How to Replace Serpentine Belt

6 steps 30 min Intermediate

Learn how to replace serpentine belt with our detailed step-by-step guide. Follow our easy instructions to get it done right.

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Step-by-Step Instructions

1

Step 1: Inspect Belt for Wear

Check for cracks, fraying, glazing, or missing ribs indicating belt needs replacement.

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Belt Wear Gauge

Tool for measuring belt wear and rib depth

$11.99
2

Step 2: Locate Belt Routing Diagram

Find diagram on radiator support or in manual showing how belt routes around pulleys.

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Smartphone

Take photo of current belt routing before removal

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3

Step 3: Release Belt Tensioner

Use wrench or serpentine belt tool to rotate tensioner, releasing tension on belt.

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Serpentine Belt Tool

Lever tool for releasing belt tensioner easily

$19.99
Breaker Bar

Long handle for rotating stubborn tensioners

$24.99
4

Step 4: Remove Old Belt

With tension released, slip belt off one pulley, then remove completely from engine.

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5

Step 5: Install New Belt Following Diagram

Route new belt around all pulleys per diagram, save tensioner pulley for last.

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Serpentine Belt

Replacement belt for your vehicle engine

$24.99
6

Step 6: Verify Proper Installation

Check belt sits in all pulley grooves, start engine briefly, verify no squealing or slipping.

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