The largest tee in the range, with AN12 male 37-degree flare ports on all three legs. AN12 is used where restriction is the enemy, so this fitting typically appears in pump suction plumbing, dry sump scavenge collection, big oil cooler circuits and coolant swirl pot arrangements. All three ports take standard AN12 female hose ends, giving you flexibility over which leg becomes the inlet. At this size the fitting and the hoses hanging off it carry real weight, so mount or support the tee rather than relying on the hoses to hold it. Adapters can be used to step a branch down to a smaller line if required.