Mild Steel and Stainless Steel Heat Sink O2 Bungs are quickly becoming a GlowShift customer favorite for drivers looking to enhance wideband O2 sensor performance and durability. Designed to install seamlessly on both stock and custom exhaust systems, these heat sink bungs offer a smarter, more efficient alternative for air-fuel ratio tuning.

What sets these weld in O2 bungs apart is their grooved surface design, engineered to optimize heat dissipation. This advanced feature helps pull excessive heat away from the sensor, reducing thermal stress and significantly extending the lifespan of your wideband oxygen sender. The result? More consistent, accurate AFR readings for your car or truck over time and less worry about premature sensor failure.

Built from premium materials, each heat sink bung is 1” long with a 1” diameter and fits standard O2 sensors with M18 x 1.5mm threads. Whether you're upgrading a high-performance build or modifying a daily driver, these oxygen sensor weld in bungs sit flush on the exhaust and are ready for installation.

If you have any questions about installing our mild steel and stainless steel weld in O2 bungs, GlowShift not only delivers cutting-edge performance but also backs every purchase with a One Year Limited Warranty and Free Lifetime Tech Support.

We also have an extensive range of incredible Wideband Gauges to choose from for your next aftermarket project, including custom exhaust modifications.

As more tuners and builders adopt these advanced heat sink designs, GlowShift is leading the way with a Heat Sink O2 Bung that combines smart engineering and long-term reliability. Don’t settle for standard oxygen sensor weld in bungs when you can upgrade to our latest innovation and keep your O2 sensor cooler for longer.