---
product_id: 69009959
title: "Denso (3421) SK20HR11 Iridium Long Life Spark Plug Single Plug"
brand: "denso"
price: "6577 kr"
currency: ISK
in_stock: true
url: https://www.desertcart.is/products/69009959-denso-3421-sk20hr11-iridium-long-life-spark-plug-single-plug
store_origin: IS
region: Iceland
---

# extra long life durability 0.7mm fine wire iridium electrode platinum tipped ground electrode Denso (3421) SK20HR11 Iridium Long Life Spark Plug Single Plug

**Brand:** denso
**Price:** 6577 kr
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your drive with precision and longevity!

## Quick Answers

- **What is this?** Denso (3421) SK20HR11 Iridium Long Life Spark Plug Single Plug by denso
- **How much does it cost?** 6577 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/69009959-denso-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

- • **OEM Trusted Fit:** Compatible with Toyota, Lexus, Daihatsu models for seamless installation
- • **Endurance Engineered:** Extra long life design keeps your engine firing longer
- • **Lightweight & Durable:** Only 0.28g for minimal impact on engine dynamics
- • **Precision Ignition Power:** 0.7mm iridium center electrode for superior spark efficiency
- • **Platinum Grounded Reliability:** Platinum tipped ground electrode ensures consistent performance

## Overview

The Denso SK20HR11 Iridium Spark Plug features a 0.7mm fine wire iridium center electrode and platinum tipped ground electrode, delivering enhanced ignition efficiency and extended lifespan. Designed as a direct fit for select Toyota, Lexus, and Daihatsu vehicles, this lightweight 0.28g plug ensures reliable, long-lasting engine performance.

## Description

Denso (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 |
|---------------|-------|
| Manufacturer | Denso |
| Brand | Denso |
| Model | Spark Plug |
| Item model number | SK20HR11 |
| Manufacturer part number | 3421 |
| OEM Part Number | DAIHATSU 90048-51185-000, DAIHATSU 90919-01191-000, LEXUS 90919-01191, TOYOTA 90048-51185, TOYOTA 90919-01191 |
| Position | Left |
| Item Weight | 0.28 g |

## Product Details

- **Brand:** Denso
- **Core material:** Iridium
- **Thread size:** M14
- **Top material type:** platinum
- **Vehicle service type:** Vehicle specific

## Images

![Denso (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
- LEXIVON 5/8" Swivel Magnetic Spark Plug Socket, 3/8" Drive x 10" Total Length | Enhanced Magnetic Design with Thin Wall Socket, Cr-v Steel (LX-122)
- DENSO -SK20HR11- IRIDIUM PLATINUM power pack Spark Plugs - # 3421-4 PCS * NEW *

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**Shop now:** [https://www.desertcart.is/products/69009959-denso-3421-sk20hr11-iridium-long-life-spark-plug-single-plug](https://www.desertcart.is/products/69009959-denso-3421-sk20hr11-iridium-long-life-spark-plug-single-plug)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-04*