# ITR5H13 NGK Iridium Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Iridium Spark Plug – Part Number: ITR5H13**

NGK iridium spark plugs feature an iridium alloy on the centre electrode, welded on with a laser – one of the world's hardest metals, with a melting point of 2450°C, giving very high resistance to spark erosion and, on average, double the service life of a standard nickel spark plug.

## ⚙️ Key Features

-   Fine iridium-tipped centre electrode and platinum-tipped ground electrode for a slow wear rate, stable idle, improved fuel efficiency and lower emissions
-   Longer service life
-   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
-   Triple seals prevent leakage
-   Copper core aids in heat removal

## 📏 Specifications

-   NGK stock number: 97287
-   Thread: 14 mm
-   Reach: .708"
-   Hex: 16 mm (5/8 in)
-   Seat: Tapered
-   Terminal: Solid
-   Type: Projected, Wide Gap

## 🚘 Application

Listed in NGK's application charts for automotive vehicles.

-   Aston Martin DB7 (2004) – 4-12 per engine
-   Buick Century (1993-1986) – 4-12 per engine
-   Buick Electra (1987-1986) – 4-12 per engine
-   Buick LeSabre (1988-1986) – 4-12 per engine
-   Buick Lucerne (2011-2006) – 4-12 per engine
-   Buick Riviera (1987-1986) – 4-12 per engine
-   Buick Roadmaster (1996-1994) – 4-12 per engine
-   Buick Skylark (1993-1986) – 4-12 per engine
-   Buick Skylark (1998-1995) – 4-12 per engine
-   Buick Somerset (1987-1986) – 4-12 per engine
-   Buick Somerset Regal (1985) – 4-12 per engine
-   Cadillac Allante (1993-1987) – 4-12 per engine
-   Cadillac Commercial Chassis (1990-1985) – 4-12 per engine
-   Cadillac DeVille (1990-1982) – 4-12 per engine
-   Cadillac DeVille (2005-1994) – 4-12 per engine
-   Cadillac DTS (2011-2006) – 4-12 per engine
-   Cadillac Eldorado (1990-1982) – 4-12 per engine
-   Cadillac Eldorado (2002-1993) – 4-12 per engine
-   Cadillac Fleetwood (1990-1982) – 4-12 per engine
-   Cadillac Fleetwood (1996-1994) – 4-12 per engine
-   Cadillac Seville (1990-1982) – 4-12 per engine
-   Cadillac Seville (2004-1993) – 4-12 per engine
-   Cadillac SRX (2009-2007) – 4-12 per engine
-   Cadillac STS (2010-2007) – 4-12 per engine
-   Cadillac XLR (2009-2007) – 4-12 per engine

That is the 25 most common of 177 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.

-   Bosch: 4504, 7420, 9605, 9606, 9608, HGR9DQI, HR6KII33X, HR7DII33V and 2 more
-   Motorcraft: AGSF22FM1, AGSF22WM, AGSF32Y-PC, AGSF32YR, SP405, SP448, SP479, SP541 and 2 more
-   DENSO: 4511, 4713, 5087, IT16TT, PT16TT, ZT20EPR11
-   Champion: 7304, 7304-2, RS9PYP4
-   ACDelco: 41-810

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 55.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 55.00 AUD | In stock |

## Images

- ITR5H13 NGK iridium spark plug

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/itr5h13-ngk-iridium-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03