---
product_id: 200895134
title: "Motorcraft OEM SP594 Iridium Spark Plugs (6 pack) CYFS12YRT3"
brand: "ford"
price: "R3478"
currency: ZAR
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.za/products/200895134-motorcraft-oem-sp594-iridium-spark-plugs-6-pack-cyfs12yrt3
store_origin: ZA
region: South Africa
---

# Enhanced throttle & idle response Vehicle-specific OEM fit Iridium core for max durability Motorcraft OEM SP594 Iridium Spark Plugs (6 pack) CYFS12YRT3

**Brand:** ford
**Price:** R3478
**Availability:** ✅ In Stock

## Summary

> 🔥 Ignite your drive with OEM precision and lasting power!

## Quick Answers

- **What is this?** Motorcraft OEM SP594 Iridium Spark Plugs (6 pack) CYFS12YRT3 by ford
- **How much does it cost?** R3478 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/200895134-motorcraft-oem-sp594-iridium-spark-plugs-6-pack-cyfs12yrt3)

## Best For

- ford enthusiasts

## Why This Product

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

## Key Features

- • **Precision OEM Fit:** Engineered specifically for Ford vehicles to guarantee seamless installation and peak performance.
- • **Iridium Power Core:** Premium iridium material ensures superior durability and longer lifespan compared to standard plugs.
- • **6-Pack Value Bundle:** Complete set of six spark plugs, perfect for full engine replacement and maintenance convenience.
- • **Smooth Ride Guaranteed:** Noticeably improves idle stability and throttle response, eliminating misfires and stalling.
- • **Trusted by Professionals:** Highly rated with 4.6 stars from 319 reviews, proven to save your engine and sanity on the road.

## Overview

Motorcraft OEM SP594 Iridium Spark Plugs (6 pack) deliver genuine Ford-engineered quality with iridium-tipped electrodes for enhanced durability and performance. Designed for a perfect fit in Ford vehicles, these spark plugs improve throttle response and idle smoothness while preventing misfires. Trusted by thousands of users, this 6-pack offers a reliable, long-lasting solution to keep your engine running flawlessly.

## Description

SP594 CYFS12YRT3 is the most current version plug that replaces the SP578 CYFS12YPT

Review: Perfect fit - Perfect fit and made a huge difference. Smoothed out the idle and throttle response
Review: Saved my truck and my sanity! - Works perfectly for my 2.7 ecoboost (2018 F-150). It took my roughly 6 months pregnant self about three hours to install, start to finish. After the grave mistake of allowing a Tire Discounters to do an oil change on my truck while I got new tires, I was having lots of issues with misfiring and my truck randomly stalling, usually coming off the interstate. That’s really not fun when you have your family in the truck with you and you’re hours away from home, heading out west to Utah and California. Oh, and you’re pulling a horse trailer. Anyways, once we arrived in Utah, we had the truck looked at. The oil had been grossly overfilled (how in the world do you manage that???) so an oil change was done and things got better… mostly. But the misfires were still an issue. We stopped again because we could hardly get above 35mph without the truck shuddering and freaking out. They narrowed it down to bad spark plugs. They replaced them and sent us on our way. Now the issue was much better. However, after less than 8,000 miles, we started having misfires again. My truck had been misfiring for quite a while, and while I believed it was the spark plugs, the next shop I took it to said it likely wasn’t. Not wanting to gamble $500 off of my best guess, I just bought these and the necessary tools to do the installation myself. I bought a spark plug… thingy… (I forgot the word, sorry, baby brain) form Menards, but I found that, while it was great for taking the spark plugs OUT, it was not good at putting the new ones IN, as it wouldn’t let them go without leaving the aforementioned thingy in there. Thankfully, I had a Quinn brand set of thingies, and the right size was in there. That one worked much better for putting the spark plugs in. Once I had that issue figured out (that was the bulk of what took so long - trying to get the spark plug, and only the spark plug, in) the installation went very smoothly and quickly. I then drove my truck straight through to Oklahoma from Kentucky with a horse trailer, and then straight back to Kentucky the following day. No more misfires! I have also driven, again with a horse trailer, straight through from Kentucky to New York without a single incidence of a misfire. I think I’ve done about 10,000 miles with these, and I’ve not had a single issue! I have included a photo of these side-by-side with the spark plugs I removed. So glad I listened to the forum conversations I read and bought OEM! My truck seems much happier, and they have already outlasted the non OEM spark plugs that were installed before.

## Features

- Insist on Genuine OEM Parts for the Best Performance of your Vehicle
- Offering the Quality, Reliability and Durability You'd Expect from OEM Parts
- Research Applications Prior to Purchase To Make Sure This OEM Part Fits Your Vehicle, Including Engine, Drivetrain and Quantity Needed.
- OverstockDirect Offers Unbeatable Service
- This Listing is for 6 Spark Plugs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B084T7SFG3 |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #47,621 in Automotive ( See Top 100 in Automotive ) #295 in Automotive Replacement Spark Plugs |
| Brand | Ford |
| Brand Name | Ford |
| Compatible with Vehicle Type | Ford |
| Core Material | Iridium |
| Customer Reviews | 4.6 out of 5 stars 319 Reviews |
| Manufacturer | Motorcraft |
| Manufacturer Part Number | SP594 CYFS12YRT3 |
| Model Number | SP578 CYFS12YPT |
| Number of Items | 6 |
| OEM Equivalent Part Number | SP578 CYFS12YPT |
| Thread Size | M14x1.25 |
| Top Material Type | Iridium |
| Unit Count | 6 Count |
| Vehicle Service Type | Ford |

## Product Details

- **Brand:** Ford
- **Core Material:** Iridium
- **Thread Size:** M14x1.25
- **Top Material Type:** Iridium
- **Vehicle Service Type:** Ford

## Images

![Motorcraft OEM SP594 Iridium Spark Plugs (6 pack) CYFS12YRT3 - Image 1](https://m.media-amazon.com/images/I/61EsmQGc5aL.jpg)
![Motorcraft OEM SP594 Iridium Spark Plugs (6 pack) CYFS12YRT3 - Image 2](https://m.media-amazon.com/images/I/61FjyKhGJPL.jpg)
![Motorcraft OEM SP594 Iridium Spark Plugs (6 pack) CYFS12YRT3 - Image 3](https://m.media-amazon.com/images/I/51kifnDOroL.jpg)
![Motorcraft OEM SP594 Iridium Spark Plugs (6 pack) CYFS12YRT3 - Image 4](https://m.media-amazon.com/images/I/51zFE1IyBQL.jpg)
![Motorcraft OEM SP594 Iridium Spark Plugs (6 pack) CYFS12YRT3 - Image 5](https://m.media-amazon.com/images/I/613-WsS8XwL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect fit
*by J***D on July 29, 2026*

Perfect fit and made a huge difference. Smoothed out the idle and throttle response

### ⭐⭐⭐⭐⭐ Saved my truck and my sanity!
*by I***M on July 9, 2025*

Works perfectly for my 2.7 ecoboost (2018 F-150). It took my roughly 6 months pregnant self about three hours to install, start to finish. After the grave mistake of allowing a Tire Discounters to do an oil change on my truck while I got new tires, I was having lots of issues with misfiring and my truck randomly stalling, usually coming off the interstate. That’s really not fun when you have your family in the truck with you and you’re hours away from home, heading out west to Utah and California. Oh, and you’re pulling a horse trailer. Anyways, once we arrived in Utah, we had the truck looked at. The oil had been grossly overfilled (how in the world do you manage that???) so an oil change was done and things got better… mostly. But the misfires were still an issue. We stopped again because we could hardly get above 35mph without the truck shuddering and freaking out. They narrowed it down to bad spark plugs. They replaced them and sent us on our way. Now the issue was much better. However, after less than 8,000 miles, we started having misfires again. My truck had been misfiring for quite a while, and while I believed it was the spark plugs, the next shop I took it to said it likely wasn’t. Not wanting to gamble $500 off of my best guess, I just bought these and the necessary tools to do the installation myself. I bought a spark plug… thingy… (I forgot the word, sorry, baby brain) form Menards, but I found that, while it was great for taking the spark plugs OUT, it was not good at putting the new ones IN, as it wouldn’t let them go without leaving the aforementioned thingy in there. Thankfully, I had a Quinn brand set of thingies, and the right size was in there. That one worked much better for putting the spark plugs in. Once I had that issue figured out (that was the bulk of what took so long - trying to get the spark plug, and only the spark plug, in) the installation went very smoothly and quickly. I then drove my truck straight through to Oklahoma from Kentucky with a horse trailer, and then straight back to Kentucky the following day. No more misfires! I have also driven, again with a horse trailer, straight through from Kentucky to New York without a single incidence of a misfire. I think I’ve done about 10,000 miles with these, and I’ve not had a single issue! I have included a photo of these side-by-side with the spark plugs I removed. So glad I listened to the forum conversations I read and bought OEM! My truck seems much happier, and they have already outlasted the non OEM spark plugs that were installed before.

### ⭐⭐⭐⭐⭐ Great plugs at a great price
*by L***S on September 3, 2026*

The plugs arrived right on schedule. I checked the gaps on them as I was installing them. Each one was perfect and each one measured the suggested gap. Installation went smoothly and between the new plugs and cleaning the MAF and MAP sensors, the truck idles smoothly and accelerates without hesitation. The price was better than the parts stores in town, so another win.

## Frequently Bought Together

- OverstockDirect Genuine OEM SP594 Iridium Spark Plugs (6 pack) CYFS12YRT3
- Permatex 22058 Dielectric Tune-Up Grease, 3oz. - High Performance Dielectric Grease Used To Protect Terminals, Spark Plugs, Wiring And Other Electrical Connections Against Salt, Dirt, And Corrosion
- Motorcraft Boot

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**Shop now:** [https://www.desertcart.co.za/products/200895134-motorcraft-oem-sp594-iridium-spark-plugs-6-pack-cyfs12yrt3](https://www.desertcart.co.za/products/200895134-motorcraft-oem-sp594-iridium-spark-plugs-6-pack-cyfs12yrt3)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-09-25*