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"
  • Replaces dealer part number: 30741975
  • Plastic construction
  • Direct replacement
  • Cap is NOT included

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 : Removing the Coolant Level Sensor (0:48)
    • Pry the power steering fluid reservoir off the coolant bottle with a flat blade screwdriver
    • Pull aside the steering fluid reservoir
    • Pull the coolant bottle off its bracket
    • Disconnect the coolant level sensor wiring harness
    • Loosen the upper coolant hose clamp with wire cutters
    • Close the hose of with vise grip pliers
    • Pull off the coolant level sensor
    • If you are replacing the sensor alone, continue to Step 4
  2. step : Removing the Coolant Bottle (1:37)
    • Close the lower coolant hose with vise grip pliers
    • Loosen the lower coolant hose clamp with a 7mm socket and ratchet
    • Pull the lower hose off the coolant bottle
    • Pull the coolant bottle up and out
  3. step : Installing the New Coolant Bottle (2:15)
    • Put the lower coolant hose onto the coolant bottle
    • Tighten the hose clamp
    • Release the vise grip pliers
  4. step : Installing the New Coolant Level Sensor (2:35)
    • Push on the coolant level sensor
    • Push the coolant bottle onto its bracket
    • Push the upper coolant hose onto the coolant bottle
    • Tighten the hose clamp
    • Release the vise grip pliers
    • Connect the level sensor wiring harness
    • Clip the steering fluid reservoir onto the coolant bottle
    • Twist off the coolant bottle cap
    • Add coolant to the bottle as necessary
    • Twist on the coolant bottle cap

Tools needed for replacement:

    General Tools

  • Drain Pan

  • Materials, Fluids, and Supplies

  • 3/4 Inch Hose Clamps

  • Pliers, Cutters & misc Wrenches

  • Needle nose pliers
  • Vise Grip Pliers
  • Wire Cutters

  • Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 7mm Socket

Vehicle Fit

  • 1999-2004 Volvo C70 without Cap Radiator Overflow Bottle
  • 2001-2009 Volvo S60 without Cap Radiator Overflow Bottle
  • 1999-2000 Volvo S70 without Cap Radiator Overflow Bottle
  • 1999-2006 Volvo S80 without Cap Radiator Overflow Bottle excluding Turbo Models
  • 2004-2006 Volvo S80 without Cap Radiator Overflow Bottle L5 2.5L
  • 1999-2000 Volvo V70 without Cap Radiator Overflow Bottle
  • 2001-2007 Volvo V70 without Cap Radiator Overflow Bottle
  • 2003-2007 Volvo XC70 without Cap Radiator Overflow Bottle
  • 2003-2006 Volvo XC90 Radiator Overflow Bottle without Cap L5 2.5L

This part replaces:

  • OE # 30741975, 30741973
  • OE # 23929
Part #: 1AROB00134

How-to Video:

(03:50 min)