Replaces

Automatic Transmission Wire Harness Connector - 1ATRX00021

This replacement Automatic Transmission Plug Adapter is just what you need to get your Mercedes-Benz in good running order again!

Transmission fluid leakage from around the original plug adapter is a common problem on some Mercedes-Benz automatic transmissions. This aftermarket adaptor is a revised design that replaces the original.

Specifications:

  • Brand New Replacement Adapter
  • Includes new O-rings
  • Replaces dealer part numbers: 2035400253, 203 540 0253
  • Correct for models with 722.6XX automatic transmissions
    • fits both 2WD and AWD models
  • Built to strict quality control standards

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 : Jacking Up the Vehicle (1:06)
    • Put the vehicle in park with the e-brake one
    • Jack up the vehicle from the front crossmember
    • Place two jack stands on either pinchweld where the cut is in the side skirt
    • Carefully lower the vehicle onto the jack stands
    • Lift from the rear engine cross member with the jack
    • Move the jack stands to the rear cross member
    • Count the number of teeth on the jack stand and match the other side
    • Carefully lower the vehicle off the jack
    • Make sure the vehicle is secure on the stands
  2. step : Removing the Transmission Receptacle (2:45)
    • Rotate the tab counterclockwise to release the connector
    • Pull the connector out
    • Have a drain pan ready
    • Loosen the 7mm bolt inside the connector receptacle
    • Remove the receptacle and o-ring
  3. step : Installing the Transmission Receptacle (4:37)
    • With both o-rings on the receptacle, press it into place
    • Tighten the 7mm bolt to the receptacle
    • Torque the bolt to 22 inch-pounds
    • Connect the connector into the receptacle
    • Clean off the surface
  4. step : Lowering the Vehicle (6:07)
    • Jack the vehicle from the rear engine cross member
    • Move the jack to the front cross member
    • Lower the vehicle onto the stands on both sides
    • Jack up from the front crossmember
    • Remove the jack stands
    • Lower the vehicle
  5. step : Checking the Transmission Level (6:43)
    • Make sure the temperature outside is between 70 and 100 degrees
    • Start the vehicle
    • Keep the brake pressed
    • Cycle through each gear
    • Check the fluid level with the vehicle in park and the engine running
    • Remove the transmission fill tube
    • Insert the transmission dipstick
    • Check the fluid level

Tools needed for replacement:

    General Tools

  • Jack Stands
  • Drain Pan
  • Floor Jack

  • Materials, Fluids, and Supplies

  • Paper Towels

  • Ratchets & Related

  • Ratchet
  • Torque Wrench
  • Socket Extensions

  • Sockets - Metric

  • 7mm Socket

5.0 / 5.0
2 Reviews
5 Stars
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Wrong part in database may have nothing wrong with 1A Auto order
From checking the database from 1 A Auto my Mercedes 1995 S320 saying this is for its transmission 722.6X which shoul dbe it BUT the transmission in the car is a 722.5X for some reasons.

From Internet reseach to Youtube indicating 722.6X would be the transmission. Mercedes VIN number otherwise to be a 722.5X transmission and also mechanic checked after raised the car seeing it is 722.5X so I got a wrong part.

I am return it so please have RMA number for me; sorry but I have always been 1A Auto customer and always be.
June 13, 2018
Purchased
1 month ago
Response from 1A Auto
Thank you for leaving a product review for the part you ordered. One of our representatives will be reaching out to your shortly to help with a return!
June 14, 2018
Tim K
received my item fast, And very easy to install with basic tools. for those who will replace this iten them selves, unplug wires, unscrew bolt inside then twist and pull out to remove harness cdo not over tighten) very fragile.
April 13, 2013
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Vehicle Fit

  • 2005-2007 Chrysler 300 C Automatic Transmission Wire Harness Connector
  • 2004-2007 Chrysler Crossfire Automatic Transmission Wire Harness Connector
  • 2003-2009 Dodge Sprinter Van Automatic Transmission Wire Harness Connector
  • 2002-2012 Freightliner Sprinter Automatic Transmission Wire Harness Connector
  • 1997-2005 Mercedes Benz C230 Automatic Transmission Wire Harness Connector
  • 2001-2005 Mercedes Benz C240 Automatic Transmission Wire Harness Connector
  • 1994-2007 Mercedes Benz C280 Automatic Transmission Wire Harness Connector
  • 2002-2004 Mercedes Benz C32 AMG Automatic Transmission Wire Harness Connector
  • 2001-2005 Mercedes Benz C320 Automatic Transmission Wire Harness Connector
  • 2006-2007 Mercedes Benz C350 Automatic Transmission Wire Harness Connector
  • 1995-1997 Mercedes Benz C36 AMG Automatic Transmission Wire Harness Connector
  • 1998-2000 Mercedes Benz C43 AMG Automatic Transmission Wire Harness Connector
  • 2005-2006 Mercedes Benz C55 AMG Automatic Transmission Wire Harness Connector
  • 1998-2006 Mercedes Benz CL500 Automatic Transmission Wire Harness Connector
  • 2001-2006 Mercedes Benz CL55 AMG Automatic Transmission Wire Harness Connector
  • 1998-2006 Mercedes Benz CL600 Automatic Transmission Wire Harness Connector
  • 2005-2006 Mercedes Benz CL65 AMG Automatic Transmission Wire Harness Connector
  • 1998-2005 Mercedes Benz CLK320 Automatic Transmission Wire Harness Connector
  • 1999-2003 Mercedes Benz CLK430 Automatic Transmission Wire Harness Connector
  • 2003-2006 Mercedes Benz CLK500 Automatic Transmission Wire Harness Connector
  • 2006 Mercedes Benz CLS55 AMG Automatic Transmission Wire Harness Connector
  • 1996-1999 Mercedes Benz E300 Automatic Transmission Wire Harness Connector
  • 1996-2006 Mercedes Benz E320 Automatic Transmission Wire Harness Connector
  • 2006-2007 Mercedes Benz E350 Automatic Transmission Wire Harness Connector
  • 1997 Mercedes Benz E420 Automatic Transmission Wire Harness Connector
  • 1998-2002 Mercedes Benz E430 Automatic Transmission Wire Harness Connector
  • 2003-2006 Mercedes Benz E500 Automatic Transmission Wire Harness Connector
  • 1999-2006 Mercedes Benz E55 AMG Automatic Transmission Wire Harness Connector
  • 2002-2005 Mercedes Benz G500 Automatic Transmission Wire Harness Connector
  • 2003-2005 Mercedes Benz G55 AMG Automatic Transmission Wire Harness Connector
  • 1998-2002 Mercedes Benz ML320 Automatic Transmission Wire Harness Connector
  • 2003-2005 Mercedes Benz ML350 Automatic Transmission Wire Harness Connector
  • 1999-2001 Mercedes Benz ML430 Automatic Transmission Wire Harness Connector
  • 2002-2005 Mercedes Benz ML500 Automatic Transmission Wire Harness Connector
  • 2000-2003 Mercedes Benz ML55 AMG Automatic Transmission Wire Harness Connector
  • 1994-1999 Mercedes Benz S320 Automatic Transmission Wire Harness Connector
  • 2006 Mercedes Benz S350 Automatic Transmission Wire Harness Connector
  • 1994-1999 Mercedes Benz S420 Automatic Transmission Wire Harness Connector
  • 2000-2006 Mercedes Benz S430 Automatic Transmission Wire Harness Connector
  • 2004-2006 Mercedes Benz S500 Automatic Transmission Wire Harness Connector
  • 2001-2006 Mercedes Benz S55 AMG Automatic Transmission Wire Harness Connector
  • 1994-2006 Mercedes Benz S600 Automatic Transmission Wire Harness Connector
  • 2006 Mercedes Benz S65 AMG Automatic Transmission Wire Harness Connector
  • 1994-1997 Mercedes Benz SL320 Automatic Transmission Wire Harness Connector
  • 1994-2006 Mercedes Benz SL500 Automatic Transmission Wire Harness Connector
  • 2003-2007 Mercedes Benz SL55 AMG Automatic Transmission Wire Harness Connector
  • 1994-2007 Mercedes Benz SL600 Automatic Transmission Wire Harness Connector
  • 2005-2007 Mercedes Benz SL65 AMG Automatic Transmission Wire Harness Connector
  • 1998-2004 Mercedes Benz SLK230 Automatic Transmission Wire Harness Connector
  • 2002-2004 Mercedes Benz SLK32 AMG Automatic Transmission Wire Harness Connector
  • 2001-2004 Mercedes Benz SLK320 Automatic Transmission Wire Harness Connector
  • 2005-2006 Mercedes Benz SLR McLaren Automatic Transmission Wire Harness Connector

This part replaces:

  • OE # 2035400253
Part #: 1ATRX00021

How-to Video:

(09:42 min)