# R5671A-10 NGK Standard Racing Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Standard Racing Spark Plug – Part Number: R5671A-10**

NGK racing spark plugs are built for sustained high-RPM, high-temperature competition use, with precious-metal electrodes and cold heat ranges chosen for heavily loaded engines. Racing plugs are application-specific – heat range selection is critical, so confirm the specification for your engine before fitting.

## ⚙️ Key Features

-   Competition-grade construction for sustained high RPM and cylinder temperatures
-   Cold heat range for heavily loaded engines
-   Pure alumina silicate ceramic insulator, providing superior strength and better heat transfer
-   Triple seals prevent leakage

## 📏 Specifications

-   NGK stock number: 5820
-   Thread: Racing Spark Plugs
-   Reach: 19 mm (3/4 in)
-   Hex: 16 mm (5/8 in)
-   Seat: Gasket
-   Terminal: Solid
-   Type: V-Power Non-Resistor

## 🚘 Application

NGK lists the principal application for this plug as: Racing Use.

Ask us to confirm the exact fit for your equipment.

## 🔄 Supersession & Cross Reference

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

-   Champion: 294, 686, 693, C55C, C55CX, C57, C57C, C57CX
-   Autolite: 2592, 2612, 3932, AR3931, AR3932, AR3932X
-   Bosch: F2CS, W2C, W2C0, W2CC
-   ACDelco: S40XL
-   Accel: 761

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 18.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 18.00 AUD | In stock |

## Images

- R5671A-10 NGK racing spark plug
- R5671A-10 NGK racing spark plug firing end

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/r5671a-10-ngk-standard-racing-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03