Mini Catalytic Converter O2 Sensor Spacer
Brockett Built
$39.00
✓ In stock · Ships fast
33 available now. Ships within 1–2 business days.
- Made in the USA
- Lifetime warranty
Description
Fix Your Check Engine Light Without Replacing Your Catalytic Converter
Dealing with a P0420 or P0430 check engine light after installing headers or modifying your exhaust?
The Brockett Built Mini Catalytic Converter O2 Sensor Spacer is engineered to correct rear O2 sensor readings and eliminate nuisance CEL codes caused by low catalyst efficiency.
🔥 Key Benefits
- Fixes P0420 & P0430 CEL codes (catalyst efficiency below threshold)
- Improves fuel efficiency and engine performance
- Restores smooth idle and acceleration
- Helps pass emissions readiness (where applicable)
- Quick, bolt-on install — no tuning required
⚙️ How It Works
This mini catalytic converter O2 spacer installs on your downstream (rear) oxygen sensor, slightly isolating it from direct exhaust flow.
This allows the sensor to read properly even when:
- Running headers or catless setups
- Using high-flow catalytic converters
- Dealing with aging OEM cats
- Most vehicles with M18x1.5 O2 sensors
🚨 Supported Error Codes
P0420, P0421, P0422, P0423, P0424
P0430, P0431, P0432, P0433, P0434
🔧 Installation Instructions
- Install on rear O2 sensor ONLY
- Do NOT install on upstream sensor
- Thread into existing O2 bung, then install sensor into spacer
- Tighten snug — do not overtighten
⚠️ Important Notes
-
- You will need 2 spacers per exhaust system (one per bank)
- This product does not repair a physically failed catalytic converter
- Designed for modified/off-road vehicles
- O2 sensor must be functioning properly
Mini Catalytic Converter O2 Sensor Spacer
$39.00