The Spark Plug BR9HS-10 (86-4551) provides greater ignitability, increased throttle response, and superior anti-fouling for the performance enthusiast. The laser-welded small Iridium tip ensures long-term endurance and a steady spark, while the tapered ground electrode lessens the influence of electrical quenching. A longer insulator nose prevents fouling, corrugated ribs on the insulator prevent flashover, and a triple gasket seal prevents combustion gas leakage. Spark Plug BR9HS-10 (86-4551) has a high melting point, which makes it resistant to heat and electrical wear, making it excellent for today's high-performance engines.
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We can ship to virtually any address in the US. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.)
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.
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