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 Serpentine Belt Tensioner
  • Includes pulley
  • Replaces dealer part numbers: 12577764, 12603527
  • Direct replacement
  • Built to strict quality control standards

This tensioner makes a great replacement and has good cost savings over a dealer unit.

Item Condition: New

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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 Bottle (0:45)
    • Remove the two 10mm nuts that hold the coolant overflow tank
    • Pull the coolant tank up and out
  2. step : Removing the Serpentine Belt (1:11)
    • Remove the 13mm nut from the tensioner bracket
    • Familiarize yourself with the route of the serpentine belt
    • 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 Tensioner (2:28)
    • Loosen the 15mm bolt holding the tensioner with a 3/8" breaker bar or 3/8" drive ratchet with a piece of pipe for leverage
    • Remove the 15mm bolt holding the tensioner
    • Remove the tensioner
  4. step : Installing the Tensioner (3:18)
    • Place the bolt in its proper hole
    • Align the pin on the tensioner with the hole on the engine block
    • Hand thread the 15mm bolt as far as possible
    • Tighten the bolt between 40 and 45 foot-pounds
  5. step : Reinstalling the Serpentine Belt (4:30)
    • Familiarize yourself with the diagram of the serpentine belt
    • Loop the belt around the crank pulley and A/C Pulley
    • Bring it around the power steering pulley
    • Bring it around the water pump
    • Bring it around the 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
    • Check that the belt is on correctly on all the pulleys
    • Place the 13mm bolt back into the bracket
  6. step : Reinstalling the Coolant Bottle (7:17)
    • Insert the coolant bottle into place
    • Tighten the 10mm nuts to the coolant bottle

Tools needed for replacement:

    Ratchets & Related

  • Ratchet
  • 3/8 Inch Breaker Bar
  • A Piece of Pipe (for leverage)
  • 3/8 Inch Drive Ratchet

  • Sockets - Metric

  • 15mm Socket
  • 13mm Socket
  • 10mm Socket

5.0 / 5.0
1 Review
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Tensioner on my 08 Impala
Easy job. There's a spot on the tensioner for a 1/2" rachet so you can pull it easily to remove and install the belt. Good purchase.
September 9, 2018
Purchased
1 month ago
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Vehicle Fit

Year Make Model Description
2006-2007Buick Terraza Buick Terraza Serpentine Belt Tensioner with Pulley V6 3.9L
2006-2011Chevy Impala Chevy Impala Serpentine Belt Tensioner with Pulley V6 3.5L
2006-2007Chevy Malibu Chevy Malibu SS Serpentine Belt Tensioner with Pulley V6 3.9L
2007-2010Chevy Malibu Chevy Malibu Serpentine Belt Tensioner with Pulley V6 3.5L
2006-2007Chevy Malibu Maxx Chevy Malibu Maxx SS Serpentine Belt Tensioner with Pulley
2007Chevy Malibu Maxx Chevy Malibu Maxx Serpentine Belt Tensioner with Pulley
2006Chevy Monte Carlo Chevy Monte Carlo Serpentine Belt Tensioner with Pulley V6 3.9L
2006-2007Chevy Monte Carlo Chevy Monte Carlo Serpentine Belt Tensioner with Pulley V6 3.5L
2006-2009Chevy Uplander Chevy Uplander Serpentine Belt Tensioner with Pulley V6 3.9L
2006-2009Pontiac G6 Pontiac G6 Serpentine Belt Tensioner with Pulley V6 3.9L
2007-2010Pontiac G6 Pontiac G6 Serpentine Belt Tensioner with Pulley V6 3.5L
2006-2009Pontiac Montana Pontiac Montana Serpentine Belt Tensioner with Pulley V6 3.9L
2006Pontiac Montana SV6 Pontiac Montana SV6 Serpentine Belt Tensioner with Pulley V6 3.9L
2007-2008Saturn Aura Saturn Aura Serpentine Belt Tensioner with Pulley V6 3.5L
2006-2007Saturn Relay Saturn Relay Serpentine Belt Tensioner with Pulley V6 3.9L
2008-2009Saturn Vue Saturn Vue Serpentine Belt Tensioner with Pulley V6 3.5L

This part replaces:

  • OE # 12603527
  • OE # 12577764
Part #: 1AEBT00073


Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

How-to Video:

(07:56 min)