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W0000581 - Workhorse W-Series 8.1L Serpentine Drive Belt

W0000581 - Workhorse W-Series 8.1L Serpentine Drive Belt


Order Shipment Notice: 

Most orders are shipped within 24 hours from the order date. Orders placed on the weekend or after cutoff on Friday, and orders placed on select holidays are processed on the next business day. Please see our shipping terms for more information.

Part# W0000581


  • W-Series Workhorse Chassis Equipt with an 8.1L V8 Engine (108")
Is the W000581 the correct belt d
For a 2005 Chevy Workhorse.
Thank you
( Mike Sanchez, 08/27/2023 )
Yes, this is the correct belt for your 2005 W22 ( Support )
I this the factory belt? ( Josh B Coxsey, 07/16/2023 )
Yes, this is a factory replacement belt. ( Support )
how long is the belt? i put a belt on that was 108 3/4 long and the belt would squeal when the A/C was off.
( michael Rush, 06/26/2023 )
This belt is 108" long, it sounds like maybe the one you installed is just a tad too long. ( Support )
I need a new Serpentine Belt for 2004 Winnebago Sunrise.
Will the W0000581 be the correct one?
( Carolyn, 04/20/2023 )
Hi Carolyn, can you provide the Workhorse V.I.N. ?  It should begin with "5B4" and has 17 digits .  The # provided may be a Winnebago serial #  ?  ( Support )
Will the W0000581 belt fit my motorhome?
Can I pick it up in lieu of shipping it?
Is it in stock?
( Wayne Hoppen, 05/19/2022 )

Hi Wayne,

Yes, that is the correct belt assigned to the VIN# you provided.

Come on down - We have 7 in stock here.

( Support )
Will this fit my motorhome? Thank you ( Jack, 10/13/2021 )
Yes, that is correct for your motorhome.  ( Support )
2002 Damon Intruder 350. W22 chassis with 8.1 Chevy V8. I've been told this belt is the correct one, is it? Also, any additional info on how to remove/replace it as there is only access from under the engine.

Thank you.
( Eric, 01/19/2021 )
This is the correct belt for your W22. To replace, install a 3/8" drive ratchet into the belt tensioner and rotate the arm to release tension and slip the belt off. For installation, route the belt over all the pulleys expect the tensioner arm pulley. Using the 3/8" drive ratchet, relieve tension on the tensioner and slip the belt back over that pulley and slowly release the tension. Attached is a diagram of the belt routing:  ( Support )
Will this fit my 2006 Fleetwood Storm on Workhorse W-(20 or 22) chassis? ( Diego, 11/22/2020 )
Yes, it will fit. ( Support )
We are buying a 2010 Newmar Canyon Star 3410 with the Workhorse 8.1L engine (sorry, I don't have the VIN yet). Do you offer "how to" videos for replacing parts on this motorhome engine to go with the purchased parts?

( CG Phillips, 08/30/2020 )
We have videos of some repairs but a really good resource for how-to videos is our friend's YouTube channel: ( Support )
2008 W24 workhorse chassis with 8.1L what is the torque for installing the belt tensioner
( Kenneth A Rassler, 07/28/2020 )
Kenneth, If you have an 8.1L the belt tensioner bolt torque is 37 ft. lbs. . If not please provide the last 8 of the VIN. ( support )
How can you lock the tensioner to replace the alternator?
8.1 chevy vortex

( Cindy McCollough, 05/21/2020 )
No, it has to be held in place manually while removing/installing the belt. ( Support )
Will this fit my 2005 Winnebago Adventurer? ( Joe Gangemi, 05/19/2020 )
Yes, this will fit your 2005 W24 chassis. ( Support )

( Jack Colody, 05/04/2020 )


    Yes, your VIN calls for the W0000581 belt. I highly recommend replacing the belt tensioner anytime you replace the belt. Here is a link for that part as well if you choose to do so

( Support )
What is the length of W0000581? ( paul, 02/09/2020 )
The length is 108" ( Support )
Is Woooo581 for 105amp or 150 amp alternator? ( paul, 02/09/2020 )
Your alternator is 145 amp. ( Support )
Will this belt fit my 34 ft 2007 tiffan allegro open road class A motor home? ( Mark Carnemella, 03/02/2019 )
Yes it will.  ( Support )
will this belt work on my 2006 adventurer 33V ( skipper, 06/09/2018 )
Yes that is a W22 VIN which that belt fits all model years of. ( Support )
Just checking to see if this is the correct belt for my 2003 Fleetwood Bounder. 454 Chevy ( Gene, 01/17/2018 )
Not answered yet.
Need part number for serpentine belt 8.1 Workhorse V8 ( Jeremy thomas, 03/31/2017 )

Hi Jeremy,

The W0000581 belt is the correct one for your VIN. It is the belt used on all W-Series motor homes.

( Support )
Hello I would like to know if you guys have the engine belt for this RV . 2002 Itasca Suncruiser 35U GM Workhorse ( Noslen , 08/20/2016 )


        The W0000581 would be the correct belt for your coach.

( Alan )

Instruction on how to install

( Judy smitherman, 09/14/2015 )


In the pictures of this product it shows the belt routing, however, if you want detailed description on replacement you will want to download the Engine Service Manual for the appropriate year and model of your chassis. You can find those manuals by clicking here: Workhorse Service Manuals

( Support )

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WARNING: Products may contain one or more chemicals known in the State of California to cause cancer and/or birth defects or other reproductive harm. For more information, visit

VIN Verification Service Item

This product allows for a VIN verification service.

  • VIN part verificaion is a service that we provide free of charge when a part is purchased.
  • When you provide your VIN below we will personally verify your part selection by your VIN before shipment of your order.
  • This helps ensure that this is the correct part for your vehicle.
  • This is not an automatic VIN check, it is done by a parts specialist once order is placed.
  • We can only VIN verify vehicles back to model year 1996, if older we can help but can't guarantee fitment.
  • If you would like to have your part selection verified before purchase please call or email us.

Shipping Insurance Notice

NOTICE: For orders outside of United States

If you are placing an order to ship outside the United States, Shipping Insurance will be required and added automatically at checkout.


  • Views: 135594
  • Brand: Workhorse
  • Product Code: W0000581
  • Availability: 113
  • $88.17
  • $65.00

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