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Description
NGK SILZNAR8C7H Laser Iridium Spark Plug (93593) 1.0 EcoBoostNGK SILZNAR8C7H Laser Iridium Spark Plug This NGK Laser Iridium spark plug is built for modern turbocharged, direct injection petrol engines. It offers strong ignition under high cylinder pressure, stable idle, and reliable performance at sustained motorway speeds. The fine iridium centre electrode needs less voltage to spark, which helps cold starts and keeps misfires down. A platinum tipped ground electrode improves wear life, so performance stays
NGK SILZNAR8C7H Laser Iridium Spark Plug
This NGK Laser Iridium spark plug is built for modern turbocharged, direct-injection petrol engines. It offers strong ignition under high cylinder pressure, stable idle, and reliable performance at sustained motorway speeds. The fine iridium centre electrode needs less voltage to spark, which helps cold starts and keeps misfires down. A platinum-tipped ground electrode improves wear life, so performance stays consistent over more miles.
Use this plug as specified by the vehicle manufacturer or trusted tuning guidance. It suits many high-output petrol engines that call for an NGK heat range 8 plug and a resistor type. Always confirm fitment with the vehicle lookup or the Vehicle Fitment tab.
| Part Number | SILZNAR8C7H |
|---|---|
| NGK Stock Number | 93593 |
| GTIN | 87295935934 |
| Category | 686 – Spark Plug |
| Technology | Laser Iridium (iridium centre, platinum ground) |
| Heat Range | 8 (NGK scale – colder than standard for performance/DI turbo use) |
| Resistor | Yes (reduces electrical noise for ECU and sensors) |
| Electrode Design | Fine-wire centre with tapered ground |
| Gap | Factory set – do not adjust unless specified by OEM/tuner |
| Terminal | As supplied by NGK for OEM coil-on-plug applications |
| Recommended Service Interval | As per vehicle manufacturer or tuning guidance |
- Improved ignition stability under boost and at high RPM.
- Smoother idle and better cold starts.
- Long service life from iridium/platinum precious metals.
Note: Always verify compatibility for your exact engine code and model year. Install to the correct torque on a cold engine and follow OEM gap and replacement intervals.
The price displayed is for a single plug, please add the desired amount to your basket.
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 4
A true turtleneck that retains a snug high neck.
Color: White, Size: X-Large
I've found this brand to have gotten better over the years as far as offering the American market what it needs in terms of realistic sizing. I only wish they'd realize that there are a lot of us who are long in the back and arms where my only choice is to go a size up and sacrifice a slim fit for sleeves that are long enough plus a back that doesn't go up past my waist just because I reach up for something, that and I like to be warm. So these are such nice quality turtlenecks that it's hard to complain about but maybe the company will read this. The snug neck stays up is plus number one since that's why I'm buying a full neck. They come with very nice weaves in the fabric, good enough for casual or formal wear. Finally the warmth you seek is there but I've worn them in what most would think isn't the right temp for a turtleneck. Also they have them in white! Yes, a lot of others just don't for reasons I can't fathom, and the pic you're seeing is accurate, these will form to your shape without being ridiculously thin material. Several washes later and they are as fine a garment as when I first wore them. I've only found one other brand that compares to these but it's much more expensive, COOFANDY is affordable in these times of expensive everything. Warm but also a lightweight shirt, I've gotten them really dirty with actual dirt and it washes out so well you'd never know it. Don't let my taking off one star stop you, try one yourself and you'll be coming back for more.
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Reviewed in the United States on July 30, 2025
★★★★★ 5
Quality,warmth and fit
Color: Royal Blue, Size: Small
Really top quality. This is my 4th purchase of these Really great sweaters.
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Reviewed in the United States on February 12, 2026
★★★★★ 5
Nice Sweater
Color: 01-black, Size: Large
This is a very nice sweater. It’s reasonably thick and warm. Looks nice. I like it.
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Reviewed in the United States on January 18, 2026
★★★★★ 5
Nice turtle neck sweater
Color: Royal Blue, Size: Small
It was true to size a perfect fit and the color is beautiful. Nice sweater for the amount paid.
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Reviewed in the United States on January 11, 2026
★★★★★ 5
Very good
Color: 01-black, Size: Small
It looks so good on my bf, he really like it. The quality is so perfect.
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Reviewed in the United States on January 15, 2026