M18 X 1.5 Thread
Built specifically for an M18 X 1.5 O2 sensor port, this plug provides a purpose-made option when a matching threaded closure is required. It’s suited to service and maintenance needs where correct thread sizing matters.
Yoshimura
The Yoshimura M18 X 1.5 O2 Sensor Stainless Steel Plug is a small replacement service part designed for situations where an M18 X 1.5 O2 sensor port needs to be plugged. Made from stainless steel, it’s a straightforward hardware solution for maintaining or servicing a system that uses this thread size.
This item is offered as part of Yoshimura’s Replacement Service Parts lineup, aimed at riders and builders who need individual components rather than a complete assembly. Refer to the specifications table on the page for key details.
Built specifically for an M18 X 1.5 O2 sensor port, this plug provides a purpose-made option when a matching threaded closure is required. It’s suited to service and maintenance needs where correct thread sizing matters.
Manufactured from stainless steel, this plug is a durable choice for hardware use on a motorcycle system. The material selection aligns with its role as a compact, functional service component.
Offered by Yoshimura under its Replacement Service Parts category, this plug is intended for riders looking for an individual, brand-matched small component. It’s a practical pick for keeping a setup complete when a plug is needed.

Installation
Small components can be the difference between a complete, buttoned-up system and a project stalled for one missing part. This Yoshimura O2 sensor plug is designed around the M18 X 1.5 thread size, making it a dedicated option for plugging an O2 sensor port that matches those threads. As a focused service part, it’s meant to cover a specific need without requiring the purchase of additional components.
Materials
With stainless steel specified for the material, this plug is built as a robust hardware item intended for routine service and maintenance applications. It fits within Yoshimura’s Replacement Service Parts offering, which supports sourcing individual small components as needed. Check the product photos and specifications shown on the page to confirm this part matches the intended use for a given setup.
| Part Number | M18X9PLG |
|---|---|
| Brand | Yoshimura |
| Product Line | Replacement Service Parts |
| Material | Stainless Steel |
| Shipping Weight | 1 lb |
