{"product_id":"toyota-diesel-oem-2l-2l-t-2l-te-3l-5l-82-c-thermostat-metal-gasket-hiace-hilux-surf-land-cruiser-prado-16341-54040","title":"Toyota Diesel OEM 2L 2L-T 2L-TE 3L 5L 82°C Thermostat METAL GASKET HiAce Hilux Surf Land Cruiser Prado 16341-54040","description":"\u003cp\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eGenuine OEM Toyota thermostat housing gasket 16341-54040, compatible with Hilux (LN55, LN56, LN65, LN85, LN86, LN106, LN107, LN111) and 4Runner\/Hilux Surf (LN60, LN61, LN130) models running early L, 2L, 2L-T, 2L-TE, and 3L diesel engines. \u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eThis gasket covers the early L\/2L\/2L-T\/2L-TE\/3L thermostat housing used through the 1995 model year. Later Hilux, 4Runner, and Land Cruiser Prado diesels built after 1995 use a different housing and gasket, so confirm your engine code and production date before ordering. \u003c\/strong\u003eCompatible with both manual and automatic transmission variants. This coated metal gasket seals the water outlet where the thermostat housing meets the cylinder head, and it is the exact companion gasket for Toyota thermostat 16340-54040. A worn or hardened water outlet gasket is one of the most common causes of a slow coolant weep on these diesel trucks, and it is cheap insurance to replace every time the thermostat housing is opened. This OEM part is a perfect replacement, offering Toyota-quality performance and long-lasting durability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOEM Part Number(s):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"padding-left: 1.5em; margin: 0;\"\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003e16341-54040 (current)\u003c\/li\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003e16341-54030 (superseded \/ substitute)\u003c\/li\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003e16341-54011 (superseded \/ substitute)\u003c\/li\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003e16341-54010 (previous, early production)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"padding-left: 1.5em; margin: 0;\"\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003e\n\u003cstrong\u003ePerfect Fit:\u003c\/strong\u003e Engineered specifically for Toyota Hilux and 4Runner\/Hilux Surf diesel models with early L, 2L, 2L-T, 2L-TE, and 3L engines\u003c\/li\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003e\n\u003cstrong\u003eQuality Assurance:\u003c\/strong\u003e Coated metal construction seals reliably against the machined surfaces of the water outlet and thermostat housing, unlike soft aftermarket paper gaskets that compress unevenly\u003c\/li\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003e\n\u003cstrong\u003eCooling System Integrity:\u003c\/strong\u003e Prevents coolant seepage at the thermostat housing, protecting against slow leaks that lead to low coolant and overheating\u003c\/li\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Beginner-friendly replacement that takes under an hour alongside a thermostat swap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Type:\u003c\/strong\u003e Thermostat housing\/water outlet gasket\u003cbr\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003e Coated metal (steel core with sealant coating)\u003cbr\u003e\u003cstrong\u003eEngine Compatibility:\u003c\/strong\u003e Early L, 2L, 2L-T, 2L-TE, 3L diesel engines\u003cbr\u003e\u003cstrong\u003eCompanion Thermostat:\u003c\/strong\u003e 16340-54040 (82°C\/180°F opening temperature)\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eToyota Model\u003c\/th\u003e\n\u003cth\u003eEngine Options\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1983-1995\u003c\/td\u003e\n\u003ctd\u003eHilux (LN55, LN56, LN65)\u003c\/td\u003e\n\u003ctd\u003eEarly L \/ 2L diesel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1992-1995\u003c\/td\u003e\n\u003ctd\u003eHilux (LN106)\u003c\/td\u003e\n\u003ctd\u003e3L diesel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1992-1994\u003c\/td\u003e\n\u003ctd\u003eHilux (LN107)\u003c\/td\u003e\n\u003ctd\u003e3L diesel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1983-1995\u003c\/td\u003e\n\u003ctd\u003eHilux (LN85, LN86, LN111)\u003c\/td\u003e\n\u003ctd\u003e2L diesel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1984-1995\u003c\/td\u003e\n\u003ctd\u003e4Runner \/ Hilux Surf (LN60, LN61)\u003c\/td\u003e\n\u003ctd\u003e2L, 2L-T diesel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1988-1995\u003c\/td\u003e\n\u003ctd\u003e4Runner \/ Hilux Surf (LN130)\u003c\/td\u003e\n\u003ctd\u003e2L-TE, 3L diesel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Verify part compatibility using your vehicle's VIN or engine code before purchase. \u003cstrong\u003eThis gasket covers the early L\/2L\/2L-T\/2L-TE\/3L thermostat housing used through the 1995 model year. \u003c\/strong\u003eLater Hilux, 4Runner, and Land Cruiser Prado diesels built after 1995 use a different housing and gasket, so confirm your engine code and production date before ordering. Compatible with both manual and automatic transmission variants.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Maintenance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Difficulty:\u003c\/strong\u003e Beginner\u003cbr\u003e\u003cstrong\u003eEstimated Install Time:\u003c\/strong\u003e 0.5-1 hour\u003cbr\u003e\u003cstrong\u003eTools Required:\u003c\/strong\u003e Basic socket set, gasket scraper, torque wrench, coolant drain pan\u003cbr\u003e\u003cstrong\u003eProfessional Installation:\u003c\/strong\u003e Not required for most DIY mechanics, though flagged as intermediate if the housing bolts are seized or the mating surface needs cleanup\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaintenance Tips:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"padding-left: 1.5em; margin: 0;\"\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003eAlways replace this gasket when the thermostat housing is removed, even if the old gasket looks intact\u003c\/li\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003eClean both mating surfaces completely of old gasket material and sealant residue before installing the new gasket\u003c\/li\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003eTorque housing bolts evenly in a criss-cross pattern to Toyota specification to avoid warping the housing\u003c\/li\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003eBleed the cooling system fully after reassembly and recheck coolant level once the engine has cycled through a full heat cycle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-indent: -1.5em;padding-left: 1.5em;\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What's included in the package?\u003c\/strong\u003e\u003cbr\u003eA: This listing includes one genuine Toyota OEM coated metal thermostat housing gasket, part number 16341-54040. The thermostat, housing bolts, and coolant are sold separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How difficult is installation?\u003c\/strong\u003e\u003cbr\u003eA: Replacing this gasket is a beginner-level job that typically takes under an hour when done alongside a thermostat replacement. It requires draining a small amount of coolant, removing the housing bolts, cleaning both mating surfaces, and reinstalling with the new gasket and correct torque.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is my thermostat housing leaking even though I already replaced the gasket?\u003c\/strong\u003e\u003cbr\u003eA: A repeat leak after a gasket replacement is usually caused by an uneven or warped mating surface, bolts that were not torqued evenly in sequence, or old gasket material left on the housing before the new gasket was installed. T\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this gasket fit my Land Cruiser Prado or later model Hilux?\u003c\/strong\u003e\u003cbr\u003eA: No. This gasket is designed for the early L, 2L, 2L-T, 2L-TE, and 3L thermostat housing used on Hilux and 4Runner\/Hilux Surf models through the 1995 model year. Later diesel models use a different housing design and a different gasket part number, so confirm your engine code before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse my old gasket instead of buying a new one?\u003c\/strong\u003e\u003cbr\u003eA: Reusing a thermostat housing gasket is not recommended. The coated metal surface conforms to the housing during the first installation and rarely reseals properly once disturbed, which is why most coolant leaks at this location trace back to a reused gasket.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Symptoms of Thermostat Housing Gasket Failure\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"padding-left: 1.5em; margin: 0;\"\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003eCoolant seepage or a slow drip visible around the thermostat housing bolts\u003c\/li\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003eA sweet smell of coolant in the engine bay after driving\u003c\/li\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003eLow coolant level in the reservoir that keeps returning after topping off\u003c\/li\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003eWhite or crusty mineral deposits forming on and around the housing surface\u003c\/li\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003eEngine temperature gauge creeping higher than normal, especially in traffic or on grades\u003c\/li\u003e\n\u003cli style=\"text-indent: -1.5em; padding-left: 1.5em;\"\u003eCoolant loss visible immediately after refilling the system, even before the engine has run\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"nwt-llc","offers":[{"title":"Default Title","offer_id":43554373074992,"sku":"580050-1000","price":7.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0629\/3199\/2624\/files\/580050-1000.png?v=1788309350","url":"https:\/\/northwesttoysllc.com\/products\/toyota-diesel-oem-2l-2l-t-2l-te-3l-5l-82-c-thermostat-metal-gasket-hiace-hilux-surf-land-cruiser-prado-16341-54040","provider":"North West Toys","version":"1.0","type":"link"}