Powerstroke Coolant Recircluation Kit - Fits 2003-2007 6.0L Powerstroke. Circulates coolant from the rear of head gaskets to the front, eliminating hot spots and preventing coolant puking. Comes complete with all lines and fittings. Recommended when replacing head gaskets or installing head studs.Details: Coolant Recirculation Kit Circulates Coolant From Rear To Front of Head Gaskets Eliminates Hot Spots Prevents Coolant Puking Sold As A Kit SKU: 1039093278 Fits: 2003-2007 Ford F250|F350|F450 w/6.0L Powerstroke Engine