{"product":{"id":10167259955381,"title":"Mishimoto 89-93 Dodge 5.9L Cummins 87.5C High-Temperature Thermostat","body_html":"The 12-valve first-gen Cummins in your Ram is considered one of the best diesel engines ever produced, and for good reason. Fuel efficiency, torque, and simplicity are just a few characteristics that give the Cummins its stellar reputation. We're huge fans of the Cummins engine, which is why we’ve developed a high-temperature thermostat for the 1989-1993 5.9L 12v Cummins.  This Mishimoto thermostat activates at a higher temperature (189.5°F) compared to the factory thermostat (180°F). By raising the activation temperature, coolant flows through the system later, promoting quicker engine warmup. The Mishimoto high-temperature thermostat is ideal for vehicles in cold climates, where rapid warmup and quicker in-cabin heat is vital. This thermostat includes a high-quality replacement gasket and our signature Mishimoto Lifetime .\u003cbr\u003e\u003cbr\u003eThis Part Fits:\u003cp\u003e\u003c\/p\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003cth align=\"left\" width=\"100\"\u003eYear\u003c\/th\u003e\n\u003cth align=\"left\" width=\"125\"\u003eMake\u003c\/th\u003e\n\u003cth align=\"left\" width=\"150\"\u003eModel\u003c\/th\u003e\n\u003cth align=\"left\" width=\"80\"\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1989-1993\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eD250\u003c\/td\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1989-1993\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eD350\u003c\/td\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1989-1993\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eW250\u003c\/td\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1989-1993\u003c\/td\u003e\n\u003ctd\u003eDodge\u003c\/td\u003e\n\u003ctd\u003eW350\u003c\/td\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","vendor":"Mishimoto","product_type":"Thermostats","created_at":"2025-06-17T11:16:42-04:00","handle":"mishimoto-89-93-dodge-5-9l-cummins-87-5c-high-temperature-thermostat","updated_at":"2026-02-04T07:09:48-05:00","published_at":"2025-06-17T11:17:31-04:00","template_suffix":null,"published_scope":"web","tags":"1989-dodge-d250-esi2979249, 1989-dodge-d350-esi3495491, 1989-dodge-w250-esi8398256, 1989-dodge-w350-esi7730469, 1990-dodge-d250-esi1093885, 1990-dodge-d350-esi5130728, 1990-dodge-w250-esi1001267, 1990-dodge-w350-esi9213805, 1991-dodge-d250-esi8279890, 1991-dodge-d350-esi6301092, 1991-dodge-w250-esi7858980, 1991-dodge-w350-esi6813527, 1992-dodge-d250-esi6735204, 1992-dodge-d350-esi3161229, 1992-dodge-w250-esi9877342, 1992-dodge-w350-esi3656510, 1993-dodge-d250-esi6884392, 1993-dodge-d350-esi2622639, 1993-dodge-w250-esi4973013, 1993-dodge-w350-esi8259997, 50-100, CaseLotQuantity:1, ClearanceItem:N, Cooling\u003eThermostats, Core:N, CorePrice:0, EPA:N\/A, fits_1989-1993`Dodge`D250`Base~1989-1993`Dodge`D350`Base~1989-1993`Dodge`W250`Base~1989-1993`Dodge`W350`Base, LTL:N, mishimoto, MPN:MMTS-RAM-89H, Non-CARB:N, Prop65:Y, SpecialOrder:Y, thermostats, TURN14_ID:472979","variants":[{"id":51230910382261,"product_id":10167259955381,"title":"Default Title","price":"67.55","sku":"MISMMTS-RAM-89H","position":1,"compare_at_price":"71.00","fulfillment_service":"manual","inventory_management":"shopify","option1":"Default Title","option2":null,"option3":null,"created_at":"2025-06-17T11:16:43-04:00","updated_at":"2026-02-04T07:09:48-05:00","taxable":true,"barcode":"840197702246","grams":118,"image_id":null,"weight":0.26,"weight_unit":"lb","requires_shipping":true,"price_currency":"USD","compare_at_price_currency":"USD"}],"options":[{"id":12681027780789,"product_id":10167259955381,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":72486407372981,"product_id":10167259955381,"position":1,"created_at":"2025-06-17T11:16:42-04:00","updated_at":"2025-06-17T11:16:43-04:00","alt":"Photo - 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