summit (1990-1989) – 3-6 per engine
-   Eagle Talon (1994-1990) – 3-6 per engine
-   Ford Aspire (1997-1994) – 3-6 per engine
-   Ford Festiva (1993-1988) – 3-6 per engine
-   Geo Metro (1997-1989) – 3-6 per engine
-   Geo Storm (1993-1990) – 3-6 per engine
-   Honda Accord (1985) – 3-6 per engine
-   Honda Civic (1987-1985) – 3-6 per engine
-   Honda Prelude (1987-1984) – 3-6 per engine

That is the 25 most common of 83 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.

-   DENSO: 3323, 3903, 4709, IW20, IW20TT, W20EPR-ZU11
-   Bosch: 4217, WR6DPX, WR7DPX
-   Harley Davidson/Screamin' Eagle: 32327-91, EVS13P
-   Harley-Davidson: 32327-91, EVS13P
-   Beck Arnley: 1765291

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 42.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 42.00 AUD | In stock |

## Images

- BPR6EIX-11 NGK iridium spark plug

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/bpr6eix-11-ngk-iridium-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03