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 Information5 attributes
| Product Line | Brakes |
|---|---|
| Category Name | Slack Adjusters |
| Part Type | Manual Slack Adjuster |
| Model | Bendix Style / PL-20 |
| OEM Part Number | 278326 |
Application/Fitment Attributes3 attributes
| Application Type | Heavy Duty Trucks, Semi-Trucks |
|---|---|
| Compatible Brake Chamber Sizes | T-16, T-20, T-24 |
| Clevis Type | Straight |
Dimensional/Physical Attributes9 attributes
| Material | Alloy Steel |
|---|---|
| Arm Bushing Inside Diameter | 1/2 in. |
| Arm Length Position 1 | 6-1/2 in. |
| Arm Length Position 2 | 5-1/2 in. |
| Arm Offset | No Offset |
| Body Inclination Angle | 0 deg. |
| Clevis Thread Diameter | 5/8-18 UNF-2B |
| Slack Spline Count | 10 |
| Slack Spline Diameter | 1-1/2 in. |
Technical/Performance Attributes5 attributes
| Maximum Operating Temperature | 158 deg. F (70 deg. C) |
|---|---|
| Maximum Torque | 26.000 In./Lbs. |
| Minimum Operating Temperature | (-40 deg. F) (-40 deg. C) |
| Operation Type | Tension Adjuster - Torque |
| Positive Lock Feature | Yes |
- Bendix: 278326
- BWP: M457
- Dayton Parts: M1064, M457
- Euclid: E-940S, E-940S-BK
- Haldex: KN47011
- Meritor: R824001
