Description
The FAST Oxygen Sensor Shop Test Adapter is a professional-grade diagnostic tool designed to simplify oxygen sensor installation for temporary testing, tuning, and troubleshooting. Instead of welding a permanent bung into the exhaust system, this adapter allows you to install a wideband or narrowband oxygen sensor directly into the vehicle’s tailpipe. This makes it the perfect solution for dyno operators, tuners, and technicians who require fast and accurate air-fuel ratio (AFR) measurements across multiple vehicles.
Crafted from high-quality stainless steel, this adapter is built to withstand extreme exhaust gas temperatures and resist corrosion for long-term reliability in professional shop environments. The extended 12-inch length positions the O2 sensor deeper into the exhaust stream, away from ambient air at the tailpipe exit, ensuring accurate AFR readings without false lean conditions.
The adapter is designed to fit most vehicles with tailpipes of approximately 1.625 inches (1-5/8”) in diameter or larger. It features a standard M18 x 1.5 oxygen sensor port, compatible with most common wideband and narrowband sensors, including aftermarket AFR monitoring kits.
Whether you’re tuning a street car on the dyno, diagnosing a customer’s check-engine light, or verifying AFR on a custom build, this shop test adapter provides a quick, no-weld, no-hassle solution.
Features:
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Universal Tailpipe Fitment – Designed to slip into most vehicle exhaust tailpipes with a diameter of 1.625″ or larger.
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Extended Length (12″) – Positions the oxygen sensor deep into the exhaust flow for precise AFR readings.
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Heavy-Duty Stainless Steel Construction – Withstands high heat and resists corrosion for professional use.
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Standard O2 Sensor Bung – Equipped with an M18 x 1.5 threaded port, compatible with most wideband and narrowband oxygen sensors.
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No Welding Required – Installs in seconds without modifying the exhaust system.
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Ideal for Shops and Tuners – Perfect for dyno tuning, diagnostic testing, and temporary AFR monitoring.
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Portable and Reusable – Can be used across multiple vehicles, making it an essential tool for any performance workshop.
Specifications:
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Material: Stainless Steel
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Mounting Style: Tailpipe Insert Adapter
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Pipe Diameter (Insert): 1.625 in. (1-5/8”)
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Overall Length: 12.000 in.
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Sensor Port Thread: M18 x 1.5 (standard O2 sensor size)
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Applications: Temporary installation of oxygen sensors for tuning and diagnostics
Suitable For:
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Dyno tuning sessions where quick wideband AFR readings are required.
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Professional workshops needing to diagnose rich/lean conditions.
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Performance tuners working with multiple customer vehicles.
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Custom or older vehicles without existing oxygen sensor bungs.
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Wideband O2 kit users wanting a portable solution for multiple applications.
