{"product_id":"40-974-graded-sensor-air-temperature-fit-for-thermo-king-crr20-crr40-40-871","title":"40-974 Graded Sensor Air Temperature Fit for Thermo King CRR20 CRR40 40-871","description":"\u003ch2\u003e40-974 Graded Sensor Air Temperature for Thermo King\u003c\/h2\u003e\u003cp\u003eThe 40-974 Graded Sensor Air Temperature is a replacement thermistor sensor for Thermo King CRR20 and CRR40 refrigeration units, measuring air temperature to maintain precise cargo environments.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis 40-974 graded sensor air temperature monitors the air temperature in Thermo King CRR20 and CRR40 systems. The 40-974 graded sensor air temperature feeds readings to the control board, helping the unit respond to temperature changes. It is a suitable service replacement for the original 40-871 sensor in compatible units.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eGraded resistor curve provides accurate temperature sensing for Thermo King CRR20 and CRR40\u003c\/li\u003e\n\u003cli\u003eDirect replacement for sensor part 40-871 in applicable systems\u003c\/li\u003e\n\u003cli\u003eBuilt with sealed housing to resist moisture and vibration in mobile refrigeration\u003c\/li\u003e\n\u003cli\u003eSimple two-wire connection for quick field installation\u003c\/li\u003e\n\u003cli\u003eTested for stable output across the expected temperature range\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Thermo King CRR20\u003c\/li\u003e\n\u003cli\u003efor Thermo King CRR40\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eUsed in truck and trailer refrigeration to detect return air temperature\u003c\/li\u003e\n\u003cli\u003eReplaces worn or inaccurate 40-871 sensors in Thermo King units\u003c\/li\u003e\n\u003cli\u003eSupports preventive maintenance programs for reefer fleets\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\u003e40-974 (replaces 40-871)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAir Temperature Graded Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Brands\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThermo King\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 Is the 40-974 sensor an exact swap for the 40-871? \u003cstrong\u003eA:\u003c\/strong\u003e The 40-974 is specified as a replacement for the 40-871, but verify your unit model and serial number because Thermo King made changes across production years.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Can I install this sensor without special tools? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, typical installation requires basic hand tools and disconnecting the old wiring connector, then connecting the new sensor and securing it in the original location.\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":46611853967546,"sku":"ZZ3F05208","price":59.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/2476\/1786\/files\/s-l1600_5d3352ae-0b46-468d-906f-78ab4e5d425d.jpg?v=1789011359","url":"https:\/\/partoutfitters.com\/products\/40-974-graded-sensor-air-temperature-fit-for-thermo-king-crr20-crr40-40-871","provider":"Part Outfitters","version":"1.0","type":"link"}