The hoses are very tight even with oil, they are difficult to assemble. The PCV failed after three days and I found a rubber washer in the connector. The hose was the right size and length with the right bends. They are thin but strong. The o-ring is a size 32 too large and very difficult to install or remove. Audi PCV passed 135k and I put it back and it's still working fine. Has been replaced in the meantime.
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