{"product_id":"mishimoto-high-pressure-radiator-cap-1-3-bar-31-32-mm-alloy-steel-screw-in-seal","title":"Mishimoto high-pressure radiator cap 1.3 bar (31–32 mm) — alloy steel, screw-in seal","description":"\u003cstrong\u003eThe Mishimoto MMRC-13-SM is a high-pressure radiator cap that raises your cooling system to 1.3 bar (19 psi) for improved boiling resistance and reliable sealing on 31–32 mm fill necks.\u003c\/strong\u003e\n\n\u003cp\u003eSwap a weak or stock radiator cap for the Mishimoto MMRC-13-SM when you need a simple, durable upgrade that helps your cooling system tolerate higher temperatures and more demanding driving. Built from corrosion-resistant alloy steel with an ergonomic screw-in design and painted finish, this cap replaces typical factory units that aren’t intended for elevated pressures. It is engineered to fit most vehicle radiator necks sized 31–32 mm and installs without modifications.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this radiator cap improve cooling system performance?\u003c\/h3\u003e\n\u003cp\u003eBy increasing the closed-system pressure to 1.3 bar (19 psi), the cap raises the coolant’s boiling point, giving the system more margin before vaporization occurs. That means less risk of localized boiling under hard driving or high ambient temperatures, which helps preserve coolant volume and consistent heat transfer.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncreases system pressure to 1.3 bar (19 psi)\u003c\/li\u003e\n  \u003cli\u003eReduces likelihood of coolant boiling and vapor lock\u003c\/li\u003e\n  \u003cli\u003eMaintains coolant volume under load for steadier temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this cap fit my car’s radiator neck?\u003c\/h3\u003e\n\u003cp\u003eThe MMRC-13-SM is designed for universal compatibility with standard 31–32 mm fill necks, making it suitable for a wide range of cars and light trucks. It will not fit KTM stock radiators; always verify your radiator neck diameter before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 31–32 mm standard radiator fill necks\u003c\/li\u003e\n  \u003cli\u003eSimple swap — no cutting, adapters, or special tools required\u003c\/li\u003e\n  \u003cli\u003eConfirm vehicle radiator neck size to ensure compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and design features ensure durability?\u003c\/h3\u003e\n\u003cp\u003eThe cap’s body is machined from high-strength alloy steel and finished with a protective paint to resist corrosion and wear. A precision-threaded, screw-in design provides a tight seal, and the assembly is built to remain dependable through repeated removal and reinstallation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCorrosion-resistant alloy steel construction\u003c\/li\u003e\n  \u003cli\u003ePainted finish for long-term protection\u003c\/li\u003e\n  \u003cli\u003eErgonomic screw-in shape for reliable sealing and easy handling\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and everyday use?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward: remove your existing cap and thread the Mishimoto cap into place. The ergonomic shape lets you install and remove the cap by hand; no special tools or mechanical modifications are necessary.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTool-free installation for most users\u003c\/li\u003e\n  \u003cli\u003eOEM-style fitment and feel for seamless replacement\u003c\/li\u003e\n  \u003cli\u003eDesigned to hold seal after repeated removals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Mishimoto MMRC-13-SM is aimed at drivers who push their cooling systems harder than stock conditions warrant — including performance builds, turbocharged vehicles, and owners in hot climates — as well as anyone wanting a robust OEM-style replacement cap. If your vehicle uses a 31–32 mm radiator neck and you want a corrosion-resistant, higher-pressure cap to increase boiling resistance and reduce coolant loss, this Mishimoto cap is a compact, reliable upgrade backed by a company known for thermal management components.\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 pressure does the MMRC-13-SM hold?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It holds 1.3 bar (19 psi), increasing the coolant boiling point for better thermal margin.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this cap fit my radiator?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits standard 31–32 mm fill necks. It will not fit stock KTM radiators—measure before buying.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Mishimoto","offers":[{"title":"Default Title","offer_id":48085970452638,"sku":"B00U2BQJ6Q","price":43.92,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/mishimoto-cap-front-view.jpg?v=1785881905","url":"https:\/\/northtrailauto.ca\/products\/mishimoto-high-pressure-radiator-cap-1-3-bar-31-32-mm-alloy-steel-screw-in-seal","provider":"North Trail Auto","version":"1.0","type":"link"}