An in-house developed hose kit from do88 that replaces the OEM hoses to the solenoid valve and the valve cover! These hoses are made exclusively from high-quality silicone for the best durability and finish. With three to five layers of reinforcement, depending on the hose's inner diameter, the hoses withstand high pressures and temperatures over a long period. The original is made of rubber, which not infrequently cracks as it dries out. This is the solution to that, and it noticeably improves the appearance as well! There is no difference in performance between the different colours. All original part numbers are given only as reference numbers.