Medium Duty - 325, 330, 335, 337, 340, 348, 535, 536, and 537 - Rear
325, 330, 335, 337, 340, 348, 535, 536, and 537 - Rear
325, 330, 335, 337, 340, 348, 535, 536, and 537 (1995-2022)
PACCAR (Peterbilt) designed suspension
This suspension was first used on the 535, 536, and 537 in 2022
The Reyco model 79KB was standard for all 1995-21 models and optional for 2022