---
product_id: 45842645
title: "Genuine Subaru Iridium Spark Plugs 22401AA670 / SILFR6A for WRX & STi Legacy Forester Outback Impreza OEM Set of 4"
brand: "subaru"
price: "A$161"
currency: AUD
in_stock: true
reviews_count: 5
category: "Subaru"
url: https://www.desertcart.com.au/products/45842645-genuine-subaru-iridium-spark-plugs-22401aa670-silfr6a-for-wrx-sti
store_origin: AU
region: Australia
---

# Iridium core for superior ignition Optimized for 2.5L turbo Subaru engines OEM fitment for perfect compatibility Genuine Subaru Iridium Spark Plugs 22401AA670 / SILFR6A for WRX & STi Legacy Forester Outback Impreza OEM Set of 4

**Brand:** subaru
**Price:** A$161
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your Subaru’s true potential with every start!

## Quick Answers

- **What is this?** Genuine Subaru Iridium Spark Plugs 22401AA670 / SILFR6A for WRX & STi Legacy Forester Outback Impreza OEM Set of 4 by subaru
- **How much does it cost?** A$161 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/45842645-genuine-subaru-iridium-spark-plugs-22401aa670-silfr6a-for-wrx-sti)

## Best For

- subaru enthusiasts

## Why This Product

- Trusted subaru brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durability That Lasts:** Resistor design reduces electrical noise and ensures consistent ignition over 30,000+ miles.
- • **Guaranteed OEM Compatibility:** Direct fit for Subaru WRX, STI, Forester, Legacy, Outback & more—no modifications needed.
- • **Precision Iridium Technology:** Experience unmatched spark efficiency and longevity with NGK laser-welded iridium tips.
- • **Trusted Genuine Subaru Parts:** Keep your ride authentic and reliable with factory-approved spark plugs favored by enthusiasts.
- • **Turbocharged Performance Ready:** Specifically engineered for 2.5L turbo engines to maximize power and throttle response.

## Overview

Genuine Subaru NGK SILFR6A iridium spark plugs deliver OEM precision and durability, engineered specifically for Subaru’s 2.5L turbocharged engines across WRX, STI, Forester, Legacy, Outback, and Tribeca models. Featuring laser-welded iridium tips for superior ignition performance and long-lasting reliability, these plugs ensure optimal power, fuel efficiency, and smooth throttle response—trusted by Subaru enthusiasts who demand authentic parts.

## Description

Fitment : Manufacturer: NGK Laser Iridium Resistor Part Number: NGK SILFR6A / 7913 SUBARU Part Number: 22401AA670 SUBARU APPLICATIONS: FORESTER 2004-2013 IMPREZA 2004-2014 LEGACY 2005-2013 OUTBACK 2005-2009 TRIBECA 2008-2009 WRX 2012-2016 WRX STI 2013-2019 2.5 Turbo Engines Only

Review: Lo original es lo mejor
Review: Works perfect - Buy only original subbie parts my friends

## Features

- Spark plugs for Subaru Impreza Subaru Tribeca Subaru Legacy Subaru Outback Subaru WRX
- Fitment : Manufacturer: NGK Laser Iridium Resistor Part Number: NGK SILFR6A / 7913 SUBARU Part Number: 22401AA670 SUBARU APPLICATIONS
- FORESTER 2004-2013 IMPREZA 2004-2014 LEGACY 2005-2013
- OUTBACK 2005-2009 TRIBECA 2008-2009 WRX 2012-2016 WRX STI 2013-2019 2.5 Turbo Engines Only

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00DGYNIN8 |
| Best Sellers Rank | #846,323 in Automotive ( See Top 100 in Automotive ) #4,544 in Automotive Replacement Spark Plugs |
| Brand | Subaru |
| Core Material | Iridium |
| Customer Reviews | 4.0 4.0 out of 5 stars (23) |
| Date First Available | June 18, 2013 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 9.1 ounces |
| Manufacturer | Genuine Parts |
| Manufacturer Part Number | 22401 AA 670 |
| OEM Part Number | 22401AA670 |
| Package Dimensions | 4.53 x 4.17 x 4.17 inches |
| Thread Size | 14mm |
| Top Material Type | Iridium |
| Vehicle Service Type | Forester, Impreza, Legacy, Outback, Tribeca, WRX |

## Product Details

- **Brand:** Subaru
- **Core Material:** Iridium
- **Thread Size:** 14mm
- **Top Material Type:** Iridium
- **Vehicle Service Type:** Forester, Impreza, Legacy, Outback, Tribeca, WRX

## Images

![Genuine Subaru Iridium Spark Plugs 22401AA670 / SILFR6A for WRX & STi Legacy Forester Outback Impreza OEM Set of 4 - Image 1](https://m.media-amazon.com/images/I/41ctKQ-dykL.jpg)

## Questions & Answers

**Q: Fit 2014 WRX turbo?**
A: Yes this fit 2014 wrx turbo best plugs to go with for Subaru

**Q: Will this fit a 2012 impreza wrx?**
A: Those spark plugs were a perfect fit to my outback 2008 at 2.5 base automatic not sure if they fit your car but there’s nothing like oem parts when you buy according to your year and car specifications.

**Q: Why do they come in bags and not an original box? The tips are not supposed to be damaged.**
A: They don’t get damaged in shipping I have not had any problems

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***. on October 3, 2025*

Lo original es lo mejor

### ⭐⭐⭐⭐⭐ Works perfect
*by P***H on December 31, 2024*

Buy only original subbie parts my friends

### ⭐⭐⭐⭐ Damaged
*by J***N on July 29, 2020*

Got the package and opened it and this happened

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.com.au/products/45842645-genuine-subaru-iridium-spark-plugs-22401aa670-silfr6a-for-wrx-sti](https://www.desertcart.com.au/products/45842645-genuine-subaru-iridium-spark-plugs-22401aa670-silfr6a-for-wrx-sti)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-03*