Stainless Bros 604-00100-4000 Cast Saddle Type O2 Sensor Bung M18x1.5

The Stainless Bros 604-00100-4000 is a cast SS304 stainless steel saddle type O2 sensor bung with M18x1.5 threading, designed for professional exhaust system fabrication and oxygen sensor installation. This weld-in bung provides a robust mounting solution for both narrowband and wideband oxygen sensors in custom or aftermarket exhaust applications.

Key Features:

• Cast 304 stainless steel construction for superior durability and corrosion resistance
• Round saddle-type design distributes weld load across a larger surface area, reducing stress on exhaust tubing
• M18x1.5 metric thread fits most standard automotive oxygen sensors
• Cast construction provides thick walls and enhanced strength compared to stamped bungs
• Saddle base can be formed to fit various tube diameters and contours

The bung is welded into the exhaust and the O2 sensor screws into the bung allowing the sensor tip to be exposed to the exhaust gas. The saddle-type design simplifies installation by providing a stable welding surface that conforms to round exhaust tubing, making it ideal for custom fabricators and performance enthusiasts building or modifying exhaust systems.

The T304 stainless steel can withstand high exhaust temperature and is resistant to corrosion, ensuring long-lasting reliability in demanding automotive and motorsport applications.