This replacement heater hose tube is among the highest quality replacements on the market! After years of exposure to the elements, many tubes will develop small holes and then begin to leak. This part is designed to replace that leaking or damaged tube.

Specifications:

  • Water Pump Bypass Tube
  • Replaces dealer part number: 53021380AM
  • Direct replacement for a weakened or leaking tube
  • Built to strict quality control standards

This replacement water pump bypass heater tube makes a good replacement and has good cost savings over a dealer unit.

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 : Draining the Radiator Coolant (0:41)
    • Have a drain pan ready
    • Open the drain valve and let the coolant run out
    • Press down on the radiator cap and turn counterclockwise
  2. step : Removing the Serpentine Belt (1:16)
    • Familiarize yourself with the route of the serpentine belt under the hood or on the radiator support
    • Insert the 3/8 inch drive ratchet into the tensioner
    • Turn the tensioner clockwise to loosen the belt
    • Pull the belt off the alternator
    • Release the tensioner
    • Pull the belt off by hand
  3. step : Removing the Water Pump Bypass Tube (2:16)
    • Spray rust penetrant at the top of the pipe
    • Loosen the hose clamp at the bottom of the heater pipe with pliers
    • Twist the end of the hose free
    • Remove the lower hose
    • Remove the lower idler pulley with a 13mm socket
    • Remove the heater pipe's lower retainer bolt with a 13mm socket
    • Remove the heater pipe's upper retainer bolt with a 10mm socket
    • Release the top of the heater pipe with a pry bar
    • Twist and pry multiple time to release the pipe from the O-ring
  4. step : Installing the Water Pump Bypass Tube (4:17)
    • Move the upper retainer to the top of the pipe to assist in placing the pipe
    • Tighten the upper 10mm retainer bolt
    • Tighten the lower 13mm retainer bolt
    • Reinstall the hose at the bottom of the retainer pipe
    • Insert the coolant hose to the bottom of the heater pipe
    • Tighten the hose clamp
    • Insert and tighten the 13mm bolt to the lower idler pulley
  5. step : Installing the Serpentine Belt (5:15)
    • Loop the belt around the crank shaft pulley
    • Bring it around the water pump
    • Bring it under the power steering pulley
    • Bring it over the A/C Pulley
    • Bring it under the upper idler pulley
    • Bring it over the lower idler pulley
    • Bring it around the belt tensioner
    • Pull the tensioner clockwise with the 3/8 inch ratchet
    • Pull the belt over the alternator
    • Release the tensioner
  6. step : Refilling the Radiator Coolant (6:26)
    • Tighten the drain valve to the bottom of the radiator
    • Place a funnel into the radiator top
    • Refill the radiator with Mopar 50/50 coolant
    • Turn the heat on in your vehicle and let it run with the cap off
    • Wait for the air bubbles to dissipate
    • Shut the heat off after the fluid level settles are the bubbles have dissipated
    • Tighten the radiator cap

Tools needed for replacement:

    General Tools

  • Drain Pan

  • Materials, Fluids, and Supplies

  • Rust Penetrant
  • Anti-Freeze

  • Pliers, Cutters & misc Wrenches

  • Channel-Lock Pliers

  • Ratchets & Related

  • Socket Extensions
  • 3/8 Inch Drive Ratchet

  • Screwdrivers & Related

  • Pry Bar

  • Sockets - Metric

  • 10mm Socket
  • 13mm Socket

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How-to Video:

(07:22 min)

Tools List:

    General Tools

  • Drain Pan

  • Materials, Fluids, and Supplies

  • Rust Penetrant
  • Anti-Freeze

  • Pliers, Cutters & misc Wrenches

  • Channel-Lock Pliers

  • Ratchets & Related

  • Socket Extensions
  • 3/8 Inch Drive Ratchet

  • Screwdrivers & Related

  • Pry Bar

  • Sockets - Metric

  • 10mm Socket
  • 13mm Socket



This part replaces:

  • OE # 53021380AM
  • Dorman 56401

Vehicle Fit

  • 2007-2008 Chrysler Aspen Water Pump Bypass Tube V8 5.7L Dorman 56401
  • 2004-2008 Dodge Durango Water Pump Bypass Tube V8 5.7L Dorman 56401
  • 2003-2008 Dodge Ram 1500 Truck Water Pump Bypass Tube V8 5.7L Dorman 56401
  • 2003-2008 Dodge Ram 2500 Truck Water Pump Bypass Tube V8 5.7L Dorman 56401
  • 2003-2008 Dodge Ram 3500 Truck Water Pump Bypass Tube V8 5.7L Dorman 56401
Only 4 left in stock
Part #: 1AEMX00246

Ships Same Day for orders placed by 4 P.M. ET

Dorman
Brand #: 56401

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Customer Feedback

"Thanks for the fast reliable service. Great price, and the headlights were as good as oem or better!!! Keep up the good work..."
- Dwuan M.
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