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16405-0P040 2011-2020 Toyota Sienna Coolant Antifreeze Reservoir Tank Cap - New Genuine Toyota Part
16405-0P040 2011-2020 Toyota Sienna Coolant Antifreeze Reservoir Tank Cap - New Genuine Toyota Part
16405-0P040 2011-2020 Toyota Sienna Coolant Antifreeze Reservoir Tank Cap - New Genuine Toyota Part
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2011-2020 Toyota Sienna Coolant Antifreeze Reservoir Tank Cap

In stock
$ 14.74

2011-2020 Toyota Sienna Coolant Antifreeze Reservoir Tank Cap

The 2011-2020 Toyota Sienna Coolant Antifreeze Reservoir Tank Cap - New Genuine Toyota Part is an important component for maintaining the proper functioning of your vehicle's cooling system. This OEM (original equipment manufacturer) auto part is specifically designed for the 2011-2020 Toyota Sienna model, ensuring a perfect fit and optimal performance.

Installation Instructions:

Tools Needed:

  • None

Skill Level: Beginner

Note: Before starting the installation process, make sure that the vehicle is turned off and the keys are removed from the ignition. It is also recommended to wear protective gear, such as gloves and safety glasses.

  1. Locate the coolant antifreeze reservoir tank cap on your 2011-2020 Toyota Sienna.

  2. Gently twist the old cap counterclockwise to remove it from the tank.

  3. Take the new genuine Toyota coolant antifreeze reservoir tank cap and align it with the threads on the tank.

  4. Gently twist the new cap clockwise onto the tank until it is securely in place.

  5. Check to make sure the cap is properly seated and tightened.

Estimated Time: This installation process should take around 5-10 minutes to complete, depending on the individual's experience level.

Note: It is important to use the correct type of coolant antifreeze recommended by the manufacturer for your specific vehicle. Consult your owner's manual or a professional mechanic for guidance if necessary.

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Simply return your part in the exact same condition and packaging that you received it in within 30 days for a full refund of the purchase price of the part, minus the original shipping charges. You don't even have to contact us. Just be sure the read the requirements below and follow the instructions at the bottom of this page.



Any part that does not have all of the original packaging with the attached manufacturer part number label.

Believe it or not, this is super important! Don't throw away the packaging. Manufacturers won't accept returns on a part without the genuine OEM Packaging, so we won't be able to credit you. (Even if the part is brand new with no packaging, we would have to return it to you).


You have installed or attempted to install or disassemble the part
You have painted the part.
You have broken the part.
You have lost the original packaging.
You have gotten the part wet, or the part has greasy fingerprints.


Electrical parts can only be returned if they have not been installed, programmed, or plugged in. If the part shows signs, of an attempted install we will be unable to accept your return.

An electrical part is any part that plugs in, contains a switch, sensor, circuit board, or electrical wiring.


All Products are. covered by a 1-year Warranty.


Our Warranty Coverage

We will replace the parts free of charge for any reason not caused by collision or installation, other human intervention, incorrect application, modifications, use of the products outside the context of its normal, customary, and intended operating conditions (including without limitation, any form of commercial, fleet, rental or off-road use), or physical damage for 1 year and only for the vehicle in which the part was originally installed.

One Time replacement.

Warranty Covers only one replacement in the warranty period. Multiple Replacements are not covered, after one replacement warranty will no longer be in effect.

Warranty Is nontransferable and is only valid for the VIN number of the vehicle for which it was purchased. Warranty does not transfer to the new owner of the item purchased or the vehicle purchased with the item installed.

Customer Reviews

Based on 5 reviews
Fast shipping, looks just like Top Quality and fit like Top Quality. I would definitly do busines...

Fit perfectly!!! No modifications. Highly recommend!

Annette H.
Installation Ease: Easy - Anyone can install it
Installation time : Less than 5 minutes
Tools Required: No Tools
Part Quality: Excellent Quality
Hard to Find Part Shipped Fast

I needed a coolant reservoir tank cap for my 2015 Toyota Sienna, and I had a very difficult time finding one online. Not only was the correct part available, but it also arrived quickly!

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