Mishimoto's Weld-On Bungs are a precision-engineered components designed for the DIYer who want to securely integrate additional components onto various systems on any vehicle. Crafted from either high-quality aluminum, steel, or stainless-steel materials, our durable bung offers an M18x1.5 fitment and can be used for installing boost gauges, wideband O2 sensors, and other performance upgrades. Its robust construction and easy installation make it a reliable choice for enhancing your vehicle's performance. As with all our products we include our signature Lifetime Warranty.