{"product":{"id":10167259988149,"title":"Mishimoto 89-93 Dodge 5.9L Cummins 79C 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 low-temperature thermostat for the 1989-1993 5.9L 12v Cummins. This Mishimoto thermostat activates at a lower temperature (174.2°F) compared to the factory thermostat (180°F). By lowering the activation temperature, coolant flows through the radiator earlier, maintaining lower fluid temperatures. The Mishimoto low-temperature thermostat is ideal for vehicles in warmer climates, or for use in vehicles experiencing extreme driving\/towing conditions. 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":"2025-06-17T11:16:43-04:00","handle":"mishimoto-89-93-dodge-5-9l-cummins-79c-high-temperature-thermostat","updated_at":"2026-01-08T02:15:19-05:00","published_at":"2025-06-17T11:17:32-04:00","template_suffix":null,"published_scope":"web","tags":"1989-dodge-d250-esi1837507, 1989-dodge-d350-esi4839970, 1989-dodge-w250-esi8201098, 1989-dodge-w350-esi3557707, 1990-dodge-d250-esi1560814, 1990-dodge-d350-esi5321305, 1990-dodge-w250-esi3490325, 1990-dodge-w350-esi4669925, 1991-dodge-d250-esi7620662, 1991-dodge-d350-esi3034086, 1991-dodge-w250-esi3711666, 1991-dodge-w350-esi2807158, 1992-dodge-d250-esi8003204, 1992-dodge-d350-esi1203749, 1992-dodge-w250-esi2421144, 1992-dodge-w350-esi1983691, 1993-dodge-d250-esi3755482, 1993-dodge-d350-esi2574397, 1993-dodge-w250-esi8447705, 1993-dodge-w350-esi8193149, 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-89L, Non-CARB:N, Prop65:Y, SpecialOrder:Y, thermostats, TURN14_ID:472981","variants":[{"id":51230910447797,"product_id":10167259988149,"title":"Default Title","price":"67.55","sku":"MISMMTS-RAM-89L","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":"2026-01-08T02:15:19-05:00","taxable":true,"barcode":"840197702239","grams":132,"image_id":null,"weight":0.29,"weight_unit":"lb","requires_shipping":true,"price_currency":"USD","compare_at_price_currency":"USD"}],"options":[{"id":12681027813557,"product_id":10167259988149,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":72486407667893,"product_id":10167259988149,"position":1,"created_at":"2025-06-17T11:16:43-04:00","updated_at":"2025-06-17T11:16:44-04:00","alt":"Photo - 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