O2 Oxygen Sensor Spacer Adapter M18x1.5 Stainless Steel, 90° & 135° Angled Connector, Universal 3-Way Expansion, Catalytic Converter CEL Fix for Closed-Loop Systems

O2 Oxygen Sensor Spacer Adapter — M18×1.5 Stainless Steel

Eliminate false check engine lights caused by catalytic converter inefficiency. This stainless steel O2 sensor spacer adapter creates the necessary distance between the downstream oxygen sensor and exhaust gases, reducing erroneous CEL triggers on closed-loop frequency systems.

Key Features

• M18×1.5 Thread — Fits the most common downstream O2 sensor thread size
• Two Angle Options — 90° connector for standard fitment; 135° upgraded connector for tight exhaust clearances
• Universal 3-Way Expansion Design — Compatible with a wide range of oxygen sensor configurations
• Catalytic Aging Protection — Helps maintain sensor efficiency and reduce false fault codes
• Stainless Steel Construction — Heat and corrosion resistant for long-term exhaust system use
• Closed-Loop Compatible — Works with closed-loop frequency O2 sensor communication systems

Specifications

Ideal For

• Fixing P0420 / P0430 catalytic converter efficiency codes
• Downstream O2 sensor relocation on aftermarket exhausts
• Vehicles with aging catalytic converters triggering false CEL
• Mechanics and DIY enthusiasts performing exhaust system repairs