The radiator cap holds the coolant inside the radiator, but it also works as a two-way valve that keeps the right pressure inside so the radiator does it work correctly.
It is extremely important to always make sure to allow the engine to cool down before removing the radiator cap, as removing the cap from a hot system can cause sudden coolant spray and severe burns.
A faulty radiator cap can have a huge impact on the cooling performance of your vehicle, once you have a replacement and your engine is cool, simply unscrew the old cap, and install the new by screwing it on.

Compatible with Toyota Vehicles:
For 1996-2000 4Runner
For 1989-2001 Camry
For 1990-1999 Celica
For 1993-2016 Corolla ( To 08/2016 )
For 2006-2007 Highlander
For 2003-2013 Matrix
For 1992-1998 Paseo
For 2004-2009 Prius
For 2001-2007 Sequoia
For 1999-2001 Solara
For 1990-1992 Supra
For 1993-1998 T100
For 1991-1998 Tercel
For 2000-2006 Tundra

For 1990-1991 ES250
For 1993-1997 GS300
For 1999-2000 RX300
For 2004-2006 RX330
For 2006-2008 RX400h
For 1992-2000 SC300

Replaces Part #: 16401-20353, 1640120353 radiator cap.

NOTE: To ensure accurate fitment, please confirm your vehicle information in the above compatibility section and the description.