{"product_id":"78-1366-belt-engine-to-compressor-for-thermo-king-md-100-w-tk-3-74-engine-781366","title":"78-1366 Belt Engine to Compressor for Thermo King MD-100 w\/TK 3.74 Engine 781366","description":"\u003ch2\u003eBelt Engine to Compressor for Thermo King MD-100 w\/TK 3.74 Engine\u003c\/h2\u003e\u003cp\u003eThis engine-to-compressor belt, cross-referenced as 78-1366 and 781366, transfers power from the Thermo King MD-100's TK 3.74 engine to the compressor, ensuring reliable refrigeration system operation.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe 78-1366 belt engine to compressor is a direct replacement drive belt designed for the Thermo King MD-100 unit with the TK 3.74 engine. It maintains proper tension and alignment between the engine and compressor, keeping the cooling cycle running efficiently. This belt is essential for sustained performance in transport refrigeration applications.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-cut dimensions match the OEM 78-1366 belt profile for secure fitment\u003c\/li\u003e\n\u003cli\u003eReinforced rubber construction resists wear from continuous engine vibration\u003c\/li\u003e\n\u003cli\u003eHeat-tolerant compound maintains flexibility under high under-hood temperatures\u003c\/li\u003e\n\u003cli\u003eRibbed surface reduces slippage for dependable power transfer\u003c\/li\u003e\n\u003cli\u003eDirect replacement for original part number 781366 without modification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\u003cli\u003efor Thermo King MD-100 with TK 3.74 engine\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eUsed in over-the-road truck refrigeration units for perishable cargo hauling\u003c\/li\u003e\n\u003cli\u003eReplaces worn belts during routine preventive maintenance on reefer systems\u003c\/li\u003e\n\u003cli\u003eSupports continuous duty operation in temperature-controlled logistics fleets\u003c\/li\u003e\n\u003cli\u003eInstalled during compressor rebuilds or engine service intervals\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e78-1366, 781366\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBelt Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEngine to compressor drive belt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Unit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThermo King MD-100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Application\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTK 3.74\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e How do I know if this belt is the right length? \u003cstrong\u003eA:\u003c\/strong\u003e Verify your unit's serial number and engine model, since the MD-100 may use different belts across production years. The cross-reference 781366 matches the original part for most TK 3.74 configurations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What happens if the belt fails during operation? \u003cstrong\u003eA:\u003c\/strong\u003e The compressor stops receiving power, causing a loss of cooling and potentially damaging the engine pulley system. Inspect the belt for cracks or fraying at each service interval to avoid breakdowns.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Part Outfitters","offers":[{"title":"Default Title","offer_id":46610901631162,"sku":"ZZ3F08125","price":88.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/2476\/1786\/files\/s-l1600_0c179bc8-2f31-4fe1-a23e-f81e8f7238b7.jpg?v=1789003474","url":"https:\/\/partoutfitters.com\/products\/78-1366-belt-engine-to-compressor-for-thermo-king-md-100-w-tk-3-74-engine-781366","provider":"Part Outfitters","version":"1.0","type":"link"}