High quality 4 ply silicone coupler, black inside and out. 3.5" long

 

Ideal for big displacement engines with 108mm throttle bodies while mating 4" OD tube. Popular amoungst Chevrolet LS engines.

 

 

 

 

Reinforced silicone transition, 100mm-108mm ID 4"-4.25"

$23.99Price