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Kit Masters Part #91107 - Replacement for OEM Part #s: 791107, 981297, 981323, 991286
Kit Masters Part #91107 - Replacement for OEM Part #s: 791107, 981297, 981323, 991286

Detroit Diesel Fan Clutch

Kit Masters Part #

Rebuild with kit #: 9500HP

Kit Masters’ air-engaged remanufactured fan clutches combine superior materials and advanced innovations making them the easy choice for replacing Horton® HT/S®-style fan clutches.

3 Year/300,000 Mile Warranty



Premium Materials

Kit Masters’ HT/S-style remanufactured fan clutches feature vastly improved materials, compared to the OEM. Our Viton® o-rings withstand temperatures up to 400° and resist drying out. Dramatically stronger friction material sustains more fan clutch engagements and will not shear away from the backing plate.


Two Bearing Hub

The splined hub assembly in HT/S fan clutches must absorb the radial load from the fan belts and the axial load from the fan blade. Kit Masters’ dual bearing splined hub assembly transfers more of the load further down the fan clutch shaft to reduce wear on the front bearing. This equals extended fan clutch life.


Professionally Rebuilt Fan Clutches

Nobody knows how to rebuild a fan clutch like Kit Masters technicians. They tear down and rebuild thousands of fan clutches every year. These years of experience and our ‘better than OEM’ quality standards ensure that your professionally rebuilt fan clutch operates well beyond the 3-year/300,000 mile warranty.



Navistar / Detroit Diesel Series 60


Replaces OEM Part #:

791107, 981297, 981323, 991286,



+If I have a Horton® HT/S style fan clutch right now, can I use a GoldTop kit to rebuild it?

No, GoldTop kits only rebuild Horton® DriveMaster® style fan clutch assemblies. There may, however, be a newer style remanufactured fan clutch available that can replace your HT/S style fan clutch. Contact Kit Masters customer service to see if this is an option. You would also need to change out your solenoid valve with this conversion because the Horton® HT/S style fan clutches are –air-to-engage” and GoldTop fan clutches are –air-to-disengage.”

+Why is air leaking out of the hole on the front/pilot of my fan clutch?

The carbon material on your air cartridge is not mating correctly against the face seal that is threaded into the air chamber cap. Inspect the face seal and the carbon on the air cartridge. Look for any cracks or chips. Replace the air cartridge if needed.

+Why is air leaking out of the fuse port on the front of the friction plate?

There has been excessive heat from the friction plate wearing on the friction, causing the fuse to melt, creating an air leak. This is a preventative measure telling the truck owner that the truck needs to be serviced. Check your air supply pressure to make sure that there is a minimum of 90 psi, right at the entry point of the fan clutch. You can rebuild your fan clutch with a seal kit to replace the damaged seals and fuse once the air supply issue is fixed. You may choose to completely rebuild your fan clutch as well.


Hub Bearings Required

You are purchasing a Kysor-style fan clutch. When replacing a Kysor-style fan clutch, you must always replace the hub (pulley) bearings at the same time. Failure to do so will void the warranty on your fan clutch.

To determine the required bearing kit for your hub, enter the hub part number in the search field below, find the part number of the bearing kit you need on the dropdown below, or click on the 'Learn More' link below.

Choose Your bearing kit (if known)

I don't want to purchase a hub bearing kit at this time.
Failure to install new hub bearings with your clutch will void your warranty.

Core Return

This product includes a core charge. You may pre-pay for the freight to return your core during the checkout process, or ship using your own method. Core returns must be received by Kit Masters within 30 days of purchase.

Would you like to pre-pay for the return freight?

Yes, I want to pre-pay for Core Return Freight.


No, I do not want to pre-pay for Core Return Freight.