Modular Combo Block (4 Port & 2 Channel) 1/8NPTThe Turbosmart Modular Combo (Reference & Sensor) Manifold, is an expandable, professional solution for remote mounting expensive and delicate sensors aswell as a shared reference distribution manifold away from high vibrations and heat such as those found in engine bays. Manufactured from Billet (6262 T6) Aluminium and Black anodized, with 1 8 NPT Ports, the Modular Combo Manifold allows for 2 channels (sensors) to be neatly mounted away from your