Advance Lower Kingpin Cap

Advance Lower Kingpin Cap

This is a genuine Terex replacement lower kingpin cap, part number 20486, for the front steer axle on Advance front discharge concrete mixers. Manufactured by Meritor, this cap fits the RF-21 model steer axle, which has a 21,000 lb Gross Axle Weight Rating (GAWR). The cap bolts to the bottom of the steering knuckle, sealing the lower kingpin assembly to retain grease and prevent contamination, which is essential for maintaining steering performance and component longevity. This part is a critical replacement during routine axle maintenance or when the original cap is damaged or lost.

Key Features

• Direct replacement for Terex OEM part number 20486.
• Designed for Meritor RF-21 front steer axles.
• Protects lower kingpin bearings from contamination.
• Ensures proper lubrication retention within the knuckle assembly.
• Mounts to the bottom of the steering knuckle.

Fits These Mixers

Terex, Terex Advance, Oshkosh. Specifically fits Terex Advance front discharge mixers equipped with Meritor RF-21 front steer axles.

Product descriptions are drafted with automated tools and reviewed as time allows. While we work to keep them accurate, specifications and fitment should be confirmed with a Customer Service specialist at 800-745-3414 before purchase. Found an error? Let us know and we’ll fix it.