4.5" to 4.0" 45° Silicone Reducer

Applications:
Joining your intake pipe to the throttle body assembly, air metering assembly, intercooler, BOV pipe, or turbo inlet/outlet.
Custom compressor, intercooler or inlet piping for turbo/supercharged car
Custom cold air intake for nonturbo car
Replacement of all factory rubber parts
These silicone parts can be used in trucks, recreational vehicles, boats, or anything else with an engine.