Fabspeed Universal 45° O2 Spacers with Catalytic Converters

The Fabspeed Universal 45 Degree O2 Spacers with Catalytic Converters - Pair are universal O2 sensor spacers designed for applications using downstream oxygen sensors. The pair is supplied with integrated catalytic converters to help alter the sensor's exposure to exhaust flow.

Each spacer features a 45-degree configuration and a male M18 x 1.5 thread designed to fit existing O2 sensor bungs. The built-in catalytic converter provides additional exhaust-gas treatment within the spacer while positioning the downstream O2 sensor farther from the direct exhaust stream.

The spacers are designed to help bring downstream O2 sensor readings closer to the ECU's expected operating range, particularly in applications where aftermarket exhaust components can alter exhaust-gas characteristics.

The spacer body measures approximately 3 3/4 inches long × 1 1/2 inches wide × 1 1/2 inches high, while the fitting section measures approximately 1 × 1 × 1 inch, excluding the threaded portion.

The adjustable two-piece design provides approximately 1 inch of thread depth for adjustment and installation flexibility. The universal configuration is intended to fit most makes and models using compatible M18 x 1.5 downstream O2 bungs.

Fabspeed specifies that these spacers are for downstream oxygen sensors only and are intended for off-road competition use only, not public roads or highways. The manufacturer also states that installation does not guarantee that a Check Engine Light will be prevented.