Vibrant Heat Sink O2 Sensor Stainless Steel Weld Bung - 10419 1600 Series 3000501 is a performance street

3000501 is a performance street disc and the most popular disc purchased

which is very inconsistent

5-ply Silicone Couplers – Custom molded and reinforced to last through demanding environments

Looking for an effective solution to eliminate inconsistent power delivery from your 2015+ STI

4240010 is a 4-pad rigid race disc made with high quality

Vibrant Heat Sink O2 Sensor Stainless Steel Weld Bung - 10419 1600 Series 3000501 is a performance streetThread Pitch: M18 x 1. 5 Vibrants new Heat Sink O2 Sensor Bung is designed to prevent premature oxygen sensor failure. The finned surface has been optimized to improve convective cooling, delivering up to 30% cooler O2 Sensor temperatures vs. a standard bung and the coped design makes welding easier.