Collectors 4-1 2.5" Inlet 4.5" Outlet Primary Tube for Custom Exhaust Systems. Stainless steel construction. 4-1 design.
OBX Stainless Universal Fit 4-1 Merge Collector 2-3/8" ID Inlet 5.0" OD Outlet
OBX Stainless Universal Exhaust Merge Collector 1 5/8" Primary Tube 3.0" Outlet
OBX Stainless Exhaust Merge Collector 1-7/8" ID 3.5" Outlet No Flange 4-1
Vibrant Performance 10317 4-1 Stainless Steel Merge Collector
Quality 2-1 Stainless Exhaust Merge Collector 3" Dual Inlet to 3" Single Outlet
Vibrant For 2-1 Stainless Steel Merge Collector 10355 - High Performance
