{"product_id":"metelli-pa1178-engine-water-pump","title":"Metelli PA1178 Engine Water Pump","description":"\u003ch2\u003eMetelli PA1178 Engine Water Pump\u003c\/h2\u003e\u003cp\u003eThe Metelli PA1178 engine water pump is a new replacement part for select BMW diesel applications, including the X5, 535d, 535d xDrive, and 740Ld xDrive. Built with an aluminium housing, cast iron impeller, and integrated pulley, it is specified for direct cooling-system service where OE-style fitment matters.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eNew engine water pump assembly\u003c\/li\u003e\n\u003cli\u003eIncludes pulley with 6 grooves\u003c\/li\u003e\n\u003cli\u003eGasket included in the package\u003c\/li\u003e\n\u003cli\u003eAluminium housing for the pump body\u003c\/li\u003e\n\u003cli\u003eCast iron impeller with 6 vanes\u003c\/li\u003e\n\u003cli\u003eBall\/Ball bearing design\u003c\/li\u003e\n\u003cli\u003eImpeller outside diameter: 60.5 mm\u003c\/li\u003e\n\u003cli\u003eBearing outside diameter: 30 mm\u003c\/li\u003e\n\u003cli\u003ePulley width: 22.3 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eMetelli PA1178 is an engine water pump built for cooling-system replacement on BMW diesel models that require part number PA1178 or OE cross-reference 11 51 8 516 205. The pump uses a cast iron impeller, aluminium housing, and ball\/bal bearing construction to match the demands of engine coolant circulation service. With the pulley included and a 6-groove design, this unit is specified for applications where the accessory drive layout must remain consistent with the original setup. This part cross-references OE number 11 51 8 516 205 for the same application.\u003c\/p\u003e\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 2014-2018 BMW X5, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2014-2016 BMW 535d, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2014-2016 BMW 535d xDrive, N\/A\u003c\/li\u003e\n\u003cli\u003eFits 2015 BMW 740Ld xDrive, N\/A\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Replacement Reasons\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCoolant circulation loss from a worn pump\u003c\/li\u003e\n\u003cli\u003eNoise from bearing wear in the water pump assembly\u003c\/li\u003e\n\u003cli\u003eCoolant leakage at the pump sealing surface\u003c\/li\u003e\n\u003cli\u003eDrive pulley wear or mismatch during cooling-system repair\u003c\/li\u003e\n\u003cli\u003eOverheating caused by reduced coolant flow\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eConfirm OE number 11 51 8 516 205 and verify pulley groove count, pulley width, and mounting configuration before installation. Replace the gasket supplied with the pump and inspect the belt drive, hoses, thermostat, and coolant condition during service. Proper cooling-system bleeding is important after installation on BMW X5, 535d, 535d xDrive, and 740Ld xDrive applications.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eMetelli supplies new cooling-system components built to OE-style specifications for direct replacement use. The PA1178 is a new part and includes the gasket listed in the package contents.\u003c\/p\u003e","brand":"Metelli","offers":[{"title":"Default Title","offer_id":52413562749109,"sku":"CMJM-PA1178","price":86.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/GF_PA1178_Fro.jpg?v=1777796487","url":"https:\/\/www.partcatalog.com\/products\/metelli-pa1178-engine-water-pump","provider":"PartCatalog","version":"1.0","type":"link"}