Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.

Kit Masters · Cooling System
91027-KM
In stock · ships from Knoxville
This is a remanufactured air-engaged fan clutch assembly for certain Caterpillar engines.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 10 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Caterpillar
Freightliner
Western Star
Caterpillar
Freightliner
Western Star
Applications verified from multiple aftermarket listings matching Kit Masters part 91027. Fits Caterpillar 3406 and 3176 engine applications in various truck makes listed. Always confirm by cross-referencing your old OEM part number before ordering.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 16 of 30.
Different year, make, or config? Get a confirmation against your truck in under a minute.
The fan clutch controls the engine cooling fan, engaging it when the engine needs extra cooling and disengaging it to save fuel and reduce noise when cooling isn't required. You'd replace this unit if the fan isn't engaging or disengaging properly, you hear excessive bearing noise, or the hub has developed excessive play. It's built as a direct bolt-on replacement for Horton HT/S-style fan clutches and comes with a two-bearing hub design.
Part Number: 91027-KM
FAN CLUTCH ASSEMBLY
Vendor: Kit Masters Inc.
Dealer: KP Services Crossville
Compatibility, alternatives, and more