The slave cylinder actuates the clutch arm by use of hydraulic pressure.  Age and use wear this part out.  The first sign is a vague clutch, followed by leaking and eventually total failure.  This is a great thing to have around when your goes out, it is only a matter of time.  If your clutch is not as crisp as it used to be, go ahead and replace it or keep one in the glove box just in case.  This is a new, not rebuilt slave cylinder. We have sold literally 1000's of these with great success.  This part meets or exceeds OE spec.

This clutch slave cylinder fits the following:

MAKE	YEAR	TYPE	LITER	DELIVERY	ASPIRATION	VIN	DESIGNATION	APPLICATION
TOYOTA 4RUNNER	2000	L4	2.7	FI	N		3RZFE	Clutch Slave Cylinder
TOYOTA 4RUNNER	1999	L4	2.7	FI	N		3RZFE	Clutch Slave Cylinder
TOYOTA 4RUNNER	1998	L4	2.7	FI	N	M	3RZFE	Clutch Slave Cylinder
TOYOTA 4RUNNER	1997	L4	2.7	FI	N	M	3RZFE	Clutch Slave Cylinder
TOYOTA 4RUNNER	1996	L4	2.7	FI	N	M	3RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	2004	L4	2.4	FI	N		2RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	2004	L4	2.7	FI	N		3RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	2003	L4	2.4	FI	N		2RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	2003	L4	2.7	FI	N		3RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	2002	L4	2.4	FI	N		2RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	2002	L4	2.7	FI	N		3RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	2001	L4	2.4	FI	N		2RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	2001	L4	2.7	FI	N		3RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	2000	L4	2.4	FI	N		2RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	2000	L4	2.7	FI	N		3RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	1999	L4	2.4	FI	N		2RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	1999	L4	2.7	FI	N		3RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	1998	L4	2.4	FI	N	L	2RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	1998	L4	2.7	FI	N	M	3RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	1997	L4	2.4	FI	N	L	2RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	1997	L4	2.7	FI	N	M	3RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	1996	L4	2.4	FI	N	L	2RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	1996	L4	2.7	FI	N	M	3RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	1995	L4	2.4	FI	N	U	2RZFE	Clutch Slave Cylinder
TOYOTA TACOMA	1995	L4	2.7	FI	N	U	3RZFE	Clutch Slave Cylinder
TOYOTA TACOMA REGULAR CAB	1997	L4	2.4	FI	N	L	2RZFE	Clutch Slave Cylinder
TOYOTA TACOMA REGULAR CAB	1997	L4	2.7	FI	N	M	3RZFE	Clutch Slave Cylinder
TOYOTA TACOMA REGULAR CAB	1996	L4	2.4	FI	N	L	2RZFE	Clutch Slave Cylinder
TOYOTA TACOMA REGULAR CAB	1996	L4	2.7	FI	N	M	3RZFE	Clutch Slave Cylinder
TOYOTA TACOMA REGULAR CAB	1995	L4	2.4	FI	N	U	2RZFE	Clutch Slave Cylinder
TOYOTA TACOMA REGULAR CAB	1995	L4	2.7	FI	N	U	3RZFE	Clutch Slave Cylinder