Third-Party & Online Marketplace Purchases
Niterra North America, Inc. does not sell NGK or NTK products directly through Amazon, eBay, or any other online marketplace. Products purchased from third-party sellers on these platforms are not covered under Niterra’s warranty program.
If a marketplace directs you to contact the manufacturer for warranty support, please note:
• We cannot process these claims. We are unable to verify the authenticity, storage, or handling of products sold by third-party sellers.
• Contact the seller directly through the platform where you made your purchase.
• For full warranty coverage, purchase NGK and NTK products through our authorized distributor network or national automotive parts retailers.