{"product_id":"honda-radiator-cap-19045-paa-a01-oem-replacement-factory-pressure-rated-seal-fits-compatible-honda-engines","title":"Honda Radiator Cap 19045-PAA-A01 OEM replacement — factory pressure-rated seal, fits compatible Honda engines","description":"\u003cp\u003e\u003cstrong\u003eThe Honda 19045-PAA-A01 is a genuine OEM radiator cap designed to maintain correct cooling system pressure for Honda engines and ensure dependable heat management.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis genuine Honda radiator cap (model 19045-PAA-A01) replaces worn or damaged caps to restore factory-specified pressure control, reduce coolant loss, and help prevent overheating caused by pressure failures. Manufactured to the original specifications, it fits compatible Honda models and marine applications where the correct pressure-rating and seal profile are required. The part ships in compact packaging and is produced in China under Honda’s quality controls.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this radiator cap affect engine cooling performance?\u003c\/h3\u003e\n\u003cp\u003eBy keeping system pressure within the design range, this cap raises the boiling point of coolant and reduces the chance of steam pockets forming. That helps the cooling system operate efficiently under normal load and during higher temperatures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaintains factory-specified pressure to prevent premature boiling\u003c\/li\u003e\n  \u003cli\u003eSecures a tight seal to limit coolant evaporation and leakage\u003c\/li\u003e\n  \u003cli\u003ePromotes consistent coolant flow and heat transfer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and systems is part number 19045-PAA-A01 compatible with?\u003c\/h3\u003e\n\u003cp\u003eThis is an OEM Honda part intended for the models and systems that call for the 19045-PAA-A01 specification. Always cross-check your vehicle’s parts manual or compatibility list before ordering to confirm fitment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for Honda cooling systems requiring the 19045-PAA-A01 cap\u003c\/li\u003e\n  \u003cli\u003eCommonly used on compatible Honda engines and model-year ranges\u003c\/li\u003e\n  \u003cli\u003eIdeal for replacing older or leaking caps to restore factory performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I look for when replacing my radiator cap?\u003c\/h3\u003e\n\u003cp\u003eInspect the cap for worn seals, corrosion, or a loss of spring tension. If you notice coolant loss, swelling hoses, or overheating symptoms, replacing the cap with a genuine OEM unit is a straightforward maintenance step.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCheck the rubber gasket for cracks or hardening\u003c\/li\u003e\n  \u003cli\u003eConfirm spring and pressure valve move freely and are not corroded\u003c\/li\u003e\n  \u003cli\u003eReplace with the exact part number to maintain correct pressure rating\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and when should I replace it?\u003c\/h3\u003e\n\u003cp\u003eInstallation is quick and typically requires only hand tools: remove the old cap when the engine is cool, clean the filler neck, and fit the new cap until it clicks or locks. Replace it immediately if the seal is compromised or during scheduled cooling-system maintenance every few years.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSimple hand-installation—do not open a hot system\u003c\/li\u003e\n  \u003cli\u003eReplace if you detect leaks, pressure loss, or visible wear\u003c\/li\u003e\n  \u003cli\u003eRecommended at routine coolant change intervals or as-needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis Honda 19045-PAA-A01 radiator cap is for owners, mechanics, and marine enthusiasts who want an exact-fit OEM replacement to preserve cooling performance. It suits anyone maintaining a Honda-powered vehicle or equipment that requires the original pressure-rated cap: from DIY mechanics prepping for seasonal service to professional shops restoring system integrity. Choose the genuine Honda part to match factory tolerances and avoid fitment or pressure mismatches with aftermarket alternatives.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eProduct details:\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eManufacturer model: 19045-PAA-A01\u003c\/li\u003e\n  \u003cli\u003ePackage dimensions: 11\" L x 7\" W x 3\" H\u003c\/li\u003e\n  \u003cli\u003eItem package weight: 2 pounds\u003c\/li\u003e\n  \u003cli\u003eCountry of origin: China\u003c\/li\u003e\n\u003c\/ul\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: Is this the original equipment manufacturer (OEM) cap?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 19045-PAA-A01 is a genuine Honda OEM radiator cap made to factory specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I replace the cap myself?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. Replace only when the engine is cool; remove the old cap, clean the neck, and install the new cap by hand.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Honda","offers":[{"title":"Default Title","offer_id":48087504978078,"sku":"B00BFDFP60","price":34.97,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/honda-radiator-cap-front-view.jpg?v=1785924973","url":"https:\/\/northtrailauto.ca\/products\/honda-radiator-cap-19045-paa-a01-oem-replacement-factory-pressure-rated-seal-fits-compatible-honda-engines","provider":"North Trail Auto","version":"1.0","type":"link"}