{"product_id":"four-seasons-35901-hvac-pressure-switch","title":"Four Seasons 35901 HVAC Pressure Switch","description":"\u003ch2\u003eFour Seasons 35901 Trinary Pressure Switch\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Pressure Switch 35901 is a system-mounted trinary HVAC pressure switch built for 12-volt automotive air conditioning systems. It uses a 4-terminal, open connector design with a female 7\/16\" x 20 fitting and metal construction for direct replacement service.\u003c\/p\u003e\u003cp\u003eFour Seasons Pressure Switch line components are built for HVAC control applications where accurate pressure signaling is needed for compressor and fan operation. This trinary pressure switch meets or exceeds OEM requirements and is a practical choice for service work on vehicles such as Honda Civic and Toyota Corolla when the original pressure switch needs replacement.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number: 35901\u003c\/li\u003e\n\u003cli\u003eSystem-mounted trinary pressure switch for HVAC pressure control\u003c\/li\u003e\n\u003cli\u003e12-volt electrical design\u003c\/li\u003e\n\u003cli\u003e4-terminal open connector configuration\u003c\/li\u003e\n\u003cli\u003eFemale fitting with 7\/16\" x 20 thread size\u003c\/li\u003e\n\u003cli\u003eMetal housing construction\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds OEM requirements\u003c\/li\u003e\n\u003cli\u003eOpen compressor and fan switch states\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eFour Seasons 35901 is an HVAC pressure switch used to monitor refrigerant system pressure and relay the proper signal to the compressor and cooling fan circuits. The trinary design combines pressure-based control functions in one system-mounted component, helping maintain correct HVAC operation in vehicles that use this style of switch. Cross-reference part numbers include Bosch BC1005 and Gates 1560 for the same application.\u003c\/p\u003e\u003cp\u003eFor buyers searching by vehicle keywords, this part is commonly referenced in HVAC repair searches for Honda Civic and Toyota Corolla air conditioning pressure switch replacement. If your vehicle uses a system-mounted trinary pressure switch with a 7\/16\" x 20 female fitting, Four Seasons 35901 is the direct part number to verify.\u003c\/p\u003e\u003ch2\u003eCommon Problems This Part Addresses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCompressor cycling issues caused by a faulty pressure switch\u003c\/li\u003e\n\u003cli\u003eCooling fan control faults tied to HVAC pressure signaling\u003c\/li\u003e\n\u003cli\u003eAir conditioning system shutdown from incorrect pressure input\u003c\/li\u003e\n\u003cli\u003eIntermittent HVAC operation from worn electrical contacts\u003c\/li\u003e\n\u003cli\u003eReplacement needs after corrosion or connector damage\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the connector shape, terminal count, fitting thread size, and system-mounted location before installation. Confirm the vehicle uses a trinary pressure switch with a female 7\/16\" x 20 connection and 12-volt electrical system. Match the original HVAC switch style and compare the old unit to Four Seasons 35901 before final assembly.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eThis Four Seasons HVAC pressure switch meets or exceeds OEM requirements for replacement service. Part number 35901 is built as a direct-fit pressure switch for applications that use this trinary configuration.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":51967371739317,"sku":"BBRN-35901","price":66.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_35901_Fro.jpg?v=1775067942","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-35901-hvac-pressure-switch","provider":"PartCatalog","version":"1.0","type":"link"}