Silicone breather hose. Due to constant contact with oil, this oil breather hose often deteriorates and collapses preventing proper crankcase ventilation, or it tears and causes rough running and leaks or spits oil on the top of the block. Now available in longer-lasting silicone. Some models have the hose broken into two pieces with a connector in the middle. In this case, simply cut the hose with a razor blade and replace both sections. Two clamps are included. If you need two more for vans with the split hose, please use the SS Liner Clamp #10 here. 

Ref ID: N90072501SIL