Ford F-150 Clutch Master and Slave Cylinder CC649043

This is a clutch hydraulic assembly for manual-transmission 1997-2003 Ford F-150, 2004 F-150 Heritage and 1997-1999 F-250 (light duty) trucks. It includes the master cylinder, the hydraulic line and the concentric slave cylinder that mounts around the input shaft inside the bellhousing. It crosses to CC649043, XL3Z-7A543-AA, 2L3Z-7A543-AA, 6L3Z-7A543-AA and 6L5Z-7A508-AA.

The slave cylinder can only be reached with the transmission out, so if the clutch is being replaced this is the time to change the whole hydraulic system. A slave that starts leaking after a new clutch goes in soaks the new disc and means pulling the transmission a second time.

Signs the clutch hydraulics are failing: the pedal sinks slowly to the floor or stays down, the pedal feels soft or spongy, the reservoir level keeps dropping, fluid is wet on the firewall or the bottom of the bellhousing, or it grinds going into gear because the clutch no longer releases all the way. If bleeding brings the pedal back for a day and then it goes soft again, a seal is leaking and the part needs replacing, not more bleeding.

Before install, match the new parts against the old ones: master mounting ears, the pedal pushrod end and the slave mounting should all line up. After install, bleed or check the system until the pedal is firm and returns all the way, and confirm the clutch releases cleanly with the engine running.