---
product_id: 7467342
title: "(3421) SK20HR11 Iridium Long Life Spark Plug, Single Plug"
brand: "denso"
price: "8.84 OMR"
currency: OMR
in_stock: true
url: https://www.desertcart.com.om/products/7467342-3421-sk20hr11-iridium-long-life-spark-plug-single-plug
store_origin: OM
region: Oman
---

# extra long life durability 0.7mm ultra-fine iridium tip platinum-tipped ground electrode (3421) SK20HR11 Iridium Long Life Spark Plug, Single Plug

**Brand:** denso
**Price:** 8.84 OMR
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your drive with precision and power!

## Quick Answers

- **What is this?** (3421) SK20HR11 Iridium Long Life Spark Plug, Single Plug by denso
- **How much does it cost?** 8.84 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/7467342-3421-sk20hr11-iridium-long-life-spark-plug-single-plug)

## Best For

- denso enthusiasts

## Why This Product

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

## Key Features

- • **Premium Materials:** Iridium core combined with platinum-tipped ground electrode for superior wear resistance.
- • **Unmatched Longevity:** Extra long life design means fewer replacements and more miles between maintenance.
- • **Vehicle-Specific Fit:** Engineered to fit select car and truck models perfectly, ensuring optimal performance.
- • **Lightweight & Durable:** Ultra-light 0.01 oz plug built to withstand high temperatures and harsh conditions.
- • **Precision Ignition Performance:** 0.7mm iridium center electrode ensures faster, more reliable sparks for peak engine efficiency.

## Overview

The Denso SK20HR11 Iridium Long Life Spark Plug features a 0.7mm fine wire iridium-tipped center electrode and a platinum-tipped ground electrode, delivering superior ignition performance and extended durability. Designed for specific car and truck models, this ultra-lightweight spark plug ensures reliable engine starts and longer service intervals.

## Description

(3421) SK20HR11 Iridium Long Life Spark Plug, Single Plug

## Features

- Single Plug
- Denso # 3421
- Extra Long Life Iridium Plug
- 0.7mm Fine Wire Iridium-Tipped Center Electrode
- Platinum Tipped Ground Electrode

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Denso |
| Core Material | Iridium |
| Thread Size | 1.25mm |
| Top Material Type | Platinum |
| Vehicle Service Type | Car, Truck |
| Global Trade Identification Number | 00042511034211 |
| Automotive Fit Type | Vehicle Specific Fit |
| UPC | 042511034211 |
| OEM Part Number | DAIHATSU 90048-51185-000, DAIHATSU 90919-01191-000, LEXUS 90919-01191, TOYOTA 90048-51185, TOYOTA 90919-01191 |
| Manufacturer | Denso |
| Model | Spark Plug |
| Item Weight | 0.01 ounces |
| Item model number | SK20HR11 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 3421 |
| Position | Left |

## Product Details

- **Brand:** Denso
- **Core Material:** Iridium
- **Thread Size:** 1.25mm
- **Top Material Type:** Platinum
- **Vehicle Service Type:** Car, Truck

## Images

![(3421) SK20HR11 Iridium Long Life Spark Plug, Single Plug - Image 1](https://m.media-amazon.com/images/I/41mLLmfWMlL.jpg)

## Questions & Answers

**Q: is this spark plug compatible fit for my v6 sr5 4.o tacoma**
A: Yes  the exact fit for tacoma v6 4.0 great spark plugs I use them every time.

**Q: My owners manual for 2014 toyoto land cruiser says these are the plugs for the 5.7 motor, same as the tundra. amazon has it wrong saying does not fit?**
A: I have a 2011 Tacoma and I bought these Denso plugs and installed them.   I would say that these are great plugs and considered O.E.M. replacement for Toyotas.  That being said, I would caution you about trusting Amazon to sell you the correct plugs. Check your owner's manual and Toyota parts websites to be sure that you get the right ones.  Cross reference the numbers as they all have slightly different specs.  Changing plugs on a 4 cylinder was not easy but a V8 will be a challenge. Unfortunately, I have purchased auto parts from Amazon in the past and received the incorrect parts which I could not return.  Amazon is not an authorized Toyota reseller.  Also, be careful about non-Amazon vendors selling through Amazon.  Their policies may be different than expected. Good luck!

**Q: Does spark plug fits 08 honda civic 1.3L hybrid?**
A: I don't know. check your owners manual if you have one or check online. I have a Toyota.

**Q: What are these pre-gapped at? The sales page says .044" but some of the reviews say different. I know the spec gap for my Taco is .043"**
A: I just bought 8 of these from a Toyota dealer.  They were all gapped the same.  Unfortunately, I also found out that NONE of the three gap gauges I have right now are accurate.    I would say the plugs were accurately gapped at 044.  043 isn't going to hurt your Taco.

## Frequently Bought Together

- Denso (3421) SK20HR11 Iridium Long Life Spark Plug, Single Plug
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- DENSO -SK20HR11- IRIDIUM PLATINUM power pack Spark Plugs - # 3421-4 PCS * NEW *

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**Shop now:** [https://www.desertcart.com.om/products/7467342-3421-sk20hr11-iridium-long-life-spark-plug-single-plug](https://www.desertcart.com.om/products/7467342-3421-sk20hr11-iridium-long-life-spark-plug-single-plug)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-01-27*