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12558275 - 8.1L Exhaust Manifold Gasket

On SALE! 12558275 - 8.1L Exhaust Manifold Gasket


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# 12558275



  • Brand New Workhorse Exhaust Manifold Gasket for 8.1L Engines in Workhorse Chassis.


  • All Workhorse Chassis Equipt with an 8.1L Engine


will this fit left or right side of the engine? ( Kaiser Ford, 08/18/2021 )
Yes, these are the same for both sides. If you are installing a Banks TorqueTube header set, you will not need gaskets. ( Support )
Is this price for one gasket or two gaskets. ( Mario Maraldo, 11/10/2020 )
These are sold individually.  ( Support )
Is this gasket equal or better then OEM? ( Fritz Nueesch, 11/03/2020 )
It is the OEM gasket so it would be equal :) ( Support )
Will these gaskets fit Product Code: 12558275. Making sure before we order ( Brad Buchanan, 07/19/2020 )
Yes, these are the correct gaskets for both sides on the 8.1L. ( Support )
I have a workhorse w22 2002 and want to know if you have exhaust manifolds for an 8.1 .
do you have them and how fast can I have them .
znd of course a price both sides
( george clawson, 07/17/2019 )
Before placing an order, we would want your VIN to verify the part #'s. We would recommend upgrading to the Banks TorqueTube Headers, as they are better quality and are actually less expensive. The kit part # is 49504: https://www.ultrarvproducts.com/49504-Banks-Power-Torquetubes-Workhorse-W-series-01-03   It is $1269.45 and free shipping. ( Support )

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 The state of California requires that this warning be posted for people purchasing products that reside in California.

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 www.P65Warnings.ca.gov

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: 107076
  • Brand: Workhorse
  • Product Code: 12558275
  • Availability: 7
  • $50.85
  • $88.24

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