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How To Replace A Serpentine Belt In A Mustang

Easily switch out an old squealing or slipping serpentine belt in your Mustang with a brand new belt with this quick and easy installation article.

Viewing this install and using the information shared is subject to the terms set forth here - View the LMR Install Instructions Disclaimer.

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When your Mustang's serpentine belt starts to squeak and squeal, it may be time to swap out your serpentine belt. Late Model Restoration makes this installation quick and easy with this Mustang drive belt installation article.

The serpentine drive belt's job is to turn all the accessories in relation to the engine's crank pulley. This belt turns the power steering pump, small pump & A/C compressor if equipped, water pump, and alternator. So needless to say it's fairly important. This job doesn't require many tools and we have these listed below:

Tools Required

  • Breaker Bar
  • Socket Set

Mustang Serpentine Belt Replacement Instructions

  1. Pop the hood and locate the belt tensioner.

  2. Ford Mustang Belt Replacement Install

  3. Determine what size socket or drive you will need to release pressure from the tensioner. Place the socket/drive onto the tensioner and turn counter clockwise.

  4. Ford Mustang Belt Replacement Install

  5. While keeping tension off the belt, remove the serpentine belt from the engine bay and allow the tensioner to go back to its original position.

  6. Ford Mustang Belt Replacement Install

  7. Check under your hood for your belt routing diagram to verify the correct belt route.

  8. Ford Mustang Belt Replacement Install

  9. Route the belt according to your setup, push the tensioner down with the breaker bar, and release to put tension onto the new belt. Check for any misalignment and adjust as necessary and you are done!

  10. Ford Mustang Belt Replacement Install

About the Video

How To Change Mustang Serpentine Belt - LMR Basics

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

Published on 2016-12-05
In this installment of LMR Basics, check out the very simple steps required to change your serpentine drive belt. The serpentine drive belt’s job is to turn all of the accessories in relation to the engine’s crank pulley.

Shop LMR.com for the best selection of accessory drive parts for your Mustang.
What’s up everybody? Landan here with Late Model Restoration. In this installment of LMR Basics, I’m going to be showing you the very easy steps in regards to changing your serpentine drive belt, and will be doing the work on this ’92 coupe.

The serpentine drive belt’s job is to turn all of the accessories in relation to the engine’s crank pulley. This belt turns the power steering pump, smog pump if equipped, A/C compressor, water pump and alternator. So, needless to say; it’s fairly important.

This job doesn’t require many tools at all. If you know the correct belt length already for your car; you simply need a break over bar and an 18mm socket.

Now, for some reason you don’t know the correct belt length, access the video in the description or the card in the upper right hand corner on your screen. This will mainly benefit those of you that have an A/C delete, power steering delete, or other custom application.

To begin, pop the hood and locate the belt tensioner.

Position the 18mm socket over the bolt on the tensioner pulley. Do your best to position the break over bar at the twelve o clock position.

Now, rotate the bar counter-clockwise until you can release the old belt from one of the pulleys. The general rule of the thumb is to simply slide it off of the top most pulley. In this case, it’s the A/C compressor.

Once you have some slack, remove the old belt from the car.

Position the new belt in the same orientation that your original belt was.

Be sure and check the engine decal for proper belt routing located on the top of the core support.

If you’re decal is missing, check out our selection of under hood factory style decals for your application.

Since this one is a little tough film because of the tight areas, check out this helpful infographic we put together.

It covers factory setups and other popular delete setups.

Once the belt is orientated in the right direction, rotate the tensioner counter-clockwise and slide it onto the tensioner pulley.

Double check and make sure all of the ribs on the belt are properly seated on the pulleys.

That completes a successful serpentine belt change.

Alright guys, this one is super easy and should take you no more than fifteen minutes to complete. While you’re replacing your belt, be sure and check other common wear items in the area. Such as the belt tensioner, fan clutch, and other key belt accessory drive components.

Until next time fellas, take this time to subscribe to our YouTube channel if you haven’t already done so. Be sure and check out are wide selection of accessory drive parts at LMR.com!