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⚡ Ignite your drive with NGK Iridium IX – where precision meets power!
NGK Iridium IX Spark Plugs feature a laser-welded 0.6mm fine Iridium tip for extreme ignitability and durability. Designed for performance enthusiasts, they improve throttle response and resist fouling with a longer insulator nose and corrugated ribs. The triple gasket seal prevents combustion gas leaks, while the high melting point Iridium alloy withstands heat and electrical wear. Enhanced with trivalent metal plating, these plugs resist corrosion and seizing, making them ideal for high-performance engines.
| ASIN | B00L3XGGDS |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | 444,700 in Automotive ( See Top 100 in Automotive ) 1,737 in Car Spark Plugs |
| Brand | NGK |
| Brand Name | NGK |
| Compatible with Vehicle Type | Car |
| Core Material | Iridium |
| Core material | Iridium |
| Customer Reviews | 4.7 out of 5 stars 770 Reviews |
| Global Trade Identification Number | 00087295073971 |
| Item Weight | 0.15 Pounds |
| Manufacturer | NGK |
| Manufacturer Part Number | 8M0046007 |
| Model Number | 7397-4PK |
| Number of Items | 4 |
| OEM Equivalent Part Number | TR5IX |
| Thread Size | M14x1.25 |
| Thread size | M14x1.25 |
| Top Material Type | Metal |
| Top material type | Metal |
| UPC | 087295073971 |
| Unit Count | 4.0 count |
| Vehicle service type | Car |
E**S
Works as expected 2005 Chevy Silverado 5.3L
This is a review for : NGK (7397-4PK) TR5IX Iridium IX Spark Plug, (Box of 4) I installed these today to replace the original factory AC Delco platinum plugs that have 164K miles on them. This is for a 2005 Chevy Silverado 5.3L. The plugs fit and were easy enough to install. I did check the gap to be sure they were all 0.40. Not one was missing or broken. I applied the anti seize lubricant. I then hand tightened using this: GearWrench 80546 5/8-Inch x 6-Inch Swivel Spark Plug Socket Actually used it to remove the old plugs too. I used a torque wrench to 10 foot-pounds (range is 7-14.5 foot pounds for these). I used some Taylor wires which look nice the the jury is out due to fit and degree of difficulty to get those on. Time will tell if these will last. Since my factory plugs were still running fine with absolutely no carbon build up (no need to soak in PB Blaster as I had feared), it was really easy to get those off. The truck idled nicely then and about the same with these. The real test will be in two weeks when I drag my 6000 pound travel trailer out of storage and go camping. If anything changes for the worse, I'll update. If these continue to run fine, then I won't. NGK packages these in the individual boxes and all four into bigger box. But a nice touch is a small cardboard tube going over the threads to protect them from possible damage in shipping. Never seen that before. nice.
L**.
Les bougies iridium pour 100 000KM
Un super produit NGK qualité japon... Les bougies iridium sont les seules modèles conçues pour un kilométrage élevé, avec une consommation réduite.
R**I
Great NGK Iridium for the price. V8 Avalanche
Great Iridium Spark plugs for the Money, that can be ordered in an entire set of eight (8) as needed for 5.3L V8 trucks. No issues on install, and longevity of plugs and authenticity pending. Strongly encouraged to check the required gap specific for your application and gap each grounding electrode accordingly. Please don't assume gapping is preset, or that it's correct. Also brush on a little Anti-Seize compound to each spark plug thread, and (at least) a finger dap of Dielectric Grease on the tip of the spark plug electrode. Makes things a lot smoother in disassembly and servicing later.
R**N
Great product, fast and best price!!
I heard about NGK spark plugs fakes being sold on Amazon but these are the real thing.
A**E
Double check gap, otherwise good
All 8 were at .035-.037. Adjusted to .04 and runs great with new wires and coils
Trustpilot
2 weeks ago
3 weeks ago