2Pcs M18 x 1.5 O2 iron Car Oxygen Sensor Bung Extension Extender Spacer

What is 2Pcs M18 x 1.5 O2 iron Car Oxygen Sensor Bung Extension Extender Spacer?

The 2Pcs M18 x 1.5 O2 iron Car Oxygen Sensor Bung Extension Extender Spacer is a pair of durable steel adapters designed to reposition oxygen sensors in exhaust systems. With a standard M18 x 1.5 thread pitch and 38mm length, these spacers provide reliable extension for downstream O2 sensor installation. Made from iron, they offer heat resistance and structural integrity in high-temperature environments, making them suitable for performance tuning, exhaust modifications, or sensor relocation during engine swaps.

Key features

• Universal Fitment — Compatible with any vehicle using M18 x 1.5 threaded oxygen sensors.
• M18 x 1.5 Thread Pitch — Matches OEM and aftermarket O2 sensor threading for secure installation.
• 38mm Length — Provides optimal extension distance for accurate exhaust gas sampling.
• Durable Iron Construction — Withstands high exhaust heat and vibration without warping.
• 2-Piece Set — Includes two identical spacers for dual exhaust setups or redundancy.
• Direct Install — No modifications needed; threads cleanly into existing bungs or sensors.
• Corrosion-Resistant Finish — Surface treatment helps resist rust and scaling over time.

Who is 2Pcs M18 x 1.5 O2 iron Car Oxygen Sensor Bung Extension Extender Spacer for?

This product suits DIY mechanics, performance tuners, and automotive technicians working on exhaust system modifications. It's ideal for those relocating oxygen sensors due to header, mid-pipe, or catalytic converter changes. Enthusiasts performing engine swaps or custom exhaust builds will appreciate the precise spacing and reliable fit. It’s also useful for correcting sensor angle issues that can affect readings or cause interference.

How does 2Pcs M18 x 1.5 O2 iron Car Oxygen Sensor Bung Extension Extender Spacer compare?

Compared to aluminum spacers, these iron units offer superior heat tolerance and longevity under continuous exhaust exposure. Unlike welded bung kits, they provide a reversible, no-perm solution for sensor extension. While some plastic or composite extenders degrade quickly, these metal spacers maintain integrity. They’re more affordable than complete O2 sensor relocation bungs and easier to install than custom fabrication options, striking a balance between cost, durability, and function.