{"product_id":"cmtool-exhaust-back-pressure-tester-kit-2-5in-dual-scale-gauge-6ft-heat-resistant-hose","title":"CMTOOL Exhaust Back Pressure Tester Kit — 2.5in Dual-Scale Gauge, 6ft Heat-Resistant Hose","description":"\u003cp\u003e\u003cstrong\u003eThe CMTOOL Exhaust Back Pressure Tester Kit is a complete diagnostic set that measures exhaust back pressure with a 2.5-inch dual-scale gauge, 6-foot high-temperature hose, adapters and clamps—neatly stored in a fitted carrying case.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDiagnosing exhaust restrictions, clogged catalytic converters or other flow issues is faster when you can accurately read back pressure near the driver's seat. This CMTOOL kit combines a large, color-coded gauge with an extended nitrile rubber hose and M12\/M18 adapters so technicians and DIYers can test at idle and under a 2,500 rpm load without moving around the vehicle. Everything fits into a durable molded case for transport and storage.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I use this tester to check exhaust performance?\u003c\/h3\u003e\n\u003cp\u003eAttach the appropriate M12 or M18 adapter to the exhaust port, connect the hose, and bring the 2.5\" gauge into the cabin or a convenient viewing position. Run the engine at idle and then at 2,500 rpm to compare readings against expected ranges; lower pressure indicates better flow.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eChoose M12 or M18 adapter to match your vehicle’s fitting.\u003c\/li\u003e\n  \u003cli\u003eClip hose to adapter, secure with one of the included clamps.\u003c\/li\u003e\n  \u003cli\u003eRead gauge values in PSI and bar; color ring shows status.\u003c\/li\u003e\n  \u003cli\u003eCompare: \u003cem\u003etarget \u0026lt;1.25 psi\u003c\/em\u003e at idle, \u0026lt;3 psi at 2,500 rpm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes the gauge and hose reliable for workshop use?\u003c\/h3\u003e\n\u003cp\u003eThe gauge is a high-definition 2.5-inch instrument with dual pressure units and a three-color visual band to speed interpretation. The hose is a thickened NBR nitrile rubber rated for high wear and around 70°C, enabling tests from the driver’s seat without heat damage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2.5\" gauge with PSI and bar scales and shock-absorbing rubber cover.\u003c\/li\u003e\n  \u003cli\u003eThree-color status indicator for quick pass\/fail reading.\u003c\/li\u003e\n  \u003cli\u003e6-foot nitrile hose resists heat and abrasion for workshop longevity.\u003c\/li\u003e\n  \u003cli\u003ePre-calibrated gauge; pointer adjustable to zero if shifted in transit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich accessories are included and how do they help on the job?\u003c\/h3\u003e\n\u003cp\u003eThe kit is supplied with threaded adapters and two hose clamps so you can make a sealed connection to most exhaust access points. A custom-molded carrying case keeps each component organized, protected and ready to go between jobs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eM12 and M18 threaded adapters for common test ports and fittings.\u003c\/li\u003e\n  \u003cli\u003eTwo hose clamps ensure leak-free connections during measurement.\u003c\/li\u003e\n  \u003cli\u003eCustom-molded black case prevents loss and protects tools in storage.\u003c\/li\u003e\n  \u003cli\u003eCompact layout makes it easy to carry and set up at roadside or in-shop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this kit designed for? If you are an automotive technician, fleet mechanic, or an experienced DIYer who diagnoses exhaust restrictions, emissions system issues, or performance losses, this CMTOOL back pressure tester provides fast, clear pressure data and the hardware to get accurate readings without repeated trips under the vehicle. It’s built to be portable, durable and straightforward to operate so you can diagnose exhaust flow problems quickly and return vehicles to service with confidence.\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: What threads do the included adapters fit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The kit includes M12 and M18 threaded adapters to fit common exhaust test ports.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are expected back pressure readings?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Typically lower than 1.25 psi at idle and below 3 psi at 2,500 rpm indicate normal flow.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CMTOOL","offers":[{"title":"Default Title","offer_id":55168421593431,"sku":"B0DJS7JX7H","price":63.81,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/cmtool-front-view-kit.jpg?v=1790403531","url":"https:\/\/britishgarage.co.uk\/products\/cmtool-exhaust-back-pressure-tester-kit-2-5in-dual-scale-gauge-6ft-heat-resistant-hose","provider":"British Garage","version":"1.0","type":"link"}