Feature: These spacers contain a small stainless filter that eliminates CEL's for catalyst below efficiency. Will work on any model with a standard O2 sensor. Universal fit for all M18X1.50 speci Vehicle. Fine workmanship. Easy to use. Specification: Material Finish: Stainless Steel, Color: Silver, Size: x 1.5 Thread, Length: approx.46.7mm*22mm/1.8*0.9in. Package Included: 2pcs *Oxygen Sensor Spacer/1pcs with Three-way catalytic converter. Note: Please allow 1-5mm size errors due to manual measurement.