{"id":17895,"date":"2025-05-28T18:21:03","date_gmt":"2025-05-28T15:21:03","guid":{"rendered":"https:\/\/www.mwsteel.eu\/?post_type=product&#038;p=17895"},"modified":"2026-09-18T13:52:38","modified_gmt":"2026-09-18T10:52:38","slug":"hks-spark-plug-m40-x","status":"publish","type":"product","link":"https:\/\/www.mwsteel.eu\/en\/product\/hks-spark-plug-m40-x\/","title":{"rendered":"HKS Spark Plug M40-X"},"content":{"rendered":"<p>We offer a full selection of HKS Super Fire Racing family of spark plugs optimized for race and tuning applications, featuring reinforced ignition capabilities, durability and anti-insulation.<\/p>\n<p>The thermal edge of the ceramic insulator discharges to help decrease carbon deposits under long idling.<\/p>\n<p>Their iridium alloy center electrode reduces voltage requirements and improves ignition performance and durability.<\/p>\n<p>Heat ranges are designed to withstand high temperatures and pressures under demanding race conditions.<\/p>\n<p>It is designed for small compact cars.<\/p>\n<p>Applications can include:<\/p>\n<p>Some Mitsubishi (e.g., i, Minica, Pajero Mini, Toppo BJ, Town Box, Delica D:2)<\/p>\n<p>Some Suzuki (e.g., Jimny, Swift, Alto, Carry, Every, Cappuccino, Wagon R, MR Wagon, Kei)<\/p>\n<p>Some Daihatsu (e.g., Boon, Coo, Mira, Move, Terios)<\/p>\n<p>Some Mazda (e.g., AZ Wagon, AZ-1, AZ-Offroad, Carol, Scrum, Spiano)<\/p>\n<p>Some Nissan (e.g., Moco, Ottis)<\/p>\n<p>Some Subaru (e.g., Dex, Pleo, Vivio)<\/p>\n<p>Certain Audi (e.g., A3, A4, TT Quattro) and Volkswagen (e.g., Eos, Golf MK4) models.<\/p>\n<p>Certain BMW models (e.g., M3, Z3).<\/p>\n<p>The heat range is 40 (NGK 8 equivalent).<\/p>\n<p>The chart below illustrates the respective Denso and NGK heat range indexes.<\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-17801\" src=\"https:\/\/www.mwsteel.eu\/wp-content\/uploads\/2025\/05\/HKS-lampoarvotaulukko-325x57.jpg\" alt=\"\" width=\"530\" height=\"93\" srcset=\"https:\/\/www.mwsteel.eu\/wp-content\/uploads\/2025\/05\/HKS-lampoarvotaulukko-325x57.jpg 325w, https:\/\/www.mwsteel.eu\/wp-content\/uploads\/2025\/05\/HKS-lampoarvotaulukko-600x104.jpg 600w, https:\/\/www.mwsteel.eu\/wp-content\/uploads\/2025\/05\/HKS-lampoarvotaulukko.jpg 707w\" sizes=\"(max-width: 530px) 100vw, 530px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<h4>Technical specifications<\/h4>\n<ul>\n<li>The HKS M40-X spark plug features M12 x 19 thread and a wrench size 16 mm \/ 5\/8&quot;.<\/li>\n<\/ul>\n","protected":false},"featured_media":17804,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[1046],"product_tag":[],"class_list":["post-17895","product","type-product","status-publish","has-post-thumbnail","product_cat-spark-plugs","pa_tuotteet-hks-en","first","onbackorder","taxable","shipping-taxable","purchasable","product-type-variable"],"_links":{"self":[{"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/product\/17895","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/comments?post=17895"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/media\/17804"}],"wp:attachment":[{"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/media?parent=17895"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/product_brand?post=17895"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/product_cat?post=17895"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.mwsteel.eu\/en\/wp-json\/wp\/v2\/product_tag?post=17895"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}