Best in 7 days
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- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 1 - Aug 6
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Description
NGK 6421 Spark PlugNGKs wide heat range results from using copper wire in place of the iron cores found in many conventional plugs Copper dissipates heat quicker, cooling the electrode and insulator tip Raised pre ignition rating with high conduction copper and long nose insulator Each meets the requirements of high performance engines Sold Individually
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.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.3 ★★★★★
Based on 337 reviews
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Product Reviews
★★★★★ 5
Very good for dry mouth
Size: 1.5 Fl Oz (Pack of 2)
If you have dry mouth issues, this product works great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
★★★★★ 3
Most cost effective product
Size: 1.5 Fl Oz (Pack of 2)
I have an issue with my mouth going dry due to CPAP use. This spray is better priced than other sprays but, not quite as refreshing. Due to the cost savings, I will continue to order this product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
★★★★★ 1
Awful taste
Size: 1.5 Fl Oz (Pack of 2)
It tastes terrible, and after trying to get used to it, it didn't work. I have used it three times a day and I still have no benefit from it. It feels very dry at night and aggravated my dry mouth when I woke up. I also purchased the toothpaste and the mouthwash to go with it and it was a total waste of money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2023
★★★★★ 5
Great dry mouth mouth wash
Size: 1.5 Fl Oz (Pack of 2)
This was for a friend and she says it really helps her so I would definitely give it a try !!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
★★★★★ 5
Dry mouth
Size: 1.5 Fl Oz (Pack of 2)
It works
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
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