Replaces

2007-2008 Isuzu i-370 Serpentine Belt Tensioner with Pulley (Dorman)

Part Details

  • Brands: Dorman

This part replaces:

  • DORMAN 419-125
  • OE # 12573024

  • New

DORMAN PRODUCTS BELT TENSIONER ASSEMBLY: 419-125

This replacement serpentine belt tensioner is just what you need to get your vehicle in good working order again! If you are hearing a whirring noise from the front of your engine or if your belt often screeches you may be in need of a new belt tensioner. This part commonly wears out between 60,000 and 70,000 Miles. If it fails suddenly it can leave you stranded.

Specifications:

  • Brand New Dorman Serpentine Belt Tensioner
  • Includes pulley
  • Replaces dealer part number: 12573024, 24576885, 8125730240
  • Direct replacement
  • Built to strict quality control standards

This tensioner makes a great 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. Removing the Serpentine Belt (0:54 in the video)
    • Familiarize yourself with the serpentine belt route
    • Use the 3/8 inch drive ratchet to turn the tensioner clockwise
    • Loosen the setpentine belt
    • Remove the belt
  2. Removing the Belt Tensioner (3:00 in the video)
    • Remove the 15mm bolt from the tensioner
    • Remove the tensioner
  3. Replacing the Tensioner (3:51 in the video)
    • If necessary, remove the 13mm bolt from the pulley bearing and replace the pulley
    • Slide the tensioner bolt into place
    • Push the tensioner toward the engine
    • Push the locating bolt into place
    • Tighten the bolt by hand
    • Tighten the bolt to between 35 – 40 foot-pounds
  4. Reinstalling the Serpentine Belt (5:15 in the video)
    • Inspect the belt for wear
    • Replace the belt with a new one if necessary
    • Start the belt at the crank pulley
    • Bring it over the water pump
    • Bring it around the A/C pulley
    • Bring it around the idler pulley
    • Bring it around the tensioner pulley
    • Bring it around the power steering pulley
    • With the 3/8 inch drive ratchet and a breaker bar or pipe for leverage pull the tensioner over
    • Putt the belt around the alternator
    • Release the tensioner
    • Check that the belt is routed correctly

Tools needed for replacement:

    Ratchets & Related

  • 1/2 Inch Breaker Bar
  • 3/8 Inch Drive Ratchet
  • Ratchet

  • Sockets - Metric

  • 15mm Socket

  • Specialty Tools

  • A Piece of Pipe (for leverage)

How-to Video:

(08:08 min)

Tools List:

    Ratchets & Related

  • 1/2 Inch Breaker Bar
  • 3/8 Inch Drive Ratchet
  • Ratchet

  • Sockets - Metric

  • 15mm Socket

  • Specialty Tools

  • A Piece of Pipe (for leverage)



This part replaces:

  • DORMAN 419-125
  • OE # 12573024

Vehicle Fit

  • 2004-2007 Buick Rainier Serpentine Belt Tensioner with Pulley for L6 4.2L (Dorman)
  • 2004-2008 Chevy Colorado Serpentine Belt Tensioner with Pulley (Dorman)
  • 2009-2012 Chevy Colorado Serpentine Belt Tensioner with Pulley for L5 3.5L (Dorman)
  • 2009-2012 Chevy Colorado Serpentine Belt Tensioner with Pulley for L4 2.9L (Dorman)
  • 2002-2009 Chevy Trailblazer Serpentine Belt Tensioner with Pulley for L6 4.2L (Dorman)
  • 2004-2008 GMC Canyon Serpentine Belt Tensioner with Pulley (Dorman)
  • 2009-2012 GMC Canyon Serpentine Belt Tensioner with Pulley for L4 2.9L (Dorman)
  • 2009-2012 GMC Canyon Serpentine Belt Tensioner with Pulley for L5 3.5L (Dorman)
  • 2002-2009 GMC Envoy Serpentine Belt Tensioner with Pulley for L6 4.2L (Dorman)
  • 2006-2007 Hummer H3 Serpentine Belt Tensioner with Pulley (Dorman)
  • 2008-2010 Hummer H3 Serpentine Belt Tensioner with Pulley for L5 3.7L (Dorman)
  • 2009-2010 Hummer H3T Serpentine Belt Tensioner with Pulley for L5 3.7L (Dorman)
  • 2003-2008 Isuzu Ascender Serpentine Belt Tensioner with Pulley for L6 4.2L (Dorman)
  • 2006 Isuzu i-280 Serpentine Belt Tensioner with Pulley (Dorman)
  • 2007-2008 Isuzu i-290 Serpentine Belt Tensioner with Pulley (Dorman)
  • 2006 Isuzu i-350 Serpentine Belt Tensioner with Pulley (Dorman)
  • 2007-2008 Isuzu i-370 Serpentine Belt Tensioner with Pulley (Dorman)
  • 2002-2004 Olds Bravada Serpentine Belt Tensioner with Pulley (Dorman)
  • 2005-2009 Saab 9-7X Serpentine Belt Tensioner with Pulley for L6 4.2L (Dorman)
$52.95
Save 51%
List: $108.24 Save: $55.29
Only 2 left in stock
Part #: 1AEBT00060

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Dorman
Brand #: 419-125

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