{"product_id":"toyota-radiator-cap-sub-assembly-16401-31650-oem-replacement","title":"Toyota Radiator Cap Sub-Assembly 16401-31650 | OEM Replacement","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Toyota Radiator Cap Sub-Assembly (16401-31650) is a direct OEM replacement designed to restore the original cooling system performance. It endures engine heat and cycling pressure, helping keep coolant secure within the radiator as you drive. This is a practical component that supports the smooth operation of your vehicle’s cooling loop.\u003c\/p\u003e\n\u003cp\u003eDesigned to meet original part specifications, this cap ensures exact fitment with compatible Toyota radiators. The precise threading and seating surface create a dependable seal, reducing the chance of coolant leaks after replacement. The cap’s robust construction is built to resist cracking and warping even under temperature fluctuations and long drives.\u003c\/p\u003e\n\n\u003ch3\u003eOEM Fidelity and Fit\u003c\/h3\u003e\n\u003cp\u003eEngineered to the same standards as the original equipment, the sub-assembly aligns with the mounting points and sealing surface of the radiator neck. This alignment supports consistent pressure management and helps maintain the intended cooling system dynamics across the life of the vehicle.\u003c\/p\u003e\n\n\u003ch3\u003eDurability for Everyday Driving\u003c\/h3\u003e\n\u003cp\u003eThe radiator cap is designed with materials chosen for heat resistance and long-term resilience. In real-world conditions—whether during city commutes, highway journeys, or seasonal temperature shifts—the cap aims to stay intact, reducing the likelihood of seal wear that could lead to minor leaks or pressure loss.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOEM-spec design for precise fit and reliable seal\u003c\/li\u003e\n  \u003cli\u003eDurable materials built to handle heat and pressure\u003c\/li\u003e\n  \u003cli\u003eExact fitment ensures compatibility with Toyota radiators that use 16401-31650\u003c\/li\u003e\n  \u003cli\u003eSimple replacement with common hand tools and straightforward installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eTwo practical bullet points for real-world use:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHelps maintain radiator pressure stability to support cooling system performance\u003c\/li\u003e\n  \u003cli\u003eReduces coolant loss risk by providing a tight, durable seal under pressure\u003c\/li\u003e\n  \u003cli\u003eSuitable for routine maintenance during service intervals or part upgrades\u003c\/li\u003e\n  \u003cli\u003ePart of a proactive approach to cooling system reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat to Expect During Replacement\u003c\/h3\u003e\n\u003cp\u003eWhen replacing, ensure the engine is cool before handling the cap. Hand-tighten the new cap until snug and inspect the seating surface for cleanliness. The replacement process is straightforward and does not require specialized tools beyond standard hand tools.\u003c\/p\u003e\n\n\u003cp\u003eFor Toyota vehicles requiring part 16401-31650, this radiator cap sub-assembly offers a practical path to restore original performance characteristics. Consider it as part of a regular maintenance plan to preserve the integrity of the cooling system, especially if you notice signs of cap wear or seal degradation. While results can vary by vehicle and driving conditions, choosing a genuine replacement supports your maintenance goals with a straightforward, OEM-aligned option.\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 is the purpose of the Toyota Radiator Cap Sub-Assembly?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: To seal the radiator and help maintain proper cooling system pressure for consistent performance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Why choose this OEM replacement?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It is designed to meet original specifications for precise fit and durable operation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Toyota","offers":[{"title":"Default Title","offer_id":42469291425877,"sku":"B00GD3171E","price":35.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/toyota-radiator-cap-sub-assembly-front-view.jpg?v=1778089616","url":"https:\/\/plentytorque.co.uk\/products\/toyota-radiator-cap-sub-assembly-16401-31650-oem-replacement","provider":"PlentyTorque","version":"1.0","type":"link"}