Our coolant overflow bottles are some of the highest quality replacements on the market!

This radiator coolant overflow tank has been designed to replace the original design.


  • Direct replacement for originals that are cracked or broken
  • Replaces dealer part numbers: 16470-74181, 16470-03050, 16405-74171, 16405-74240, 1647074181, 1647003050, 1640574171, 1640574240
  • Strengthened and redesigned in the vulnerable areas of failure
  • Plastic construction
  • Commonly called Coolant Reservoir by Toyota
  • Does not have provision for Low Fluid Sensor

Now you can buy a high quality coolant reservoir that is built to strict quality control standards. REPLACE your broken or cracked one now with this great fitting Radiator Overflow Bottle.

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

  1. step : Remove the radiator coolant tank (0:17)
    • Use a pair of pliers to remove the clamp on the hose.
    • Pull the bottle up and out.
  2. step : install the new radiator coolant tank (0:48)
    • Insert the bottle onto the mount.
    • Use the pliers to re clamp the hose to the radiator.

Tools needed for replacement:

    Pliers, Cutters & misc Wrenches

  • Slip-Joint Pliers

5.0 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
My Lexus overflow bottle
I bought this at the third of the cost of anywhere else. This was a good buy and works perfectly. I will use you for any more parts needed for my old car.
July 31, 2017
7 months ago
Over flow tank
Fits perfectly in my 92 Camry V6. Installed in about 3 minutes. Just pulled off hoses and installed on new cap.
March 20, 2017
11 months ago
Good overflow container. It fit perfectly and is performing just as I thought it would. I highly recommend it to anyone who has a Toyota Camry as well
February 5, 2018
1 month ago
could not find this item no other place.I tried about ten Autoparts stores.you guys came through.Impressive!!
January 28, 2018
2 months ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 1 question Browse 1 question and 3 answers
Does it come with a new cap?
Jason E on Apr 30, 2016
BEST ANSWER: Yes, the new overflow tank did come with a new cap. I have been very satisfied with everything I have purchased from 1 A Auto for my 1995 Camry LE.

How-to Video:

(01:55 min)

Tools List:

    Pliers, Cutters & misc Wrenches

  • Slip-Joint Pliers

This part replaces:

  • OE # 1647074181
  • Dorman 603-401

Vehicle Fit

  • 1994-1996 Lexus ES300 Radiator Overflow Bottle with Cap
  • 1995-1996 Toyota Avalon Radiator Overflow Bottle with Cap
  • 1992-1996 Toyota Camry Radiator Overflow Bottle with Cap
Part #: 1AROB00033

Ships Same Day for orders placed by 4 P.M. ET

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