Trunnion 338‑1845 – 4" Shaft × 4" Spring – Fits Mack Rear Heavy‑Duty Suspension freight

Trunnion 338‑1845 – 4" Shaft × 4" Spring – Fits Mack Rear Heavy‑Duty Suspension freightThe 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

6813281626

This wear pad reduces metal-on-metal contact

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

it minimizes vibration

The Mack Trunnion Saddle with 4" shaft and 5" spring support is a critical heavy-duty suspension component used in Mack SS58 Camelback rear axle systems

Dayton 327-525

OEM Cross References:330-364A

and International

S3500004001

34013-188L

Constructed from durable steel and equipped with adjustable end fittings

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