Silent Block Bushing RB‑388 – Fits Kenworth Trucks Heavy‑Duty Suspension The 327-331 Threaded Spring Pin

The 327-331 Threaded Spring Pin is a precision-engineered suspension component designed for use in Mack RB

Peterbilt & International trucks• Designed for FASII Airliner

Key Features:• Fits Peterbilt trucks with rear Air Leaf suspension• Includes bolts

Key Features:• Compatible with multiple Freightliner truck models• Threaded design for secure spring pin fitment• Enhances alignment and reduces suspension wear• Manufactured from durable

It ensures accurate axle alignment and consistent suspension movement while reducing wear and extending component life

Silent Block Bushing RB‑388 – Fits Kenworth Trucks Heavy‑Duty Suspension The 327-331 Threaded Spring PinThe Silent Block Bushing is designed for use in heavy duty Kenworth truck suspension systems, specifically as a replacement for the M1825 application. It reduces noise and vibration by isolating metal to metal contact between suspension components. Engineered with a high quality rubber core bonded to a steel outer shell, it ensures long lasting performance under heavy loads and demanding conditions. OEM Cross References: M1825, RB338, MR599, 52730,