O2 Sensor Adaptor M18 x 1.5 to M12 x 1.25 SUBFRAME BUSHES This plenum would be an

This plenum would be an excellent upgrade for a RB20 engine

10AN Tee-piece coupler fitting

Only body length(with out tips):10

This unit is perfect for medium to fullsize cars and intermediate SUVs that see light to medium duty use and some towing

O2 Sensor Adaptor M18 x 1.5 to M12 x 1.25 SUBFRAME BUSHES This plenum would be anMade of stainless steelStandard version (short)Metric M18x1. 5 mm, M12x1. 25 mmThe block bung and washer includedThese O2 oxygen sender adapters with 22mm hex head size are made for those using the skinny 12mm O2 sensor on the 18mm bung on the downpipe or elbow. Package includes 18mm copper gasket for a perfect seal and anti seize lubrication for thread protection. It converts M18x1. 5 bung to M12x1. 25 bung. Allows M12x1. 25 O2 sensors to be used on