The Fortpro 3166 Heavy-Duty Trailer Brake Drum is engineered as a direct replacement for 3166 OEM assemblies, servicing 16.50 in. x 7.00 in. drum brake systems on commercial trailers and heavy vehicles. Designed specifically for use on aluminum hubs with outboard disc wheels, this cast iron drum features an 8.53 in. pilot diameter, 11.25 in. bolt circle diameter, 10 bolt holes (0.81 in. dia.), and a 22,500 lbs axle capacity to deliver optimal thermal efficiency and safe stopping control.
Fortpro is a trusted leader in the development and manufacturing of premium-quality truck parts designed to meet the demands of semi-trucks and heavy-duty trucks. Renowned for innovation, durability, and reliability, Fortpro products are engineered to enhance performance, safety, and efficiency across a wide range of trucking applications.
Whether you're seeking OEM replacement parts or upgrades, Fortpro provides a diverse selection of components backed by a global reputation for quality and innovation. Trust Fortpro for the parts you need to keep your vehicles on the road longer and stronger.
Basic Part Information4 attributes
| Product Line | Brakes |
|---|---|
| Category Name | Brake Drums |
| Part Type | Brake Drum |
| OEM Part Number | 3166 |
Application/Fitment Attributes7 attributes
| Application Type | Heavy Duty Trucks, Semi-Trucks |
|---|---|
| Bolt Circle Diameter (BCD) | 11.25 in. |
| Bolt Hole Diameter | 0.81 in. |
| Bolt Hole Quantity | 10 |
| Mounting Type | Outboard |
| Pilot Diameter | 8.53 in. |
| Wheel Type | Disc |
Dimensional/Physical Attributes4 attributes
| Brake Diameter (I.D.) | 16.50 in. |
|---|---|
| Brake Size (Dia x Width) | 16.50 in. x 7 in. |
| Brake Shoe Width | 7 in. |
| Brake Surface Width | 7.63 in. |
Technical/Performance Attributes2 attributes
| Axle Rating (Capacity) | 22.500 lb. |
|---|---|
| Mounting Flange Thickness | 0.44 in. |
Technical Notes
- Gunite: 3166
- KIC: 5287801
- Mack: 3398-3166
- Meritor: 3122978002