{"product_id":"denso-k20hr-u11-spark-plugs-6-pack-standard-u-groove-oem-fit-reliable-ignition","title":"Denso K20HR-U11 Spark Plugs 6-Pack — Standard U-Groove OEM Fit, Reliable Ignition","description":"\u003cp\u003e\u003cstrong\u003eThese are genuine Denso K20HR-U11 (part #3381) standard U-groove spark plugs sold as a 6-pack for direct vehicle replacement.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned and manufactured by Denso, the K20HR-U11 spark plug (part number 3381) is a standard U-groove design intended for reliable ignition performance in compatible engines. This listing supplies six authentic Denso spark plugs in original packaging, offering a straightforward way to replace worn plugs and maintain ignition consistency. The plugs are produced to factory tolerances and include the necessary hardware for installation where applicable.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles are compatible with the Denso K20HR-U11 spark plug?\u003c\/h3\u003e\n\u003cp\u003eCompatibility depends on the engine model and factory specifications; Denso parts are used by many Japanese and international manufacturers. Always verify fitment using the vehicle's service manual or an online confirm-fit tool before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCross-reference part number 3381 or K20HR-U11 with your vehicle's plug chart.\u003c\/li\u003e\n  \u003cli\u003eUse VIN-based fitment lookup or retailer confirm-fit features.\u003c\/li\u003e\n  \u003cli\u003eCheck electrode gap and reach to match OEM specs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these U-groove plugs affect everyday driving and starting?\u003c\/h3\u003e\n\u003cp\u003eThe U-groove tip design focuses the spark and promotes consistent ignition across normal driving conditions, helping steady starts and mid-range throttle response. They are a standard-performance option rather than a high-performance or iridium model.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eU-groove tip concentrates spark for reliable combustion under typical loads.\u003c\/li\u003e\n  \u003cli\u003eStandard construction keeps cost and replacement frequency in line with OEM recommendations.\u003c\/li\u003e\n  \u003cli\u003eSuitable for engines designed for conventional nickel\/alloy plugs rather than specialty electrodes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I know about installation and maintenance of these plugs?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone comfortable with basic engine service: remove old plugs, check and set the gap if necessary, and torque to the manufacturer's specification. Use anti-seize and proper torque to avoid damage to the plug or cylinder head.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify and, if required, adjust electrode gap to OEM value before fitting.\u003c\/li\u003e\n  \u003cli\u003eTighten using a torque wrench to the vehicle maker's specified torque.\u003c\/li\u003e\n  \u003cli\u003eReplace ignition boots or coils as needed to ensure good electrical connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat does the 6-pack include and why buy a set?\u003c\/h3\u003e\n\u003cp\u003eThis product supplies six Denso-branded K20HR-U11 spark plugs, packaged as genuine replacement parts. Buying a complete pack is practical for multi-cylinder engines and ensures uniform wear and performance across all cylinders.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSix genuine Denso K20HR-U11 (part #3381) spark plugs in original packaging.\u003c\/li\u003e\n  \u003cli\u003eIncludes standard installation hardware where applicable.\u003c\/li\u003e\n  \u003cli\u003eCost-effective and convenient for 4-, 6-, or 8-cylinder engine maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This 6-pack of Denso K20HR-U11 standard U-groove spark plugs is aimed at DIY mechanics, professional technicians, and vehicle owners who need authentic OEM-grade replacement plugs for compatible engines. It fits buyers who prioritize straightforward, reliable ignition parts at a reasonable price and who will confirm fitment with their vehicle specifications before installation.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these Denso plugs genuine OEM parts?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — this listing is for genuine Denso K20HR-U11 spark plugs (part #3381) sold in original packaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do I confirm these plugs fit my car?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Check your vehicle's service manual, use a VIN-based fitment lookup, or match part #3381\/K20HR-U11 with OEM plug specifications.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Denso","offers":[{"title":"Default Title","offer_id":48084131250334,"sku":"B00S3GIGTU","price":75.16,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/denso-k20hr-u11-front-packaging.jpg?v=1785847055","url":"https:\/\/northtrailauto.ca\/products\/denso-k20hr-u11-spark-plugs-6-pack-standard-u-groove-oem-fit-reliable-ignition","provider":"North Trail Auto","version":"1.0","type":"link"}