{"product_id":"uro-06b103221m-engine-crankcase-breather-hose","title":"URO 06B103221M Engine Crankcase Breather Hose","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThis URO engine crankcase breather hose is a direct replacement for the original hose used in the crankcase ventilation system. It restores breather function for proper hydrocarbon emission control and is built from AEM material to resist cracking from heat and oil vapor.\u003c\/p\u003e\u003cp\u003eFits 2004-2006 Audi A4, N\/A, from breather pipe to pressure regulator. Fits 2004-2005 Audi A4 Quattro, N\/A, from breather pipe to pressure regulator. Part number 06B103221M is the OE reference for this application, and 06B103221M is also the part number to verify when ordering.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDirect replacement crankcase breather hose for emission control service\u003c\/li\u003e\n\u003cli\u003eAEM construction resists splitting, cracking, and heat-related wear\u003c\/li\u003e\n\u003cli\u003eMolded hose profile for a precise replacement shape\u003c\/li\u003e\n\u003cli\u003eBlack finish with two hose connections\u003c\/li\u003e\n\u003cli\u003eFits the specified Audi A4 and Audi A4 Quattro applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThe 06B103221M crankcase breather hose is used in the crankcase ventilation system to route vapors correctly and maintain proper breather operation. When the original hose fails, emissions control and ventilation performance can be affected. This replacement follows the OE application for Audi A4 and Audi A4 Quattro models listed above, with molded construction and measured end diameters that match the original routing requirements.\u003c\/p\u003e\u003cp\u003eURO identifies this hose as a guaranteed-fit replacement, and the AEM material is selected for exposure to engine heat and oil vapor. This makes it a practical service part for restoring the crankcase ventilation path without changing the factory layout. For buyers searching for an Audi A4 crankcase breather hose or Audi A4 Quattro breather hose, part number 06B103221M provides the correct OE-style reference.\u003c\/p\u003e\u003cp\u003eThis part cross-references Genuine 06B103221M for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCracked or split breather hose material\u003c\/li\u003e\n\u003cli\u003eLoss of crankcase ventilation routing\u003c\/li\u003e\n\u003cli\u003eImproper hydrocarbon vapor control\u003c\/li\u003e\n\u003cli\u003eOil vapor-related hose deterioration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the hose routing from breather pipe to pressure regulator before installation. Compare the molded shape, end diameters, and overall length to the removed part to confirm the correct replacement. Use the OE part number 06B103221M to match the application on the listed Audi models.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eURO backs this hose with a 24 month unlimited mileage warranty.\u003c\/p\u003e","brand":"URO","offers":[{"title":"Default Title","offer_id":53333324398773,"sku":"DDWC-06B103221M","price":21.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/UR_06B103221M_Fro.jpg?v=1789709853","url":"https:\/\/www.partcatalog.com\/products\/uro-06b103221m-engine-crankcase-breather-hose","provider":"PartCatalog","version":"1.0","type":"link"}