{"product_id":"walker-256-1129-engine-oil-pressure-switch","title":"Walker 256-1129 Engine Oil Pressure Switch","description":"\u003ch2\u003eEngine Oil Pressure Switch Overview\u003c\/h2\u003e\u003cp\u003eWalker 256-1129 is an OE replacement engine oil pressure switch built to monitor lubrication pressure and trigger the warning circuit when pressure drops below safe limits. It is a direct-fit service part for Ford Escape, Ford Fusion, Mercury Mariner, Mercury Milan, and Lincoln Zephyr applications listed below.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOE replacement design for factory-style oil pressure monitoring.\u003c\/li\u003e\n\u003cli\u003eMatches OE specifications for pressure threshold, thread size, terminal type, and electrical response.\u003c\/li\u003e\n\u003cli\u003eSteel construction with oil-resistant, high-temperature materials for engine bay exposure.\u003c\/li\u003e\n\u003cli\u003eSpade terminal with a single female connector for direct wiring connection.\u003c\/li\u003e\n\u003cli\u003eStandard replacement grade for routine service and drivability repairs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThis Walker oil pressure switch helps the ECU or dash warning circuit detect low oil pressure before lubrication-related damage develops. The part number 256-1129 is engineered to thread into the factory mounting location and connect to existing wiring without modification, making it a practical replacement when the original switch causes flickering oil lights, false warnings, or no signal during an actual pressure drop. It is a direct-fit option for 2008-2012 Ford Escape, 2006-2012 Ford Fusion, 2008-2011 Mercury Mariner, 2006-2011 Mercury Milan, and 2006 Lincoln Zephyr applications. This part cross-references Monroe Shocks \u0026amp; Struts (e.g., 172286, 182286) for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Problems This Part Can Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOil warning light flickering or staying on intermittently.\u003c\/li\u003e\n\u003cli\u003eFalse low-oil-pressure alerts from a worn switch.\u003c\/li\u003e\n\u003cli\u003eNo warning signal when oil pressure actually drops.\u003c\/li\u003e\n\u003cli\u003eElectrical connection issues at the factory oil pressure circuit.\u003c\/li\u003e\n\u003cli\u003eService replacement during engine repair or rebuild work.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstall the switch in the original threaded location and connect it to the existing harness using the factory-style spade terminal. Verify thread engagement, connector fit, and warning light operation after installation. Use the vehicle service procedure for torque and sealing requirements.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eWalker Products manufactures this switch to OE-style specifications for fit, pressure response, and electrical performance. The steel body and oil-resistant construction are selected for consistent operation in high-heat engine environments.\u003c\/p\u003e","brand":"Walker","offers":[{"title":"Default Title","offer_id":53599748292789,"sku":"DKHD-256-1129","price":37.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/O2_2561129_FRO.jpg?v=1792909040","url":"https:\/\/www.partcatalog.com\/products\/walker-256-1129-engine-oil-pressure-switch","provider":"PartCatalog","version":"1.0","type":"link"}