4.5" to 4.0" Silicone Reducer Color:BLUE Easy to tune as these

Easy to tune as these are the same injector that came with the ls3 only that they flow more for head and cam cars

1 x Oil drain gasket

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UPP is proud to offer an affordable secondary fuel system

The lower 2 opposing return ports are unique in that they flow parallel with the pressure ports eliminating the need for elbow fittings

4.5" to 4.0" Silicone Reducer Color:BLUE Easy to tune as theseJoining 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 Genuine 4 ply Silicone (5 silicone layers plus 4 reinforcement layers = 9 total layers!) Installer can cut silicone parts down to fit with a razor Heat tolerance: 40 to 392