BMC Twin Air Conical Air Filter, Connection 150mm, Length 160mm INTERIOR 9000 (86 98) SAAB Part# 13306867 Reference 078121058AM Important information SAAB Part# 13306867 Inner diameter 1 (mm): 89 mm Inner diameter 2 (mm): 114 mm Inner diameter 1 (inch): 3 1 2 inch Inner diameter 2 (inch): 4 1 2 inch Length: 100 mm Color: Blue Wall thickness: 6 mm Temperature range: 40 to +180 degreeC Outer diameter 1: 101 mm Outer diameter 2: 126 mm Reinforcement: 5 layers Material: High quality silicone rubber polyester fabric We have a large selection of aluminum pipes and silicone hoses to accomplish this Use as few tight bends as possible to reduce restrictions and to create a uniform air flow to your intake manifold or turbo inlet