https://wesgould.github.io/tags/idler-pulley/ Recent content in Idler Pulley on wesgould.com Hugo en Copyright © 2003 Fri, 01 May 2026 00:00:00 -0500 https://wesgould.github.io/blog/idler-pulley-replacement/ Fri, 01 May 2026 00:00:00 -0500 https://wesgould.github.io/blog/idler-pulley-replacement/ <!-- TODO: write up the idler pulley replacement story --> <p><strong>Tools and Supplies</strong></p> <table> <thead> <tr> <th>Item</th> <th>Notes</th> </tr> </thead> <tbody> <tr> <td>Replacement idler pulley</td> <td>~$37</td> </tr> <tr> <td>Replacement bolt and plate</td> <td>You can re-use your old bolt and plate but it was cheap to get new</td> </tr> <tr> <td>15mm wrench / socket</td> <td>For releasing the tensioner</td> </tr> <tr> <td>14mm wrench / socket</td> <td>For idler pulley bolt</td> </tr> <tr> <td>Torque wrench</td> <td></td> </tr> <tr> <td>2013–2019 Subaru Idler Pulley</td> <td>23770AA07A</td> </tr> <tr> <td>2013–2019 Subaru Idler Pulley Bolt</td> <td>23771AA04A</td> </tr> <tr> <td>2011–2024 Subaru Idler Pulley Cover</td> <td>23772AA050</td> </tr> </tbody> </table> <p><strong>Specs</strong></p>