Our radiator 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.

Specifications:

  • Replacement for originals that are cracked or broken
  • Commonly called "Coolant Reservoir" assembly
  • Replaces dealer part number: 4A0-121-403, 4A0121403
  • Plastic construction
  • Direct replacement
  • Built to strict quality control standards
  • Does NOT include Cap

Replace your broken or cracked one now with this great fitting radiator overflow bottle.

Item Condition: New

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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.

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Vehicle Fit

Year Make Model Description
1992-1994Audi 100 Audi 100 Quattro without Cap Radiator Overflow Bottle
1992-1994Audi 100 Audi 100 without Cap Radiator Overflow Bottle
1992-1994Audi 100 Quattro Audi 100 Quattro without Cap Radiator Overflow Bottle
1995-1998Audi A6 Audi A6 without Cap Radiator Overflow Bottle
1995-1998Audi A6 Quattro Audi A6 Quattro without Cap Radiator Overflow Bottle
1995-1998Audi A6 Quattro Audi A6 Quattro Quattro without Cap Radiator Overflow Bottle
1992-1994Audi S4 Audi S4 without Cap Radiator Overflow Bottle
1995Audi S6 Audi S6 without Cap Radiator Overflow Bottle

This part replaces:

  • OE # 4A0 121 403
Only 5 left in stock
Part #: 1AROB00051


Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout