O2 90° Sensor Spacer Engine Light CEL Check Bung Mini Catalytic Converter Solid
O2 90° Sensor Spacer Engine Light CEL Check Bung Mini Catalytic Converter Solid is a $20.88 iron exhaust adapter with M18x1.5 threading. It helps prevent check engine lights after catalytic converter removal by spacing the rear O2 sensor and includes a mini catalytic element to reduce emissions and address P0420 codes.
● In stock
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Key features
- Integrated mini catalytic converter element
- M18x1.5 standard O2 sensor thread size
- 90-degree angled bung for tight spaces
- Made from durable iron for heat resistance
- Helps reduce P0420 check engine codes
- Spaces rear O2 sensor from exhaust flow
- Compact design fits modified exhausts
Pros
- +Affordable at $20.88
- +Includes catalytic element for better results
- +Easy to install with basic tools
- +Works with high-flow catalytic converters
- +Helps manage CEL in some modified vehicles
Cons
- −No guarantee of CEL elimination
- −Not legal for street use in all areas
- −May not work on modern ECU systems
- −Iron material may corrode over time
About O2 90° Sensor Spacer Engine Light CEL Check Bung Mini Catalytic Converter Solid
What is O2 90° Sensor Spacer Engine Light CEL Check Bung Mini Catalytic Converter Solid?
The O2 90° Sensor Spacer Engine Light CEL Check Bung Mini Catalytic Converter Solid is a precision-machined exhaust adapter designed to help manage check engine light (CEL) issues after modifying or removing a vehicle’s catalytic converter. Built with durable iron and featuring M18x1.5 threading, this spacer installs between the oxygen sensor and exhaust system, creating distance that alters sensor readings. It includes a miniature catalytic converter element to assist in reducing exhaust emissions and may help resolve P0420 'Catalyst Efficiency Below Threshold' trouble codes on some vehicles.
Key features
- Integrated Mini Catalyst — Contains a small catalytic element to help reduce emissions and support code mitigation.
- M18x1.5 Thread — Standard O2 sensor thread size for broad compatibility with cars and trucks.
- 90-Degree Design — Angled bung allows for easier installation in tight exhaust configurations.
- Iron Construction — Durable material built to withstand high exhaust temperatures.
- CEL Light Management — Helps reduce the likelihood of a check engine light after exhaust modifications.
- O2 Sensor Spacing — Positions rear oxygen sensor away from direct exhaust flow to simulate catalytic converter function.
- Compact Fit — Designed for use with high-flow cats or deleted systems without major exhaust changes.
Who is O2 90° Sensor Spacer Engine Light CEL Check Bung Mini Catalytic Converter Solid for?
This product suits DIY auto enthusiasts and performance tuners who have modified their exhaust systems and are experiencing P0420 codes or persistent check engine lights. It's ideal for those in regions without strict emissions testing or for off-road and track-only vehicles. It is not a guaranteed fix for all ECU systems, especially modern vehicles with advanced diagnostics.
How does O2 90° Sensor Spacer Engine Light CEL Check Bung Mini Catalytic Converter Solid compare?
Compared to simple O2 spacers without catalytic material, this unit offers added emission reduction through its internal mini converter. It outperforms basic flat washers or extension spacers that only alter sensor distance. However, it is less effective than a full catalytic converter or ECU reflash solutions, which address root causes rather than sensor feedback. It’s a cost-effective middle ground for temporary or non-compliant applications versus permanent OEM-style repairs.
Best use cases
- →After deleting catalytic converter
- →Installing high-flow catalytic converter
- →Preventing P0420 error code
- →Off-road or track-only vehicle setups
- →Temporary fix for emissions testing
Is O2 90° Sensor Spacer Engine Light CEL Check Bung Mini Catalytic Converter Solid right for you?
This spacer is best for DIY mechanics with modified exhausts experiencing a check engine light. No advanced skills needed—just basic wrench knowledge. It's ideal if you're avoiding a full ECU tune or replacement cat. Consider an ECU reflash or OEM-style catalytic converter for permanent, compliant solutions. Not recommended for daily drivers in strict emissions states.
How it compares: Compared to basic O2 spacers, this unit includes a catalytic element for better emission reduction. It’s more effective than simple washers but less reliable than ECU tuning or full catalytic replacements. A budget-friendly option for non-compliant or temporary setups.
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$7.91Frequently Asked Questions
What is the O2 90° Sensor Spacer used for?
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It helps prevent the check engine light after removing or modifying a catalytic converter by spacing the rear O2 sensor and including a mini catalyst to reduce emissions and address P0420 codes on some vehicles.
Does this eliminate the check engine light completely?
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No guarantee. It may help with P0420 codes on some vehicles, but modern ECUs use multiple inputs. Results vary based on vehicle make, model, and tuning.
How do you install the O2 sensor spacer?
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Unscrew the rear O2 sensor, place the spacer between the sensor and exhaust bung, then reinstall the sensor. Use thread-safe compound and basic hand tools.
Is this legal for street use?
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Removing or bypassing catalytic converters is illegal in many states and violates federal emissions laws. This product is intended for off-road, racing, or diagnostic use only.
Can this replace a full catalytic converter?
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No. It’s not a full replacement. It may help with sensor readings and minor emissions but lacks the efficiency and durability of a proper catalytic converter.
How much does O2 90° Sensor Spacer Engine Light CEL Check Bung Mini Catalytic Converter Solid cost?
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O2 90° Sensor Spacer Engine Light CEL Check Bung Mini Catalytic Converter Solid is $20.88 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.
Is O2 90° Sensor Spacer Engine Light CEL Check Bung Mini Catalytic Converter Solid in stock at Lab Work Auto?
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Yes, O2 90° Sensor Spacer Engine Light CEL Check Bung Mini Catalytic Converter Solid is currently in stock at Lab Work Auto.
Specifications
- SKU
- F7-8118