Trunnion 338‑1845 – 4" Shaft × 4" Spring – Fits Mack Rear Heavy‑Duty Suspension freight Key Features:• Application: Peterbilt leaf

Key Features:• Application: Peterbilt leaf spring suspension systems• Function: Anchors spring eye bushings and maintains axle alignment• Precision-machined cast steel for high durability• Supports consistent axle positioning under heavy loads• Direct replacement for multiple OEM part numbers

This wear pad reduces metal-on-metal contact

6813281626

Dayton 327-525

Engineered from high-strength steel and precision-formed for a secure fit

Trunnion 338‑1845 – 4" Shaft × 4" Spring – Fits Mack Rear Heavy‑Duty Suspension freight Key Features:• Application: Peterbilt leafThe Mack Rear Trunnion Assembly (4 diameter) is a heavy duty suspension component designed to support the rear spring beam and manage articulation in tandem axle configurations. This complete assembly is engineered to OEM standards for strength, durability, and longevity in severe duty vocational and fleet applications. OEM Cross References: 3381845, 131604L, M1117, 39QK325, 39QK325M, R303645 Key Features: Application: Mack tandem axle rear suspension