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


  • Brand New Radiator Overflow Bottle
  • Commonly called "Coolant Overflow Tank" or "Reservoir"
  • Strengthened and redesigned in the vulnerable areas of failure
  • Replacement for originals that are cracked or broken
  • Plastic construction
  • Includes Cap

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.

4.0 / 5.0
1 Review
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1 Star
overflow bottle fits vw jetta 2001 .thanks.
fits perfectly,no spills,thanks a1 auto.saves me the money too, have someone else to put it on.
April 21, 2018
3 months ago
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Vehicle Fit

  • 2000-2006 Audi TT Radiator Overflow Bottle with Cap
  • 2000-2006 Audi TT Quattro Radiator Overflow Bottle with Cap
  • 2000-2006 VW Golf Radiator Overflow Bottle with Cap
  • 2000-2004 VW Jetta Radiator Overflow Bottle with Cap
  • 2005 VW Jetta Radiator Overflow Bottle with Cap (8th Vin Digit J or M)

This part replaces:

  • Dorman 603-027
  • OE # 1J0 121 403B
  • OE # 1J0 121 403E
  • OE # 1J0 121 403F
  • OE # 1J0 121 403D
  • Hollander 671-50131
Part #: 1AROB00219