We use cookies and similar web technologies to recognize your repeat website visits and preferences and to analyze traffic. To learn more about cookies, including steps for disabling, view our Privacy Policy. By clicking “I Accept” on this banner you consent to the use of cookies unless you disable them.

Skip to Main Content
Horton Website Site Feedback Legacy CatalogContact

Search Part or VIN

Find the right part for your customer's vehicle.

DriveMaster: 999331

Horton Service # 999331 Horton OEM # 989331
Clutch Type: DriveMaster

Repair Kits

Repair Kit Options

Part Components

View Full List of Components

Standard Parts List

Item Description Qty Comments
1 JOURNAL BRACKET 1
2* SHEAVE BEARINGS 1 OR 2
3 SHEAVE 1
4* BEARING NUT 1
5 AIR CHAMBER CAP 1
6* O-RING SEAL 1
9* FAN MOUNTING DISC/STUDS 1
17* BUTTON HEAD SCREWS 8
18* AIR CHAMBER SEAL 1
20* FACE SEAL 1
22* RETAINING RING 1
23* AIR CARTRIDGE ASSEMBLY 1
24* RETAINING RING 1
28* FRICTION LINER 1
44 BEARING SPACER 1
50* CLUTCH PACK - SPRING HOUSING/PISTON 1
55* CAGE NUT (USED FOR REPAIRS ONLY) 1
Item 1 Item 3 CLUTCH PACK KIT DMA CONVERSION BEARING KIT (DM Only) DMA CONVERSION SUPER KIT(DM Only) DMA TWO-SPEED CONVERSION SUPER KIT FRICTION DISC KIT FRICTION LINER KIT POLARFORCE KIT SEAL KIT
Service #
999331
OEM #
989331
17661 17660 1S-DP-CP 995574 1S-DP 2S-DP 994348 994349 2S-DP-CP 994346
For fitting replacement, order part #4758.

Notes

For fitting replacement, order part #4758.

All about remans

Learn how remanufactured fan clutches can save on cost, time and complexity

Learn More

How fan clutches impact performance

Watch: It's easy to overlook, but a truck's fan clutch can make a world of difference

Learn More

Video library

Check out a full library of videos, from overall engine cooling information to specific repair jobs

Learn More