Threaded Plug - M18 x 1.5 mm - Multiple Models - Multiple Uses (Oxygen Sensor / Drain Plug)

Background
This precision-manufactured threaded plug features an M18 x 1.5 mm thread size (18 mm major diameter with a 1.5 mm pitch). Made from A2 stainless steel and sourced from an original equipment manufacturer (OEM) in Germany, it offers excellent corrosion resistance, high-temperature durability, and a secure, leak-free seal in demanding engine and exhaust environments.

Usage
This plug has been used in multiple Porsche models over the years, including as an O2 sensor (lambda sensor) plug on the 924 S, 944 S2, 968, 986, 993, 996 GT3, and 997, and as an engine oil drain plug on the 2014–2019 GT3, GT3 RS, R, and Speedster. Since the M18 x 1.5 thread size is common for Bosch, NTK / NGK oxygen sensors, it can also be used in motorsport and custom race exhaust applications—either to seal an unused sensor bung or to block a secondary bung on OBD I Porsches where only a single sensor is needed.

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.