Collection: O2 Sensor Spacers with Mini Catalytic Converter

These O2 sensor spacers come equipped with a built-in mini catalytic converter (cat insert) to help reduce or eliminate check engine light (CEL) codes like P0420 or P0430. Perfect for vehicles with high-flow exhaust systems or modified catalytic converters. Each adapter is threaded M18 x 1.5 and made from durable stainless steel for long-term performance. Off-road/racing use only. Includes free U.S. shipping.