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Ships within 48 hours · Estimated delivery Aug 28 - Sep 2
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For Your Every Summer RSVP, with Code: SUMMER15
Description
NGK Racing Spark Plug - 4901Extra cold plug for high horsepower applications. Sold as a SINGLE plug. Specs: Reach 26. 5mm Hex Size 5 8" Ground Electrode Quantity 1 Manufacturer Heat Range 8 Thread Diameter 14. 00mm Center Electrode Tip Material Iridium Ground Electrode Core Material Copper Core Ground Electrode Tip Design Taper Cut Trapezoid Insulator Height 50. 50mm Pre Gap Size 0. 028" Seat Type Flat Center Electrode Core Material Copper Core Ground Configuration Standard
Extra cold plug for high horsepower applications.
Sold as a SINGLE plug.
Specs:
| Reach | 26.5mm |
| Hex Size | 5/8" |
| Ground Electrode Quantity | 1 |
| Manufacturer Heat Range | 8 |
| Thread Diameter | 14.00mm |
| Center Electrode Tip Material | Iridium |
| Ground Electrode Core Material | Copper Core |
| Ground Electrode Tip Design | Taper Cut / Trapezoid |
| Insulator Height | 50.50mm |
| Pre-Gap Size | 0.028" |
| Seat Type | Flat |
| Center Electrode Core Material | Copper Core |
| Ground Configuration | Standard |
| Resistance | 5000 Ohms |
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
4.5 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Size perfect
Size: 4.5-7, Color: Electro Pink/Electro Tangerine/Electro Pink
Perfect fit
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Reviewed in the United States on April 13, 2026
★★★★★ 5
good, worth the value
Size: Medium, Color: (025) Castlerock / Castlerock / Anthracite
Well it was delivered quick, and all my socks are mostly under armour, as they have developed holes in the heels now, so here i am getting a new set. they fit great, comfortable as usual. some folks may have some sort of issues, while some dont and i cannot complain. worth buying for sure. i recommend
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Reviewed in the United States on April 22, 2025
★★★★★ 5
Kids?
Size: Medium, Color: (025) Castlerock / Castlerock / Anthracite
I didn’t realize these were kids socks, until after I got them, but the fit is amazing and they stay put, without coming off my heels. I wear an 8.5-9 in women’s shoes.
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Reviewed in the United States on March 8, 2026
★★★★★ 5
Great socks
My fav socks. I am a size 9 women’s and they fit perfect. They are soft and comfortable
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Great socks!
These are great low cut socks with padding in appropriate places. The shape keeps them from sliding down in my tennis shoes. I just wish more than three pair came in the pack.
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Reviewed in the United States on April 9, 2026