Description
The Mishimoto Weld-On Bung, part number MMEXH-WB18-MS, is a flat, mild-steel fitting machined to an M18x1.5 metric thread and built for the DIYer who needs to add a fabrication point to an existing system. It’s a purpose-built solution for welding a threaded port directly into piping, tubing, or housings so you can mount additional sensors or gauges exactly where you need them.
As part of Mishimoto’s Fabrication lineup, this weld-on bung gives fabricators, tuners, and DIY builders a reliable way to integrate extra components onto a vehicle’s systems without redesigning existing hardware. Its M18x1.5 thread is sized for installing boost gauges, wideband O2 sensors, and other performance upgrades, making it a practical addition to any home fabrication toolkit. The mild steel construction is meant to be robust and straightforward to weld into place, and like every product in the Mishimoto catalog, this bung is covered by the company’s signature Lifetime Warranty.
Vehicle Applications
Mishimoto designed this weld-on bung for universal fitment, meaning it isn’t tied to a specific make, model, or year. Instead, it’s built to be welded onto various systems on any vehicle, letting you add a sensor or gauge bung to whatever piping, housing, or fabrication project you’re working on.
Features
- Universal vehicle fitment — allows for additional components to be added onto various vehicle systems
- Available in high-quality aluminum, steel, or stainless-steel materials in an M18x1.5 size
- This version features durable mild steel construction with a flat profile
- DIY weld-on installation for straightforward fabrication work
- Backed by the Mishimoto Lifetime Warranty
- M18x1.5 metric threading suits boost gauges, wideband O2 sensors, and other performance add-ons
Specifications
- Brand: Mishimoto
- Part Number: MMEXH-WB18-MS
- Product Type: Fabrication
- Material: Mild Steel
- Type: Flat
- Thread Size: M18 – 1.5
- Thread Type Standard: Metric
- Includes: (1) Weld-On Bung, Mishimoto Lifetime Warranty
Frequently Asked Questions
What thread size does this Mishimoto weld-on bung use?
It uses an M18x1.5 metric thread.
What material is the MMEXH-WB18-MS bung made from?
This version is made from mild steel with a flat type profile.
What can this bung be used for?
It can be used for installing boost gauges, wideband O2 sensors, and other performance upgrades.
How is it installed?
It’s a DIY weld-on component designed to be welded onto various systems on a vehicle.
Does it fit a specific vehicle?
It offers universal vehicle fitment, allowing it to be added onto various vehicle systems rather than being limited to one specific make or model.
Does this bung come with a warranty?
Yes, it is backed by the Mishimoto Lifetime Warranty.
⚠ WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
