--- product_id: 77065977 title: "NGK (7397-4PK TR5IX Iridium IX Spark Plug, (Box of 4)" brand: "ngk" price: "€ 63.33" currency: EUR in_stock: true reviews_count: 5 category: "Ngk" url: https://www.desertcart.pt/products/77065977-ngk-7397-4pk-tr5ix-iridium-ix-spark-plug-box-4 store_origin: PT region: Portugal --- # 0.6mm Iridium tip for extreme ignitability High melting point Iridium alloy for heat durability Triple gasket seal prevents combustion gas leaks NGK (7397-4PK TR5IX Iridium IX Spark Plug, (Box of 4) **Brand:** ngk **Price:** € 63.33 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your drive with NGK Iridium IX – where precision meets power! ## Quick Answers - **What is this?** NGK (7397-4PK TR5IX Iridium IX Spark Plug, (Box of 4) by ngk - **How much does it cost?** € 63.33 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/77065977-ngk-7397-4pk-tr5ix-iridium-ix-spark-plug-box-4) ## 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 - • **Fouling? Not Here.:** Longer insulator nose and corrugated ribs prevent fouling and flashover, keeping your engine running clean. - • **Endurance Under Fire:** Iridium alloy’s ultra-high melting point ensures unmatched durability against heat and electrical wear. - • **Flawless Combustion Seal:** Triple gasket seal eliminates combustion gas leakage, maximizing engine efficiency and longevity. - • **Precision Ignition Power:** Laser-welded 0.6mm Iridium tip delivers a consistently stable spark for peak engine performance. - • **Corrosion-Proof Confidence:** Trivalent metal plating offers superior anti-corrosion and anti-seizing properties for hassle-free maintenance. ## Overview 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. ## Description Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling. The 0.6mm laser welded fine Iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical Quenching Effect. Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage. Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high-performance engines. Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties. Review: 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. Review: 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. ## Features - Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling - The 0.6mm laser welded fine Iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical Quenching Effect - Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage - Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high-performance engines - Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00L3XGGDS | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | 384,275 in Automotive ( See Top 100 in Automotive ) 1,533 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 773 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 | ## Product Details - **Brand:** NGK - **Core material:** Iridium - **Thread size:** M14x1.25 - **Top material type:** Metal - **Vehicle service type:** Car ## Images ![NGK (7397-4PK TR5IX Iridium IX Spark Plug, (Box of 4) - Image 1](https://m.media-amazon.com/images/I/71iSVSsw1HL.jpg) ![NGK (7397-4PK TR5IX Iridium IX Spark Plug, (Box of 4) - Image 2](https://m.media-amazon.com/images/I/41PhgdPZSBL.jpg) ## Questions & Answers **Q: Will these fit my 95 ford thunderbird 4.6l sohc v8 ?** A: No this listing is compatible for 1983-1988 Ford Thunderbird. Thank you. **Q: Are the terminal nuts removable?** A: On the spark plug itself? No. Unless you break them off but i wouldn't suggest that lol **Q: Will these fit 2011 camry le** A: The best way to determine fit for these or any other plug is to go to the NGK website and verify fit on their fitment chart **Q: what spark plug i use in my bike ducati diavel carbon 2013 and my ducati multiestrada 2014? thanks** A: The best bet is to check the ngk website to verify fitment especially on a bike since the wrong plug may reach too far into the combustion chamber and cause damage ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works as expected 2005 Chevy Silverado 5.3L *by E***S on 11 March 2017* 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. ### ⭐⭐⭐⭐⭐ Les bougies iridium pour 100 000KM *by L***. on 8 May 2018* Un super produit NGK qualité japon... Les bougies iridium sont les seules modèles conçues pour un kilométrage élevé, avec une consommation réduite. ### ⭐⭐⭐⭐⭐ Less Expensive Than Parts Store *by S***H on 21 July 2023* Good NGK product, great for Chevy trucks. These would cost almost double what I paid had I bought them at a parts store. ## Frequently Bought Together - NGK 7397 TR5IX Iridium IX Spark Plug, Pack of 4 - JDMSPEED High Performance Spark Plug Ignition Wire for 2000-2009 Chevy GMC V8 - NGK 7397 Spark Plug --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/77065977-ngk-7397-4pk-tr5ix-iridium-ix-spark-plug-box-4](https://www.desertcart.pt/products/77065977-ngk-7397-4pk-tr5ix-iridium-ix-spark-plug-box-4) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-01*