Multiquip 18051RS Urethane Spider

The Multiquip 18051RS Urethane Spider is a genuine OEM replacement designed for Whiteman hydraulic power buggy models including WBH21EPA, WBH-16, WBH-16E, WBH-16F, WBH-16EF, WBH-16EAWD, WBH-16EAWDF, WBH-21EFP, and WBH-21EF. Sourced directly from Multiquip, this part carries the same specifications as the original component installed at the factory. If your buggy is showing signs of drivetrain vibration, rough power transfer, or visible wear on the coupling assembly, the 18051RS is the correct replacement to restore smooth operation. DHS Equipment stocks this genuine OEM part and can help confirm fitment for your specific machine.

Key Features

• Urethane Construction — Flexible urethane material absorbs drivetrain shock and torsional load, maintaining smooth power transfer through the coupling assembly.
• Genuine OEM Quality — Manufactured to Multiquip's original material and dimensional specifications, ensuring the spider seats and compresses correctly within the coupling halves.
• Broad WBH Series Fitment — Confirmed fit across WBH-16, WBH-16E, WBH-16F, WBH-16EF, WBH-16EAWD, WBH-16EAWDF, WBH21EPA, WBH-21EFP, and WBH-21EF power buggies.
• Drop-In Replacement — Matches the original spider profile and lobe count, so it installs directly between existing coupling hubs without modification to surrounding components.
• Restores Drivetrain Smoothness — A worn or cracked spider causes vibration, clunking, and uneven power delivery; replacing it promptly protects the coupling hubs from accelerated wear.

The urethane spider is the flexible intermediate element in a jaw-type or spider coupling — it sits between two interlocking metal hubs and transmits rotational force while cushioning shock loads and minor misalignment. In a power buggy application, this component absorbs the torque spikes that occur during loading, dumping, and driving over rough terrain, preventing that energy from hammering directly into the drivetrain. When the spider wears, cracks, or breaks apart, the metal coupling hubs begin to contact each other directly, producing audible clunking and accelerating damage to shafts, bearings, and other drivetrain components.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.