Air Brake Compressor R23522122 R23522123 For Detroit Diesel Series60 12.7 TF-750. Part Name: Air Brake Compressor. 109425, 109426, 109430, 109429. 23522123, R23522122, 23522122, R23522123. For Freightliner 2004 and older 12.7 engine. Most common air compressor on Detroit Series 60 12.7 (PRE EGR) 2004 and older models. This listing is for TF-750 Series 60 Detroit Compressor. […]