Category: Installation Guides & Technical Tips Target Keyword: O2 sensor spacer installation, 90 degree oxygen sensor bung, exhaust clearance solution. When it comes to fixing a P0420/P0430 efficiency code, one size—or rather, one shape—does not fit all.  we often see customers purchase a high-quality mini-catalytic spacer, only to realize during installation that there isn't enough…

Why Hollow O2 Spacers Usually Fail for P0420 — And the Science-Backed Fix If you’ve pulled a P0420 (“Catalyst System Efficiency Below Threshold”) code, you’re likely facing an expensive repair—OEM catalytic converters often cost over $1,000. While forums still suggest hollow spacers or “non-foulers,” these rarely work in modern vehicles (especially post‑2010). Here’s why, and…

As an essential component of the engine management system, oxygen sensors play a crucial role in monitoring and regulating the air-fuel ratio in the combustion process. However, the accuracy and effectiveness of oxygen sensors can be affected by various factors such as temperature, pressure, and vibration. That's whereo2 sensor spacer come in. In this article, we…