O ring set for engine cooling system quick connect hoses For BMW e60N E61 535i 535i Xdrive N54 engine AUTOMATIC Or MANUAL The O rings for the quick connect hoses are not carried by dealers. In most leaking situations the hoses are perfectly fine, and the leak is caused by dry O rings, which can be replaced with this affordable set This set is made of NBR material (same material as the original ones) ////////// Fits BMW Below: 2010 BMW 535i Base Sedan 4-Door 3.0L Turbocharged 2010 BMW 535i Base Wagon 4-Door 3.0L Turbocharged 2010 BMW 535i Gran Turismo Hatchback 4-Door 3.0L Turbocharged 2010 BMW 535i xDrive Base Sedan 4-Door 3.0L Turbocharged 2010 BMW 535i xDrive Base Wagon 4-Door 3.0L Turbocharged 2009 BMW 535i Base Sedan 4-Door 3.0L Turbocharged 2009 BMW 535i Base Wagon 4-Door 3.0L Turbocharged 2009 BMW 535i xDrive Base Sedan 4-Door 3.0L Turbocharged 2009 BMW 535i xDrive Base Wagon 4-Door 3.0L Turbocharged 2008 BMW 535i Base Sedan 4-Door 3.0L Turbocharged