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Your cart is empty. 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:
2003-2009 4Runner 4.0L V6 ( To 01/2009 )
2010 4Runner 2.7L L4
2007-2010 FJ Cruiser
2005-2009 Tacoma ( To 01/2009 )
2006 GS300
2007-2011 GS350
2007-2011 GS450h
2010-2011 GX460
2003-2009 GX470 ( To 01/2009 )
2006-2012 IS250 ( To 09/2011 )
2006-2012 IS350 ( To 09/2011 )
Replaces Part #: 16401-31650, 1640131650 radiator cap.
NOTE: This is NOT a genuine part, it's a aftermarket replacement part manufactured by Allmotorparts.
NOTE: To ensure accurate fitment, please confirm your vehicle information in the above compatibility section and the description.
Gilberto
Reviewed in Mexico on March 30, 2025
Solicité el TAPÓN DEL RADIADOR para mi Toyota FJ Crusier, con dos vendedores diferentes y los dos los regresaron, que según porque son artículos prohibidos en Mexico!!! Razón por la cual no puedo decir si funciona o no!! Jajaja
Customer
Reviewed in the United States on May 2, 2024
I bought this as it appeared to be an OEM replacement as it’s the same price as OEM. I’m driving home and I hear a loud POP, once I get home I arrive to my car smoking, and overheating. I pop the hood and this cap has completely fallen apart, and no longer able to even function. Coolant was squirting out all over my engine through the overflow as there was now nothing to hold back the pressure. It’s a miracle I recovered most of the pieces, I think there may still be a small piece jammed in radiator. If you value your car, and your engine health, buy this part from a reputable dealer. If there was a way I could sue this company for the damages I incurred to my car, believe me I would.
MagnoL
Reviewed in Canada on May 10, 2024
Fit perfect in my FJ Cruiser
Kaylor E. Shemberger
Reviewed in the United States on April 30, 2024
A simple radiator cap is easy to install! Way cheaper than from the dealer!
Butter
Reviewed in the United States on July 25, 2023
I bought this because my old radiator cap broke inside the radiator. My fluids were slowly evaporating and would cause my 4runner to overheat. After switching to this cap, the radiator fluid has remained at the same level and it has been almost a month now. With my previous broken cap, the fluid would be gone within 2 weeks.This was used for 03 4runner.Over all, I would recommend this for OEM replacement.
MIKE
Reviewed in the United States on December 24, 2023
Works same oem . First installing was verytight but loosen as I exercised it.
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