2006-11 Honda Civic Radiator Overflow Bottle - 1AROB00166

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Our coolant overflow bottles are some of the highest quality replacements on the market! This radiator coolant overflow has been designed to replace the original design.


  • Radiator Overflow Bottle 
  • Replaces dealer part numbers: 19101-RNA-A00, 19101-RNA-A01, 19101RNAA00, 19101RNAA01
  • Plastic construction
  • Direct replacements
  • Built to strict quality control standards

Replace your missing or cracked tank now with this great fitting radiator overflow bottle reservoir.

Item Condition: New

Attention California Customers:

WARNING:  This product can expose you to chemicals including Styrene and Bisphenol A (BPA), which are known to the State of California to cause cancer, and birth defects or other reproductive harm.  For more information, go to

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.

  1. step : Removing the Coolant Reservoir (0:20)
    • Unscrew the coolant overflow bottle cap
    • Pop the hose out of the plastic hooks
    • Pull the bottle up and out
  2. step : Installing the Coolant Reservoir (1:30)
    • Slide the coolant reservoir into place
    • Clip in the hose
    • Refill coolant to the fill line
    • Tighten the bottle cap

Tools needed for replacement:

    General Tools

  • Funnel
  • Pick

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Year Make Model Description
2006-2011Honda Civic Honda Civic Radiator Overflow Bottle
Part #: 1AROB00166

Order must be placed by 4pm ET
Delivery options for:

Estimated Arrival Cost

Deliveries made to PO Boxes and FPO may take longer. See our Shipping & Delivery for more information.

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

How-to Video:

(03:49 min)