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The NGK 3981 is a single iridium spark plug (stock number 3981, also sold as BKR6EIX-11) for gasoline engines. Its fine iridium center electrode and tapered ground electrode give a strong, consistent spark and resist wear far longer than standard copper or platinum plugs. It is a direct-fit replacement for many four-cylinder cars and small engines that call for that heat range and thread. Reviewers rate it highly for smooth idle and easy starting, though a few note it costs more than a basic plug and counterfeit units circulate online.
In stock
In stockSold by MotomentumReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
In stockSold by sixity
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Lowest price we've seen: $25.90 on Nov 10 at RV & Auto Parts. Tracked across 2 stores since Nov 10.
Owners rate the NGK 3981 well, praising smooth idle, quick starts and long life. A few warn about fakes and about matching the part number carefully.
NGK Spark Plugs (U.S.A.), Inc. is the largest OE supplier and manufacturer of spark plugs for domestic and import vehicles in North America. Its OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist. With over 80 years of automotive expertise NGK has built a reputation for quality and reliability; manufacturing spark plugs for virtually every automotive, motorcycle, marine and small engine application. We are committed to be the premier partner with our customers, while maintaining original equipment standards for the highest durability and operational performance. With state-of-the-art manufacturing, inventory and distribution facilities in North America and across the globe, NGK is dedicated to providing customers with world-class products and services.
