OEMTOOLS 24434 Ford Valve Spring Compressor Applications: 1991-2004 Ford vehicles with 4.6L, two-valve, V8 engines; 4.6 4V, 5.4 V8 and 6.8 V10 Works with engine removed or installed, cylinder head on or off For Ford Lincoln or Mercury vehicles with the 2V V8 engines NOT for Triton 5.4 3V Saves time