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.

Specifications:

  • Radiator Overflow Bottle
  • Commonly called "Coolant Overflow Tank or Reservoir, or Expansion Tank"
  • Plastic construction
  • Direct replacement
  • Built to strict quality control standards
  • Does NOT include 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.

  1. step : Removing the Coolant Overflow Bottle (0:35)
    • Disconnect the coolant bottle wiring harness
    • Loosen the upper hose clamp with needle nose pliers and pull it back
    • Pull the upper hose off the coolant bottle
    • Remove two Phillips head screws from the coolant bottle
    • Lift the coolant bottle up and out
    • Loosen the lower hose clamp with needle nose pliers and pull it back
    • Clamp the lower hose closed with vise grip pliers
    • Pull the lower hose off the coolant bottle
  2. step : Installing the New Coolant Overflow Bottle (1:47)
    • Push the new coolant bottle onto the lower hose
    • Remove the vise grip pliers from the lower hose
    • Push the hose clamp back on with the needle nose pliers
    • Line up the coolant bottle peg with the locating hole and put the bottle into place
    • Connect the upper hose to the coolant bottle
    • Put on the hose clamp with the needle nose pliers
    • Insert the two Phillips head screwdrivers into the coolant bottle
    • Connect the coolant bottle wiring harness
  3. step : Refilling the Coolant (3:05)
    • Add coolant to the coolant bottle with a funnel
    • Fill to the max-fill line
    • Twist the cap from the old coolant bottle onto the new coolant bottle

Tools needed for replacement:

    General Tools

  • Funnel

  • Pliers, Cutters & misc Wrenches

  • Needle nose pliers
  • Vise Grip Pliers

  • Screwdrivers & Related

  • Phillips Head Screwdriver

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Vehicle Fit

  • 2000-2006 Audi TT without Cap Radiator Coolant Overflow Bottle
  • 2000-2006 Audi TT Quattro without Cap Radiator Coolant Overflow Bottle
  • 1999-2006 VW Golf without Cap Radiator Coolant Overflow Bottle
  • 1999-2005 VW Jetta without Cap Radiator Coolant Overflow Bottle
  • 2005 VW Jetta without Cap Radiator Coolant Overflow Bottle (8th Vin Digit J or M)

This part replaces:

  • OE # 1J0 121 407F
  • Hollander 671-50131
  • OE # 1J0 121 407B
  • OE # 1J0 121 407D
  • OE # 1J0 121 407E
Only 2 left in stock
Part #: 1AROB00138

How-to Video:

(03:41 min)