{"product_id":"ap-astro-pneumatic-tool-company-radiator-pressure-tester-vacuum-cooling-system-kit-17-adapters-0-35-psi-gauge","title":"AP Astro Pneumatic Tool Company Radiator Pressure Tester \u0026 Vacuum Cooling System Kit — 17 Adapters, 0–35 psi Gauge","description":"\u003cp\u003e\u003cstrong\u003eAstro Tools 78585 is a complete radiator pressure tester and vacuum-assisted coolant purge and refill kit for diagnosing leaks and performing fast, clean coolant changes on most domestic and import vehicles.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis all-in-one kit combines a hand pressure pump, a 0–35 psi gauge, color-coded radiator test adapters, a vacuum purge\/refill assembly, a universal adapter, a temperature gauge and a blow-molded carrying case. It’s engineered so technicians and DIYers can pressurize the cooling system to check for cap or system leaks, then vacuum-fill the system to reduce air pockets and speed up coolant replacement. The vacuum connection is shaped to work with the majority of radiator openings, while the set of 17 test caps and two additional cap adapters simplify quick matching to vehicle-specific necks.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the pressure tester find cooling system leaks?\u003c\/h3\u003e\n\u003cp\u003eThe pressure pump pressurizes the cooling system through the appropriate test cap while the included gauge monitors pressure up to 35 psi (2.5 bar). Sustained pressure loss signals a leak in hoses, clamps, radiator cores, heater cores or the radiator cap. This controlled test helps pinpoint whether the cap is holding pressure or if another component is failing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHand pump with hose and quick coupler for safe pressurization\u003c\/li\u003e\n  \u003cli\u003e0–35 psi gauge for visible, accurate readings\u003c\/li\u003e\n  \u003cli\u003eColor-coded cap adapters to test original radiator cap sealing\u003c\/li\u003e\n  \u003cli\u003eQuick pressure release for safe depressurizing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the vacuum purge and refill tool speed up coolant changes?\u003c\/h3\u003e\n\u003cp\u003eThe vacuum purge\/refill tool creates negative pressure to draw old coolant out and pull new coolant into the cooling system without trapping air. Filling under vacuum minimizes foam and air pockets that can cause hot spots and erratic temperature readings. The process is faster and cleaner than traditional drain-and-fill methods.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVacuum-assisted purge removes trapped air and old coolant\u003c\/li\u003e\n  \u003cli\u003eUniversal adapter fits most radiator necks for broad compatibility\u003c\/li\u003e\n  \u003cli\u003eCleaner refill with less spillage and fewer top-ups needed\u003c\/li\u003e\n  \u003cli\u003eTemperature gauge included to monitor system during service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat vehicles and scenarios is this kit compatible with?\u003c\/h3\u003e\n\u003cp\u003eThis kit is intended for a wide range of domestic and import passenger cars, light trucks and many SUVs. The 17-piece cap set plus blue and black adapters cover the most common radiator necks and original cap sizes. It’s useful for routine maintenance, pre-purchase inspections, troubleshooting overheating, and verifying radiator cap function after repairs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e17 test caps for broad vehicle coverage\u003c\/li\u003e\n  \u003cli\u003eAdditional blue and black adapters for original cap confirmation\u003c\/li\u003e\n  \u003cli\u003eUniversal vacuum adapter reduces the need for multiple tools\u003c\/li\u003e\n  \u003cli\u003eBlow-molded case keeps components organized and transportable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I use the kit safely and effectively?\u003c\/h3\u003e\n\u003cp\u003eAlways work on a cool engine and release system pressure before removing any caps. Select the correct test cap, attach the pump assembly, and pressurize to the specified value for the vehicle; observe the gauge for drops. For filling, connect the vacuum refill tool per instructions and draw the cooling system under vacuum while adding fresh coolant. Follow vehicle manufacturer torque and fluid specifications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWork only on a cool engine; relieve pressure first\u003c\/li\u003e\n  \u003cli\u003eMatch the correct test cap before pressurizing\u003c\/li\u003e\n  \u003cli\u003eUse the quick release to depressurize safely\u003c\/li\u003e\n  \u003cli\u003eFollow coolant specs and disposal rules for used fluid\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Professional mechanics and knowledgeable DIY enthusiasts who perform cooling-system diagnostics and maintenance will get the most value from the Astro Tools 78585 kit. It’s aimed at users needing reliable pressure checks, cap testing, and a vacuum-assisted refill option that reduces air entrapment and speeds up service. The compact blow-molded case and broad adapter selection make it suitable for shop use, mobile technicians, and home garages handling a variety of domestic and import vehicles.\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: Can this kit test radiator caps from most cars?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit includes 17 test caps plus two cap adapters to match most domestic and import radiator necks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What pressure range does the gauge support?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The included gauge measures from 0 to 35 psi (0–2.5 bar), suitable for common radiator cap and system tests.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"AP Astro Pneumatic Tool Company","offers":[{"title":"Default Title","offer_id":48080156557470,"sku":"B0042KOK28","price":382.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/astro-78585-front-open-case.jpg?v=1785779370","url":"https:\/\/northtrailauto.ca\/products\/ap-astro-pneumatic-tool-company-radiator-pressure-tester-vacuum-cooling-system-kit-17-adapters-0-35-psi-gauge","provider":"North Trail Auto","version":"1.0","type":"link"}