
CNC Custom Precision Turning Stainless Steel Exhaust Back Pressure Weld Bung for Tuning. Seamlessly combines a weldable base with a precision compression tube nut, allowing easy, leak-free connection of hard pressure lines. Precision-machined from high-grade, heat-resistant 304 or 316 stainless steel to withstand extreme exhaust gas temperatures and prevent rust. Manufactured via advanced CNC turning and milling to guarantee flawless thread engagement and a perfectly concentric internal bore. The precision-engineered internal taper and ferrule seat ensure a gas-tight seal even under severe automotive engine backpressure. Fully support customized manufacturing for specific tube ODs (e.g., 1/8", 1/4", 6mm) and custom weld-base heights based on your drawings. Designed with robust hex flats for secure wrench tightening, resisting loosening caused by severe motorsport exhaust vibrations. Benefit from direct manufacturing, offering highly competitive wholesale pricing, flexible MOQs for custom projects, and punctual delivery.