OEM Part Number: 11361705532, 11 36 1 705 532, 625-513
Replacement for BMW 3 Series Coupe (E46) 2003-2006 ; 7 series (E66) 2000-2008 ; X3 (E83) 2005-2006 ; X5 (E53) 2000-2006 ; Z4 Convertible (E85) 2002-2008 and more details below.
An engine oil hose transports oil to the oil cooler and then back to the engine. This allows oil to cool down through the oil cooler before being recirculated through the engine.
Common symptoms of a Bad or Failing Oil Return Hose: 1. The rubber on the hose is cracked; 2. Bulging spots in the hose; 3. Noticeable oil leaks; 4. Hose o-ring failure. If these problems occur in your car, you should replace Oil Supply Line Hose in time.
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There are a variety of things that can happen that will damage the oil return hose. The high heat of the engine is usually one of the main things that will lead to this hose becoming damaged. The hose can fail at crimp locations or the rubber portion can break down over time. Taking the time to inspect this hose on a regular basis will help you to spot any repair issues that are present early on, which will reduce the damage it does to the engine.