How to Replace Serpentine Belt
Learn how to replace serpentine belt with our detailed step-by-step guide. Follow our easy instructions to get it done right.
Your Progress
0 of 6 steps completedStep-by-Step Instructions
1 Step 1: Inspect Belt for Wear
Step 1: Inspect Belt for Wear
Check for cracks, fraying, glazing, or missing ribs indicating belt needs replacement.
Belt Wear Gauge
Tool for measuring belt wear and rib depth
2 Step 2: Locate Belt Routing Diagram
Step 2: Locate Belt Routing Diagram
Find diagram on radiator support or in manual showing how belt routes around pulleys.
Smartphone
Take photo of current belt routing before removal
3 Step 3: Release Belt Tensioner
Step 3: Release Belt Tensioner
Use wrench or serpentine belt tool to rotate tensioner, releasing tension on belt.
Serpentine Belt Tool
Lever tool for releasing belt tensioner easily
Breaker Bar
Long handle for rotating stubborn tensioners
4 Step 4: Remove Old Belt
Step 4: Remove Old Belt
With tension released, slip belt off one pulley, then remove completely from engine.
5 Step 5: Install New Belt Following Diagram
Step 5: Install New Belt Following Diagram
Route new belt around all pulleys per diagram, save tensioner pulley for last.
Serpentine Belt
Replacement belt for your vehicle engine
6 Step 6: Verify Proper Installation
Step 6: Verify Proper Installation
Check belt sits in all pulley grooves, start engine briefly, verify no squealing or slipping.