O2 Sensor Adaptor M18 x 1.5 to M12 x 1.25 SUBFRAME BUSHES boost engine functions

boost engine functions

200SX/Silvia S15 with SR20 (5 speed only)

4 x 38mm (1 1/2") reducers

15% and 35%

- 2 x push on fittings 10mm/12mm OD barb

O2 Sensor Adaptor M18 x 1.5 to M12 x 1.25 SUBFRAME BUSHES boost engine functionsMade of stainless steel Standard version (short) Metric M18x1. 5 mm, M12x1. 25 mm Washer included These 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 an M18x1. 5