Mack Trunnion Saddle – 4" Shaft, 5" Spring – Fits SS58 Camelback Suspension It is an OEM-quality replacement

It is an OEM-quality replacement compatible with multiple part numbers

Compatible with medium and heavy-duty International models

Z-Beam suspensions• Reduces vibration and wear• Durable rubber construction• Direct OEM replacement

Equipped with premium TS38000 polyurethane bushings

Peterbilt & International trucks• Designed for FASII Airliner

Mack Trunnion Saddle – 4" Shaft, 5" Spring – Fits SS58 Camelback Suspension It is an OEM-quality replacementThe 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. Also known as a Trunnion Seat, this part is engineered to hold the trunnion shaft firmly in place while allowing for controlled articulation and weight distribution. Built for high load environments, this saddle improves stability and extends the life of your suspension system. OEM Cross References: