12558968 - 8.1l Waterpump Bypass Hose

On SALE!

Click Image for Gallery

PLEASE READ!!!

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# 12558968

Description:

Brand New Workhorse Waterpump (thermostat) Bypass Hose for 8.1L Engines in Workhorse Chassis.

Applications:

All Workhorse Chassis Equipt with an 8.1L Engine

What is the part number of the coolant crossover for the 8.1L 2004 p32 ( John, 02/15/2018 )

The part number for the crossover pipe was 12560724. Unfortunately that part is no longer available. ( Support )

Is the 8.1l water pump Bypass Hose used to bypass the heater? In other words does the hose eliminate the hose going to and coming from the heater core? Thanks for you help. Dave

( dave, 05/15/2015 )

Dave,

No, that is not what the waterpump bypass hose is for. Here is a description of it's purpose that I found on Hot Rod Magazines website:

All engines that run a thermostat need to have some type of bypass provision to avoid localized hot spots, minimize the chance of steam pockets developing, promote even and rapid warm-up, and prevent water-pump cavitation. On some engines, such as classic Chevy small-blocks, the bypass is internal; on others, such as your big-block Chevy, the bypass is external.

( Support )

Ask a question

Your Name

VIN...(This is helpful):

Your Question

Note: HTML is not translated!

WARNING PROP65 - see details above 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: 123672
Brand: Workhorse
Product Code: 12558968
Availability: 8

$49.79
$37.08

Available Options

Have us Manually Verify Part by VIN Before Shipping

VIN Number

Qty

Add to Wish List Compare this Product

0 reviews / Write a review

12558968 - 8.1l Waterpump Bypass Hose

PLEASE READ!!!

Ask a question

Write a review

VIN Verification Service Item

Shipping Insurance Notice

Available Options

12592020 - 8.1l Water Pump Gasket

15020684 - Workhorse Upper Radiator Hose P32 8.1l

15958027 - Lower Radiator Hose P32

W0000218 - Radiator Inlet Hose (Upper)

W0000219 - Radiator Outlet Hose (lower)

W8800783 - Workhorse 8.1L/7.4L Engine Coolant Thermostat w/ Seal

W8000530R - 8.1L Water Pump (Reman)