{"product_id":"autool-spt360-spark-plug-tester-5-hole-200-9000rpm-12v-with-digital-display-adjustable-height","title":"AUTOOL SPT360 Spark Plug Tester 5-Hole 200–9000RPM 12V with Digital Display \u0026 Adjustable Height","description":"\u003cp\u003e\u003cstrong\u003eThe AUTOOL SPT360 is a 5-hole, 12V spark plug tester with adjustable RPM simulation (200–9000RPM) that lets you compare spark strength and stability on up to five plugs at once for fast ignition diagnostics.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact bench-style tester reproduces engine-like firing speeds and displays precise frequency settings so you can spot weak, inconsistent, or faulty spark plugs before they cause drivability issues. Built for garages, home mechanics, and fleet technicians, the SPT360 pairs a clear digital readout with a protective cover and safety interlocks to make high-voltage testing straightforward and safer than improvising with ad hoc setups.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the adjustable RPM range help diagnose spark plugs?\u003c\/h3\u003e\n\u003cp\u003eVarying the simulated RPM mimics real operating conditions so you can see how a plug behaves under different firing rates. Higher frequencies produce stronger sparks for testing intensity, while lower speeds reveal intermittent misfires or weak ignition under slow-cranking conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAdjustable 200–9000RPM to simulate idle through high-load firing.\u003c\/li\u003e\n  \u003cli\u003eFine-tune with plus\/minus controls and view exact frequency on the digital display.\u003c\/li\u003e\n  \u003cli\u003eUse higher RPM to test spark intensity; lower RPM to detect intermittent faults.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I test multiple cylinders at once, and what plugs fit?\u003c\/h3\u003e\n\u003cp\u003eThe SPT360’s five-bay design lets you inspect up to five spark plugs simultaneously, making side-by-side comparisons quick and reliable. Each hole accepts standard 12mm 12V gasoline spark plugs and includes an 8mm height adjustment to handle various plug lengths and seat depths.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFive test holes for multi-cylinder comparison and consistent evaluation.\u003c\/li\u003e\n  \u003cli\u003e12mm diameter compatibility with common 12V spark plugs used in cars, motorcycles, and marine engines.\u003c\/li\u003e\n  \u003cli\u003e8mm vertical adjustment to accommodate varying plug lengths and styles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat safety and protection features are included?\u003c\/h3\u003e\n\u003cp\u003eA transparent protective cover must remain closed during high-voltage testing to reduce electric-shock risk and contain sparks. The unit includes an intelligent detection system that halts testing if a plug is loose or improperly seated, preventing arcing, shorts, and potential device damage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClear safety cover that locks during live testing for operator protection.\u003c\/li\u003e\n  \u003cli\u003eAutomatic stop when poor contact or improper insertion is detected.\u003c\/li\u003e\n  \u003cli\u003eRobust housing and secure plug sockets for repeatable professional use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is it to read and control the tester?\u003c\/h3\u003e\n\u003cp\u003eA bright digital display shows the exact RPM setting while simple “+” and “–” buttons let you adjust frequency precisely. The intuitive controls and immediate visual feedback reduce guesswork so you can diagnose ignition issues faster, even in busy shop environments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDigital readout for precise RPM\/frequency values.\u003c\/li\u003e\n  \u003cli\u003eSimple plus\/minus controls for quick adjustments.\u003c\/li\u003e\n  \u003cli\u003eFast diagnosis workflow: set frequency, insert plugs, observe spark intensity and stability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: the AUTOOL SPT360 is designed for professional mechanics, service shops, motorcycle and marine technicians, and DIY enthusiasts who need a reliable, repeatable way to evaluate spark plug performance across multiple cylinders. If you routinely service gasoline engines, perform tune-ups, or need a safe bench tester to compare plug condition and ignition consistency, the SPT360 provides clear readouts, adjustable simulation, and protective safeguards that speed up diagnostics and reduce guesswork.\u003c\/p\u003e\n\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What spark plug sizes does this tester accept?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The SPT360 accepts standard 12mm 12V gasoline spark plugs and features an 8mm vertical adjustment for different plug lengths.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the tester safe to operate during live high-voltage tests?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. A locking transparent cover and an automatic stop for poor contact reduce shock and arcing risks during high-voltage testing.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"AUTOOL","offers":[{"title":"Default Title","offer_id":67586700837049,"sku":"B09NDNSQQ7","price":117.2,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/autool-spt360-front-panel.jpg?v=1790490471","url":"https:\/\/redleafauto.ca\/products\/autool-spt360-spark-plug-tester-5-hole-200-9000rpm-12v-with-digital-display-adjustable-height","provider":"Redleaf Auto","version":"1.0","type":"link"}