Part-number relationships
| Relationship | Reference family | Number |
|---|---|---|
| Primary Equipment Part Number | Cat formatted reference | 328-4374 |
| Compact Search Alias | Same Cat number without separator | 3284374 |
Excavator Hydraulic Spare Parts
328-4374 345 mm Transmission Clutch Friction Disc for Cat D6R D7R
3 product photos · Swipe on mobile, or hover and select a thumbnail.
OEM / reference328-4374
Specification345 mm Transmission Clutch Friction Disc
Catalog ID85818808
328-4374 is a 345 mm outside-diameter clutch friction disc used in Caterpillar transmission planetary groups. Caterpillar publishes approximately 271 mm inside diameter and 5.59 mm thickness, with applications across D6/D7/D8 tractors, 966/972/980 loaders and related equipment families. Confirm machine serial, transmission arrangement, disc diameter, thickness, tooth or tang layout and friction lining before ordering.
- Product Type
- Transmission clutch friction disc
- Outside Diameter
- 345 mm / 13.5827 in published
- Inside Diameter
- Approximately 271 mm / 10.67 in published
- Thickness
- Approximately 5.59 mm / 0.22 in published
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
Product fitment guide
Part numbers and compatible models
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Reference numbers
Primary number
Formatting alias
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
345 mm Transmission Clutch Friction Disc
- Category
- Excavator Hydraulic Spare Parts
- Catalog ID
- 85818808
- Photo views
- 3
Before ordering
Confirm these details
- Match the complete part number on the original component.
- Compare connectors, mounting points and visible dimensions with the product photos.
- Confirm the exact machine or engine model and serial range before ordering.
Machine fitment
Compatible model references
3 model references
Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.
Quick fitment answers
Common questions about 328-4374
Which machines use 328-4374?
Recorded compatible model references include Track-type tractor families: Cat D6H / D6R / D6T / D7R / D8R / D8T, Loader families: Cat 966 / 972 / 980 and manufacturer-listed equipment, Fitment limitation: Confirm serial, transmission, dimensions, tooth/tang layout and lining. Confirm the complete part number and machine serial range before ordering.
What numbers are documented for 328-4374?
Formatting aliases for the same number: 3284374.
How do I confirm 328-4374 before ordering?
Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with the product photos. Confirm the exact machine or engine model and serial range before ordering. Send clear photos of the original unit and connector layout when requesting a quote.
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