# TLDR Review: NGK Iridium IX Spark Plugs LFR5AIX-11

*Published: 2024-05-30 | Updated: 2024-06-20 | Source: https://shopsavvy.com/reviews-tldr/ngk-iridium-ix-spark-plugs-lfr5aix-11*

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## Verdict

The 6 New NGK Iridium IX Spark Plugs LFR5AIX-11 #4469 are a high-quality, reliable choice for improving vehicle performance. They fit perfectly in specified models like the G35 and 2002 Pathfinder, are pre-gapped for easy installation, and offer better affordability than local stores. However, be cautious of potential discrepancies in product condition upon delivery.

**Top pro:** Fit perfectly for the G35 motor and the 2002 Pathfinder engine.
**Top con:** Four out of the six spark plugs received were used and not as expected.

## Product: NGK Iridium IX Spark Plugs LFR5AIX-11
**Brand:** NGK
[Compare prices and price history on ShopSavvy](https://shopsavvy.com/products/ngk-iridium-ix-spark-plugs-lfr5aix-11)

## Pros
- Fit perfectly for the G35 motor and the 2002 Pathfinder engine.
- Pre-gapped correctly, making installation easy and improving performance.
- Engine started right up and runs much more smoothly post-installation.
- Expected to last for another 100,000 miles.
- Great spark plugs with confirmed authenticity through NGK verification.
- Car performance improved significantly after installation.
- Reliable replacement for Infiniti OEM spark plugs.
- More affordable compared to local auto parts stores.
- Comparable quality to parts sourced from a physical store.
- Installation was straightforward and resolved issues effectively.

## Cons
- Four out of the six spark plugs received were used and not as expected.
- Significant disappointment due to wasted time addressing the issue.

## Pros vs Cons at a Glance

| Pros | Cons |
|------|------|
| Fit perfectly for the G35 motor and the 2002 Pathfinder engine. | Four out of the six spark plugs received were used and not as expected. |
| Pre-gapped correctly, making installation easy and improving performance. | Significant disappointment due to wasted time addressing the issue. |
| Engine started right up and runs much more smoothly post-installation. |  |
| Expected to last for another 100,000 miles. |  |
| Great spark plugs with confirmed authenticity through NGK verification. |  |
| Car performance improved significantly after installation. |  |
| Reliable replacement for Infiniti OEM spark plugs. |  |
| More affordable compared to local auto parts stores. |  |
| Comparable quality to parts sourced from a physical store. |  |
| Installation was straightforward and resolved issues effectively. |  |

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