AL‑KO M16 Zinc‑Plated Greaseable Shackle Bolt – Outback & Roller‑Rocker (P/N 590632ZN)

Overview

Upgrade your trailer’s suspension with the AL‑KO M16 Zinc‑Plated Greaseable Shackle Bolt (P/N 590632ZN). Designed for durability, this genuine OEM bolt features knurling for secure fitment, a grease nipple for maintenance accessibility, and a protective zinc plating to resist corrosion.

Key Features

• OEM AL‑KO quality ensures reliable performance and precise fitment.

• M16 × 100 mm design with grease nipple for easy lubrication during servicing 

• Knurled shank prevents bolt rotation within the shackle plate, preserving structural integrity 

• Zinc-plated finish provides added resistance to rust in harsh or humid conditions 

• Versatile compatibility with both Outback and Roller‑Rocker spring systems—ideal for AL‑KO suspension setups 

Technical Specifications

• Diameter: M16

• Length: Approximately 100 mm (shaft + thread)

• Finish: Zinc-plated with integrated grease nipple

• Part Number: 590632ZN

Installation Tip

When installing, leave a 0.5 mm gap between the shackle plates and spring eye to avoid unnecessary noise and allow proper articulation—a small detail that enhances suspension longevity

Benefits

• Fast shipping across Australia—most orders dispatched next business day from QLD 

• 12‑month manufacturer warranty provides peace of mind and trust in quality