{"product_id":"hella-003259121-engine-oil-pressure-switch","title":"Hella 003259121 Engine Oil Pressure Switch","description":"\u003ch2\u003eEngine Oil Pressure Switch for BMW\u003c\/h2\u003e\u003cp\u003eThis Hella engine oil pressure switch is a Genuine OE from HELLA replacement for BMW applications that require a 12V, 1-pin, normally closed contact design. Part number 003259121 is built around the specified switch pressure range and thread size for direct-fit service on listed BMW models.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGenuine OE from HELLA product line for engine electrical service\u003c\/li\u003e\n\u003cli\u003eEngine oil pressure switch with normally closed contact function\u003c\/li\u003e\n\u003cli\u003e12V rated, 0.25A current strength, 1 connector\u003c\/li\u003e\n\u003cli\u003eSwitch pressure range: 0.2 to 0.5 bar with 10% tolerance\u003c\/li\u003e\n\u003cli\u003eM12x1.5 thread size and 24 mm spanner size\u003c\/li\u003e\n\u003cli\u003eBlack housing finish matches the original part color\u003c\/li\u003e\n\u003cli\u003ePart number 003259121 for BMW oil pressure switch replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eHella 003259121 is an engine oil pressure switch used to monitor oil pressure in BMW engines and trigger the appropriate warning or circuit response when pressure drops below the specified threshold. The normally closed contact design, 12V rating, and single-pin connector make it a direct OE-style service part for the listed BMW 325e, 325es, 325i, 325is, 528e, 535i, 535is, 635CSi, and 735i applications. This part cross-references Bosch (e.g., 0 344 101 040) for the same application.\u003c\/p\u003e\u003cp\u003eGenuine OE from HELLA means the part follows the original equipment style and key specifications expected for factory-level replacement. The M12x1.5 thread, 24 mm hex size, and 50 Nm tightening torque specification support correct installation on the intended engine oil pressure port. If you are searching for a BMW engine oil pressure switch 12V 1-pin normally closed contact, Hella 003259121 is the catalog reference to use.\u003c\/p\u003e\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 1985-1988 BMW 535i, N\/A — 12V - 1-Pin Connector - Normally Closed Contact; Genuine OE from HELLA\u003c\/li\u003e\n\u003cli\u003eFits 1988 BMW 535is, N\/A — 12V - 1-Pin Connector - Normally Closed Contact; Genuine OE from HELLA\u003c\/li\u003e\n\u003cli\u003eFits 1987 BMW 325e, N\/A — To 12\/86; Genuine OE from HELLA\u003c\/li\u003e\n\u003cli\u003eFits 1987 BMW 325es, N\/A — To 12\/86; Genuine OE from HELLA\u003c\/li\u003e\n\u003cli\u003eFits 1987 BMW 325i, N\/A — To 12\/86; Genuine OE from HELLA\u003c\/li\u003e\n\u003cli\u003eFits 1987 BMW 325is, N\/A — To 12\/86; Genuine OE from HELLA\u003c\/li\u003e\n\u003cli\u003eFits 1985-1987 BMW 528e, N\/A — 12V - 1-Pin Connector - Normally Closed Contact; Genuine OE from HELLA\u003c\/li\u003e\n\u003cli\u003eFits 1985-1987 BMW 635CSi, N\/A — 12V - 1-Pin Connector - Normally Closed Contact; Genuine OE from HELLA\u003c\/li\u003e\n\u003cli\u003eFits 1985-1987 BMW 735i, N\/A — 12V - 1-Pin Connector - Normally Closed Contact; Genuine OE from HELLA\u003c\/li\u003e\n\u003cli\u003eFits 1985-1986 BMW 325e, N\/A — 12V - 1-Pin Connector - Normally Closed Contact; Genuine OE from HELLA\u003c\/li\u003e\n\u003cli\u003eFits 1986 BMW 325es, N\/A — 12V - 1-Pin Connector - Normally Closed Contact; Genuine OE from HELLA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOil pressure warning light staying on or triggering incorrectly\u003c\/li\u003e\n\u003cli\u003eFaulty oil pressure signal from a worn switch\u003c\/li\u003e\n\u003cli\u003eIntermittent gauge or warning circuit behavior at the engine block\u003c\/li\u003e\n\u003cli\u003eReplacement needs after connector or switch wear on BMW engines\u003c\/li\u003e\n\u003cli\u003eService for BMW oil pressure switch applications using the specified M12x1.5 thread\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the connector style, thread size, and pressure specification before installation. Use the listed tightening torque of 50 Nm and confirm the engine is cool and the oil system is depressurized before removing the old switch. For BMW 325e, 325es, 325i, and 325is applications, confirm the vehicle build date noted in fitment before ordering.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eHella Genuine OE from HELLA parts are built to match the original equipment specification for the listed application. Part number 003259121 is identified for BMW oil pressure switch service and is cataloged with the stated electrical and mechanical parameters for accurate replacement selection.\u003c\/p\u003e","brand":"Hella","offers":[{"title":"Default Title","offer_id":52415094390965,"sku":"BFDP-003259121","price":11.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/HL_003259121_Fro.jpg?v=1777798898","url":"https:\/\/www.partcatalog.com\/products\/hella-003259121-engine-oil-pressure-switch","provider":"PartCatalog","version":"1.0","type":"link"}