{"id":11855,"date":"2026-09-30T10:39:49","date_gmt":"2026-09-30T10:39:49","guid":{"rendered":"https:\/\/shop.autoboss.com\/?post_type=product&#038;p=11855"},"modified":"2026-10-09T08:20:30","modified_gmt":"2026-10-09T08:20:30","slug":"mrcartool-h90-spark-plug-tester-tool-dual-hole","status":"publish","type":"product","link":"https:\/\/autoboss.com\/es\/product\/mrcartool-h90-spark-plug-tester-tool-dual-hole\/","title":{"rendered":"MRCARTOOL H90 Dual-Hole Spark Plug Tester with 500-9000 RPM Digital Adjustment"},"content":{"rendered":"<div class=\"abd-pd\" data-abd-version=\"1\">\n<header class=\"abd-hero\">\n<h3>Compare Two Spark Plugs Side by Side Under Simulated Engine Speeds<\/h3>\n<p class=\"abd-lead\">The H90 fires two spark plugs at once so you can compare their ignition strength while simulating real engine conditions, with the simulated RPM shown on a digital display. It is intended for spark plugs from 12V gasoline vehicles.<\/p>\n<ul class=\"abd-facts\">\n<li>Dual Test Sockets<\/li>\n<li>500\u20139000 RPM<\/li>\n<li>Height-Adjustable Sockets<\/li>\n<li>Battery Clamp Power<\/li>\n<li>Digital Display<\/li>\n<\/ul>\n<\/header>\n<section class=\"abd-sec\" id=\"abd-features\">\n<h4>Key Features<\/h4>\n<ol class=\"abd-features\">\n<li>\n<h5>Dual-Socket Testing<\/h5>\n<p>Test two spark plugs simultaneously to quickly identify a faulty plug.<\/p>\n<\/li>\n<li>\n<h5>Adjustable Socket Height<\/h5>\n<p>Accepts standard spark plugs as well as the longer plugs used in BMW, Volkswagen and Audi vehicles.<\/p>\n<\/li>\n<li>\n<h5>Battery Clamp Connection<\/h5>\n<p>No power outlet needed; connect the clamps directly to the battery.<\/p>\n<\/li>\n<li>\n<h5>Digital RPM Control<\/h5>\n<p>Turn the knob to set the simulated speed and read the value on the display; different speeds represent different working conditions.<\/p>\n<\/li>\n<\/ol>\n<\/section>\n<section class=\"abd-sec abd-hls\" id=\"abd-highlights\">\n<h4>Highlights<\/h4>\n<figure class=\"abd-hl\"><img decoding=\"async\" src=\"https:\/\/autoboss.com\/wp-content\/uploads\/mrcartool-catalog\/media\/d8c02e96bf900b7d33bde545.jpg\" alt=\"Two spark plugs firing in the MRCARTOOL H90 dual test sockets\" width=\"1200\" height=\"1200\" loading=\"lazy\"><figcaption>\n<h5>Two Plugs at Once<\/h5>\n<p>Each socket has its own signal lamp for side-by-side comparison.<\/p>\n<\/figcaption><\/figure>\n<figure class=\"abd-hl\"><img decoding=\"async\" src=\"https:\/\/autoboss.com\/wp-content\/uploads\/mrcartool-catalog\/media\/09b5937f06a8f71c1775a7e1.jpg\" alt=\"H90 with a long and a standard spark plug in height-adjusted sockets\" width=\"1200\" height=\"1200\" loading=\"lazy\"><figcaption>\n<h5>Long and Standard Plugs<\/h5>\n<p>Raise the socket to fit longer spark plugs.<\/p>\n<\/figcaption><\/figure>\n<figure class=\"abd-hl\"><img decoding=\"async\" src=\"https:\/\/autoboss.com\/wp-content\/uploads\/mrcartool-catalog\/media\/c052635dcf30756e9d780cdf.jpg\" alt=\"H90 connected to a 12V battery with red and black clamps\" width=\"1200\" height=\"1200\" loading=\"lazy\"><figcaption>\n<h5>Powered From the Battery<\/h5>\n<p>Red and black clamps connect the tester to a 12V battery.<\/p>\n<\/figcaption><\/figure>\n<figure class=\"abd-hl\"><img decoding=\"async\" src=\"https:\/\/autoboss.com\/wp-content\/uploads\/mrcartool-catalog\/media\/5286f97c03b58ba9efb5c529.jpg\" alt=\"H90 digital display showing the simulated engine speed\" width=\"1200\" height=\"1200\" loading=\"lazy\"><figcaption>\n<h5>Speed on Display<\/h5>\n<p>The digital readout shows the simulated RPM as you adjust it.<\/p>\n<\/figcaption><\/figure>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-compare\">\n<h4>Basic Version vs H90<\/h4>\n<div class=\"abd-table-wrap\">\n<table class=\"abd-table abd-compare\">\n<thead>\n<tr>\n<th scope=\"col\"><\/th>\n<th scope=\"col\">Basic Version<\/th>\n<th scope=\"col\" class=\"is-current\">H90<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th scope=\"row\">Simulated RPM<\/th>\n<td>0\u20136000 rpm<\/td>\n<td class=\"is-current\">500\u20139000 rpm<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">HD digital display<\/th>\n<td>No<\/td>\n<td class=\"is-current\">Yes<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Battery clip design<\/th>\n<td>No<\/td>\n<td class=\"is-current\">Yes<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Adjustable socket height<\/th>\n<td>No<\/td>\n<td class=\"is-current\">Yes<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Long spark plug testing<\/th>\n<td>No<\/td>\n<td class=\"is-current\">Yes<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Safety protection cover<\/th>\n<td>Yes<\/td>\n<td class=\"is-current\">No<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-box\">\n<h4>What&#8217;s in the Box<\/h4>\n<ul class=\"abd-box\">\n<li>H90 main unit<\/li>\n<li>Battery clamp cable<\/li>\n<li>User manual<\/li>\n<\/ul>\n<figure class=\"abd-fig\"><img decoding=\"async\" src=\"https:\/\/autoboss.com\/wp-content\/uploads\/mrcartool-catalog\/media\/bb3e1aa1bd0978cf51081b76.jpg\" alt=\"MRCARTOOL H90 main unit, battery clamp cable, retail box and user manual\" width=\"1200\" height=\"1200\" loading=\"lazy\"><figcaption>H90 package contents.<\/figcaption><\/figure>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-use\">\n<h4>How to Use<\/h4>\n<ol class=\"abd-steps\">\n<li><b>Fit the plugs<\/b><span>Adjust the socket height and insert each spark plug into a test socket.<\/span><\/li>\n<li><b>Connect the clamps<\/b><span>Attach the red clamp to the positive terminal and the black clamp to the negative terminal.<\/span><\/li>\n<li><b>Switch on<\/b><span>Turn the switch and observe how the spark plugs work.<\/span><\/li>\n<li><b>Compare<\/b><span>Adjust the simulated RPM and compare the plugs under different working conditions.<\/span><\/li>\n<\/ol>\n<\/section>\n<section class=\"abd-sec\" id=\"abd-notes\">\n<h4>Good to Know<\/h4>\n<div class=\"abd-notes\">\n<div class=\"abd-note-group is-caution\">\n<h5><span class=\"abd-tag\">Caution<\/span><\/h5>\n<ul>\n<li>Spark plug voltage reaches tens of thousands of volts during operation; never touch the plugs while testing.<\/li>\n<li>Switch off the power before inserting or removing a spark plug.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"<ul>\n<li><strong>Adjustable Hole Position Height:<\/strong> The height ofthe test socket is adjustable supporting not only standard spark plugs but also accommodating longer spark plugs used in BMW, Volkswagen, and Audi vehicles.<\/li>\n<li><strong>Battery Clip Design:<\/strong> Efficient and convenient, no power outlet required.Testing can be performed by connecting directly to the battery.<\/li>\n<li><strong>After-Sales Service:<\/strong> 48 months warranty and 7\u00d724 hours friendly customer service to ensure your shopping experience.<\/li>\n<li>.<a href=\"https:\/\/api.whatsapp.com\/send\/?phone=%2B8618923768146&amp;text=onlinesupport\"><span style=\"color: #d83131\"><strong>Online Support&gt;&gt;<\/strong><\/span><\/a><\/li>\n<\/ul>","protected":false},"featured_media":12434,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":""},"product_brand":[126],"product_cat":[103],"product_tag":[],"class_list":["post-11855","product","type-product","status-publish","has-post-thumbnail","product_brand-mrcartool","product_cat-spark-plug-tester","first","instock","sale","shipping-taxable","purchasable","product-type-variable"],"_links":{"self":[{"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/product\/11855","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/comments?post=11855"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/media\/12434"}],"wp:attachment":[{"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/media?parent=11855"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/product_brand?post=11855"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/product_cat?post=11855"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/autoboss.com\/es\/wp-json\/wp\/v2\/product_tag?post=11855"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}