365, 367, 388, 389, 567, 579, and 578 - 12,000 to 14,600LB Axles
Vehicle Models and Years:
- 365 and 367: 2006-2022
- 388 and 389: 2006-2022
- 567: 2013-2022
- 579: 2012-2022
- 587: 2010-2018
Spring Specifications:
- Common Chassis: These springs are part of the Paccar (Kenworth and Peterbilt) common chassis.
- Axle Specifications: Suitable for 12,000 lb through 14,600 lb axles only; Standard axle position with a spring length of 27" x 32".
- Design Consistency: Springs in the same OEM number series are identical except for the bushing.
Eye Dimensions:
- Standard Eye Size: 1.75" eyes
- B81-6045 Series Eye Size: 2.08" eyes
Additional Springs with 2.08" Diameter Eye:
- RB-295 and RB-308: 7 1/2" Long
- RB-328 and RB-324: 6 11/16" Long
Durability Option:
- Threaded Bushings and Pins: Conversion to threaded bushings and pins is available for increased durability.
Part Replacement:
- With TB-77:
- Replace RB-295 with 327-540
- Replace RB-328 with 327-544
- With TB-81:
- Replace RB-308 with 327-540
- Replace RB-324 with 327-544