{"product_id":"dayco-71439-radiator-coolant-hose-lower-pipe-to-radiator","title":"Dayco 71439 Radiator Coolant Hose - Lower - Pipe To Radiator","description":"\u003ch2\u003eOverview of Dayco Curved Radiator Hose 71439\u003c\/h2\u003e\u003cp\u003eThe Dayco Curved Radiator Hose 71439 is designed specifically for BMW 325i, 325is, and 325iX models. Engineered to meet SAE J20R4 Class D-1 and SAE J1684 Type EC specifications, this dual inside diameter hose ensures reliable coolant flow and durability under typical operating conditions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConstructed from durable EPDM material for heat and chemical resistance\u003c\/li\u003e\n\u003cli\u003eBlack color for standard OEM appearance\u003c\/li\u003e\n\u003cli\u003eDual inside diameters: 1 5\/16 inches on one end and 1 1\/2 inches on the other\u003c\/li\u003e\n\u003cli\u003eTrunk height of 4 1\/2 inches for precise fitment\u003c\/li\u003e\n\u003cli\u003eMeets SAE J20R4 Class D-1 and SAE J1684 Type EC standards\u003c\/li\u003e\n\u003cli\u003eDoes not include heat shield or protective sleeve\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dayco Curved Radiator Hose 71439 is manufactured from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals. This hose features a curved design with dual inside diameters, measuring 1 5\/16 inches on one end and 1 1\/2 inches on the other, allowing for a secure and precise connection within the cooling system of compatible BMW vehicles. The trunk height of 4 1\/2 inches ensures proper routing and fitment without interference. This hose complies with SAE J20R4 Class D-1 and SAE J1684 Type EC specifications, confirming its suitability for automotive coolant applications.\u003c\/p\u003e\u003ch2\u003eAbout the Curved Radiator Hose Product Line\u003c\/h2\u003e\u003cp\u003eThe Dayco Curved Radiator Hose line focuses on providing hoses with specific bends and dual inside diameters to accommodate complex cooling system layouts. This product line is designed to replace OEM hoses that require precise curvature and size transitions, ensuring proper coolant flow and system integrity. The 71439 part is a representative example tailored for select BMW models, maintaining factory specifications and performance.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement of worn or cracked radiator coolant hoses in BMW 325i, 325is, and 325iX\u003c\/li\u003e\n\u003cli\u003ePrevention of coolant leaks caused by hose degradation or improper fit\u003c\/li\u003e\n\u003cli\u003eRestoration of proper coolant flow to avoid engine overheating\u003c\/li\u003e\n\u003cli\u003eAddressing hose swelling or softening due to heat exposure\u003c\/li\u003e\n\u003cli\u003eEnsuring compatibility with OEM cooling system components\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Dayco Curved Radiator Hose 71439, ensure the hose is routed according to the vehicle manufacturer’s specifications to avoid kinks or interference with other engine components. Verify that the dual inside diameters match the corresponding radiator and engine fittings for a secure seal. Use appropriate clamps tightened to manufacturer torque specifications to prevent leaks. Inspect adjacent components for wear or damage during installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDayco manufactures the Curved Radiator Hose 71439 to meet stringent SAE standards, ensuring durability and performance in automotive cooling systems. The EPDM material provides resistance to heat and coolant chemicals, contributing to long service life. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls and testing protocols.\u003c\/p\u003e","brand":"Dayco","offers":[{"title":"Default Title","offer_id":51995874885813,"sku":"BCWL-71439","price":24.16,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DY_71439_Fro.jpg?v=1775164156","url":"https:\/\/www.partcatalog.com\/products\/dayco-71439-radiator-coolant-hose-lower-pipe-to-radiator","provider":"PartCatalog","version":"1.0","type":"link"}