---
product_id: 2297490
title: "NGK 6637 Iridium IX Spark Plug - BPR6EIX, 1 Pack"
brand: "ngk"
price: "S$27"
currency: SGD
in_stock: true
reviews_count: 13
category: "Ngk"
url: https://www.desertcart.sg/products/2297490-ngk-6637-iridium-ix-spark-plug-bpr6eix-1-pack
store_origin: SG
region: Singapore
---

# Iridium-tipped electrode Wider heat range Patented triple gasket seal NGK 6637 Iridium IX Spark Plug - BPR6EIX, 1 Pack

**Brand:** ngk
**Price:** S$27
**Availability:** ✅ In Stock

## Summary

> ⚡ Ignite your engine’s potential with NGK Iridium IX – where precision meets power!

## Quick Answers

- **What is this?** NGK 6637 Iridium IX Spark Plug - BPR6EIX, 1 Pack by ngk
- **How much does it cost?** S$27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/2297490-ngk-6637-iridium-ix-spark-plug-bpr6eix-1-pack)

## Best For

- ngk enthusiasts

## Why This Product

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

## Key Features

- • **Leak-Proof Power:** Patented triple gasket sealing technology guarantees zero combustion gas leakage—maximizing engine efficiency and reliability.
- • **Endurance Engineered:** Solid copper core combined with a nickel-tipped iridium electrode delivers extended spark plug life and consistent ignition.
- • **Plug & Play Precision:** Vehicle-specific fit ensures seamless installation and optimal compatibility for your ride—no guesswork, just power.
- • **Unmatched Heat Resilience:** Operates flawlessly across a broader heat spectrum than standard plugs, ensuring peak performance in any driving condition.
- • **Proven Real-World Performance:** Trusted by professionals and enthusiasts alike, with over 300 hours of flawless starts in demanding generator and automotive applications.

## Overview

The NGK 6637 Iridium IX Spark Plug is a vehicle-specific, high-performance ignition component designed with a patented triple gasket seal and an iridium-tipped electrode. Engineered for a wider heat range and longer lifespan, it ensures reliable starts and enhanced engine efficiency, making it a top choice for both automotive and generator use.

## Description

User Friendly style and design, tested for function in a real world environment, a truly quality assured /performance product that was designed with the user in mind.

Review: Great plug for portable generators - Running this plug in my Champion 3500 inverter generator that we power our camper with, and also in the Champion generator that powers my workshop. Over 300 hours on each generator with this plug... both start on the first pull every time. Take that Torch spark plug out, throw it as far away as you can, and replace with NGK... you'll be glad you did.
Review: Smooth sailing for an old engine. - I had some old AC Delco spark plugs that I didn't install that looked dirty and worn down. I replaced them with these New High Quality Spark Plugs. I think these are the best you can get for an old car. I haven't noticed any changes but I also didn't document any acceleration times for comparison. I also replaced the Rotor and Distributor Cap at the same time and new Spark Plug wires. But I'm hoping that somehow these replacements will improve my engine and gas mileage when compared to the previous historical data. The most significant thing that improved my car engine was using Sea Foam to flush out carbon deposits through the vacuum lines. Then doing an oil change using a Royal Purple Oil Filter and Royal Purple 5W-30 Oil. I'd try AmSoil but the inconvenience of ordering through them and the high price vs buying Royal Purple through desertcart was the deciding factor. I'll probably try AmSoil in the future but Royal Purple was easier and more abundant and hardly out of stock. Texas Tea is a good alternative but they seem to be out of stock often in comparison but probably on the level of AmSoil quality. After all these modifications the Engine was not as loud and seemed to run smoother. The Spark Plugs, Spark Plug Wires, Distributor Cap, and Rotor didn't seem to have much effect. Had I done these first before the Oil change procedure I might have noticed something. Anyhow, if you do everything I stated above, you'll probably pass your smog emissions. I had the worst emissions and was labeled a GROSS POLLUTER. Because of all these changes everything passed to near cleanest levels although only the HydroCarbons were just matching the maximum so I got lucky. I had to replace a worn down PCV hose that had a small crack near the mouth. The smog technician was pretty anal about it being replaced with a new one. I had repaired it myself with gorilla tape and a cable tie and he classified my result as TAMPERING and that's how I got those impressive emissions results that PASSED. But the fact the PCV hose was TAMPERED (REPAIRED in my book), I had to shell out money for a new PCV hose and another smog test. But it was well worth it to know through all my efforts had made a dramatic difference and paid off immensely. The smog technician was shocked at how drastic the improvement was and wanted to know what I did. I didn't tell him everything I revealed here since he didn't pass me so you guys will benefit from my experience and pass the 2nd time. Sometimes people don't have to be a stickler about everything and I would have spilled the beans to him. :)

## Features

- Fit type: Vehicle Specific
- Designed to operate over a much wider heat range than ordinary plugs
- Patented triple gasket sealing process eliminates the possibility of combustion gas leakage
- Solid copper core and nickel tipped electrode provide a longer plus life

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000UK1Y00 |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #232,517 in Automotive ( See Top 100 in Automotive ) #1,456 in Automotive Replacement Spark Plugs |
| Brand | NGK |
| Core Material | Iridium |
| Customer Reviews | 4.8 4.8 out of 5 stars (237) |
| Date First Available | December 2, 2005 |
| Global Trade Identification Number | 00087295166376 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.76 ounces |
| Item model number | 6637 |
| Manufacturer | NGK |
| Manufacturer Part Number | BPR6EIX |
| Model | NGK Iridium IX 6637 Spark Plug |
| OEM Part Number | Honda 98079-56844, Mazda 0370 18 110, Peugeot 5962.22, Subaru 49001 0013, Yamaha 94701 00284 |
| Position | Rear |
| Product Dimensions | 0.39 x 1.3 x 1.3 inches |
| Thread Size | 14mm |
| Top Material Type | Ceramic |
| UPC | 826732665276 087295166376 |
| Vehicle Service Type | Car |

## Product Details

- **Brand:** NGK
- **Core Material:** Iridium
- **Thread Size:** 14mm
- **Top Material Type:** Ceramic
- **Vehicle Service Type:** Car

## Images

![NGK 6637 Iridium IX Spark Plug - BPR6EIX, 1 Pack - Image 1](https://m.media-amazon.com/images/I/61Qs2owcf+L.jpg)
![NGK 6637 Iridium IX Spark Plug - BPR6EIX, 1 Pack - Image 2](https://m.media-amazon.com/images/I/81k88MpIu7L.jpg)
![NGK 6637 Iridium IX Spark Plug - BPR6EIX, 1 Pack - Image 3](https://m.media-amazon.com/images/I/71cf7nNNuBL.jpg)
![NGK 6637 Iridium IX Spark Plug - BPR6EIX, 1 Pack - Image 4](https://m.media-amazon.com/images/I/61QsRXGA+gL.jpg)

## Questions & Answers

**Q: Is it price for 1 Spark Plug or 4 ?**
A: 1 spark plug

**Q: How long "should" these last?**
A: Well, in a Car no less than 100,000 miles. Used in a marine engine V8 no less than 200 hours.

**Q: does this plug fit the oto guzzi breva 850 2008 model?**
A: Please see https://www.mpartz.com/ngk-zuendkerze-bpr6eix-iridium-2008-moto-guzzi-breva-850-ymm-51-7192

**Q: good night, which would serve me for a 92 eclipse 4g63 engine?**
A: I can't say other plugs are not good enough, however after several months and many thousand miles how the NGK BPR6EIX Iridium IX Spark Plugs perform.  Zero hesitation, burn clean, no misses and whether it is only the plugs or a combination of new wires and plugs, I am very pleased and will stick to these plugs for my turbo 2 L engine....  I also feel price evens out as they will last as long as 2 sets if others..

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great plug for portable generators
*by B***D on July 12, 2025*

Running this plug in my Champion 3500 inverter generator that we power our camper with, and also in the Champion generator that powers my workshop. Over 300 hours on each generator with this plug... both start on the first pull every time. Take that Torch spark plug out, throw it as far away as you can, and replace with NGK... you'll be glad you did.

### ⭐⭐⭐⭐⭐ Smooth sailing for an old engine.
*by V***R on August 29, 2013*

I had some old AC Delco spark plugs that I didn't install that looked dirty and worn down. I replaced them with these New High Quality Spark Plugs. I think these are the best you can get for an old car. I haven't noticed any changes but I also didn't document any acceleration times for comparison. I also replaced the Rotor and Distributor Cap at the same time and new Spark Plug wires. But I'm hoping that somehow these replacements will improve my engine and gas mileage when compared to the previous historical data. The most significant thing that improved my car engine was using Sea Foam to flush out carbon deposits through the vacuum lines. Then doing an oil change using a Royal Purple Oil Filter and Royal Purple 5W-30 Oil. I'd try AmSoil but the inconvenience of ordering through them and the high price vs buying Royal Purple through Amazon was the deciding factor. I'll probably try AmSoil in the future but Royal Purple was easier and more abundant and hardly out of stock. Texas Tea is a good alternative but they seem to be out of stock often in comparison but probably on the level of AmSoil quality. After all these modifications the Engine was not as loud and seemed to run smoother. The Spark Plugs, Spark Plug Wires, Distributor Cap, and Rotor didn't seem to have much effect. Had I done these first before the Oil change procedure I might have noticed something. Anyhow, if you do everything I stated above, you'll probably pass your smog emissions. I had the worst emissions and was labeled a GROSS POLLUTER. Because of all these changes everything passed to near cleanest levels although only the HydroCarbons were just matching the maximum so I got lucky. I had to replace a worn down PCV hose that had a small crack near the mouth. The smog technician was pretty anal about it being replaced with a new one. I had repaired it myself with gorilla tape and a cable tie and he classified my result as TAMPERING and that's how I got those impressive emissions results that PASSED. But the fact the PCV hose was TAMPERED (REPAIRED in my book), I had to shell out money for a new PCV hose and another smog test. But it was well worth it to know through all my efforts had made a dramatic difference and paid off immensely. The smog technician was shocked at how drastic the improvement was and wanted to know what I did. I didn't tell him everything I revealed here since he didn't pass me so you guys will benefit from my experience and pass the 2nd time. Sometimes people don't have to be a stickler about everything and I would have spilled the beans to him. :)

### ⭐⭐⭐⭐⭐ A must have for Duramax Generators
*by C***E on July 27, 2025*

Worked perfect on my Duramax XP13000HX generator. It's a must if you plan on running your generator on propane!

## Frequently Bought Together

- NGK 6637 Iridium IX Spark Plug - BPR6EIX, 1 Pack
- BPR6ES NGK Spark Plug for Honda Engines & Other Small Engines (One Spark Plug)
- CTA Tools 3235 Spark Plug Gapper

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-03*