{"product_id":"gates-engine-coolant-thermostat-oe-type-190º-reverse-poppet-o-ring-seal","title":"Gates Engine Coolant Thermostat OE-Type 190º – Reverse Poppet, O‑Ring Seal","description":"\u003cstrong\u003eThe Gates 33915 OE Type Engine Coolant Thermostat is a factory-calibrated, OEM-equivalent thermostat that opens at 190º and provides precise engine temperature control with a leak‑resistant fit.\u003c\/strong\u003e\n\n\u003cp\u003eThis thermostat from Gates is built to mirror original equipment performance while offering dependable temperature regulation for gasoline and diesel engines that require a 190º reverse poppet design. Engineered with attention to calibration and sealing, it replaces worn or failing thermostats and restores correct coolant flow behavior without modifying the vehicle’s cooling system. The part includes factory-tested components—jiggle pins for venting and an integrated O‑ring—to help ensure smooth, predictable operation under normal driving conditions.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the Gates 33915 maintain accurate engine temperature?\u003c\/h3\u003e\n\u003cp\u003eGates uses quality-controlled factory calibration so the valve opens and closes at the intended temperature regardless of pressure fluctuations in the cooling system. The reverse poppet mechanism actuates consistently to route coolant when the engine reaches the design threshold.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrecision-calibrated wax element set to open at 190º.\u003c\/li\u003e\n  \u003cli\u003eReverse poppet design for correct flow patterns in compatible engines.\u003c\/li\u003e\n  \u003cli\u003eFactory testing reduces variance between units for predictable operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this thermostat fit my vehicle and seal properly?\u003c\/h3\u003e\n\u003cp\u003eThe 33915 is manufactured to match OE fit, function and design so it installs like the original component. It includes seals and an O‑ring designed to reproduce the original sealing surfaces to minimize leaks after installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOE-equivalent dimensions for direct replacement without modification.\u003c\/li\u003e\n  \u003cli\u003eIncluded O‑ring and seals mimic original gasket behavior.\u003c\/li\u003e\n  \u003cli\u003eDesigned to work with the vehicle’s existing housing and hoses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat features help prevent air pockets and coolant leaks?\u003c\/h3\u003e\n\u003cp\u003eGates adds jiggle pins to the thermostat to allow trapped air to escape during filling and warm-up, which helps reduce hot spots and false temperature readings. The unit’s sealing components and precise fit help maintain a leak-free assembly when installed correctly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eJiggle pins for effective air venting during coolant fill and warm-up.\u003c\/li\u003e\n  \u003cli\u003eCompression-seal O‑ring to guard against coolant seepage at the housing interface.\u003c\/li\u003e\n  \u003cli\u003eRobust construction resists common wear points that cause leaks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow is this thermostat manufactured to match original equipment?\u003c\/h3\u003e\n\u003cp\u003eGates follows OE design practices for geometry, materials and calibration to ensure the thermostat reproduces the intended cooling behavior. Each unit undergoes factory verification so opening\/closing performance aligns with vehicle specifications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOEM-style materials and dimensional tolerances for reliable interchangeability.\u003c\/li\u003e\n  \u003cli\u003eControlled calibration process to maintain temperature accuracy across production lots.\u003c\/li\u003e\n  \u003cli\u003eFunctionally equivalent components such as the reverse poppet and sealing system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: The Gates 33915 is ideal for technicians, DIY mechanics and fleet managers seeking a direct-replacement thermostat that mirrors original equipment performance. Choose this part when your vehicle specifies a 190º reverse poppet, OEM-type thermostat and you want a unit with factory calibration, air-venting jiggle pins and integrated seals for a dependable, leak-minimizing installation.\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 temperature does the Gates 33915 open at?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The Gates 33915 is calibrated to open at 190º Fahrenheit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this thermostat include seals for installation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, it includes the O‑ring and seals designed to replicate the original equipment fit.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Gates","offers":[{"title":"Default Title","offer_id":55168421855575,"sku":"B000CHIKDA","price":48.25,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/gates-thermostat-front-view.jpg?v=1790403526","url":"https:\/\/britishgarage.co.uk\/products\/gates-engine-coolant-thermostat-oe-type-190%c2%ba-reverse-poppet-o-ring-seal","provider":"British Garage","version":"1.0","type":"link"}