Oxygen / Lambda Sensor Bung - M18 x 1.5 mm - Weld In

Background
This precision-manufactured oxygen / lambda sensor bung features an M18 x 1.5 mm thread size (18 mm diameter with a 1.5 mm pitch). Made from stainless steel and sourced from an original equipment manufacturer (OEM) in Germany, it delivers excellent corrosion resistance, high-temperature durability, and a secure, leak-free seal in demanding engine and exhaust environments. Unlike lower-quality mild steel bungs that can seize, corrode, or distort under repeated heat cycles, this bung maintains precise thread integrity and reliable sealing, even in high-performance and motorsport applications.

Usage
Since the M18 x 1.5 thread size is standard for Bosch, NTK / NGK oxygen sensors, this bung is ideal for custom exhaust fabrication, race exhaust systems, or standalone engine management installations (Motec, VEMS, Syvecs, etc.) that require additional oxygen sensors for tuning and control. It can be welded into downpipes, headers, or mid-sections to support wideband O2 sensors during dyno tuning. Its robust stainless-steel construction ensures it will not warp, corrode, or compromise sealing over time, making it a long-term solution for both street and track use.

Fitment & Quantity
Sold individually

About FVD Brombacher
Since 1984, FVD Brombacher has sourced and manufactured Porsche parts from the highest-quality OEM suppliers, niche German manufacturers, and respected tuning specialists. With our shop and distribution center in Germany, we are uniquely positioned to deliver parts globally—directly from their origin. Driven by passion for all things Porsche, our mission is twofold: to preserve these iconic cars so they remain on the road for generations, and to push their performance further for those who demand more speed, precision, and excitement.

Important Note
The information above is provided for general reference only; please check your specific oxygen sensor size and thread pitch requirements. This bung requires professional welding for correct installation and sealing—improper fitment can lead to exhaust leaks or sensor errors.