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⚡ Ignite your drive with NGK Iridium IX – where precision meets power!
The NGK TR5IX Iridium IX Spark Plug (4-pack) is engineered for performance enthusiasts seeking extreme ignitability and durability. Featuring a 0.6mm laser-welded Iridium tip, tapered ground electrode, and triple gasket seal, it ensures stable sparks, improved throttle response, and prevents fouling and combustion gas leaks. Its high melting point alloy and anti-corrosion plating make it ideal for high-performance engines, delivering reliable, long-lasting ignition.
| ASIN | B00L3XGGDS |
| Best Sellers Rank | 86,749 in Automotive ( See Top 100 in Automotive ) 401 in Car Spark Plugs |
| Brand | NGK |
| Customer Reviews | 4.7 4.7 out of 5 stars (773) |
| Date First Available | 15 Aug. 2010 |
| Item Weight | 68 g |
| Item model number | 7397-4PK |
| Manufacturer | NGK |
| Manufacturer part number | 8M0046007 |
| Model | 7397-4PK |
| OEM Part Number | TR5IX |
| Position | Front, Rear |
| Product Dimensions | 10.41 x 8.89 x 2.54 cm; 68.04 g |
A**R
Found the ones I needed on Amazon at a decent price. Brand is highly recommended. Don't know how much overall performance improvement I'm getting but it's good to know I have one of the best plugs available. They were installed in a 2010 Ford Escape with leaky valve cover gaskets. Replaced the gaskets and I should have peace of mind for many years. Free delivery definitely made a difference in buying from Amazon rather than from other on-line sellers.
E**S
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.
S**H
Good NGK product, great for Chevy trucks. These would cost almost double what I paid had I bought them at a parts store.
A**E
All 8 were at .035-.037. Adjusted to .04 and runs great with new wires and coils
G**A
Bought them for my 2005 Camry, works great, price was good and it shipped in time.
Trustpilot
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